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#1
June 22nd 05, 11:02 AM
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Problem about Window Xp SP2 firewall and the buildin FTP command
Dear Tom,
Sorry for so late to response to your reply on the newsgroup. I checked the firewall log, that the firewall drop several TCP SYN packets that may cause the FTP hand problem (seems waiting for server to connect to client for file transfer). Could you please give me your email address that i can send the screen capture, firewall log, etc to you. BTW, I always test the XP SP2 on both my own FTP server, production FTP server(both IIS 5.0, window 2000 server, service pack 4, with max. connections = 100, 000) and FTP server on IBM AIX. The problem occurs when firewall is turned on. The site: ftp2.de.nero.com is a reference site only that my FTP site is located within my company's intranet that can't let you try to connect for testing. Sorry for confusing you. I think this situation do not happen on individual PC due to wrong config. or installation problem, since i have also tested 3 new PCs, preinstalled with XP SP2 (2 HP, 1 IBM), the same problem occurs. Thank you for your kind attention. 
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#2
June 22nd 05, 11:49 AM
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No idea what you are talking about as you deleted all previous text. It =
sounds like you need passive FTP. Normal FTP both client and server = computers are servers AND clients. One with the data (the server) and = one with the control channel (the client). Clients connect to servers. In FTP both computers connect to the other. = Passive is client to server computers only. --=20 -------------------------------------------------------------------------= ------------------------- http://webdiary.smh.com.au/archives/...nt/001075.html =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D "ping" wrote in message = ups.com... Dear Tom, =20 Sorry for so late to response to your reply on the newsgroup. =20 I checked the firewall log, that the firewall drop several TCP SYN packets that may cause the FTP hand problem (seems waiting for server to connect to client for file transfer). =20 Could you please give me your email address that i can send the screen capture, firewall log, etc to you. =20 BTW, I always test the XP SP2 on both my own FTP server, production FTP server(both IIS 5.0, window 2000 server, service pack 4, with max. connections =3D 100, 000) and FTP server on IBM AIX. The problem occurs when firewall is turned on. =20 The site: ftp2.de.nero.com is a reference site only that my FTP site is located within my company's intranet that can't let you try to connect for testing. Sorry for confusing you. =20 I think this situation do not happen on individual PC due to wrong config. or installation problem, since i have also tested 3 new PCs, preinstalled with XP SP2 (2 HP, 1 IBM), the same problem occurs. =20 Thank you for your kind attention.
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#3
June 23rd 05, 02:47 PM
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David,
Below are all the previous text.. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Problem about Window Xp SP2 firewall and the buildin FTP command All 10 messages in topic - view as tree msnews.microsoft.com Jun 5, 12:15 am show options Newsgroups: microsoft.public.windowsxp.general From: "msnews.microsoft.com" - Find messages by this author Date: Sun, 5 Jun 2005 00:15:17 +0800 Local: Sun,Jun 5 2005 12:15 am Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse Hi, I find a problem that if running multiple FTP command at the same time, the FTP will get hang when issuing the get command if the buildin firewall in on (already add ftp.exe program to the exception list). Steps to reproduce the problem: 1=2E open multiple DOS shell(cmd.exe) (say 5) 2=2E on each DOS shell, type ftp -s:abc.txt (where abc is a file that contain ftp command to get several files) but don't press enter. 3=2E press enter to run the ftp commands, one by one quickly at same time. 4=2E the problem will occur that after issuing the get command, the ftp hang!! Is it that the buildin firewall can't handle too many connection at the same time? I check the event log, no strange or useful event generated. Can anybody tell how can i solve it? (as one of my program will execute ftp.exe many time at the same time!) Reply Carey Frisch [MVP] Jun 5, 12:32 am show options Newsgroups: microsoft.public.windowsxp.general From: "Carey Frisch [MVP]" - Find messages by this author Date: Sat, 4 Jun 2005 11:32:49 -0500 Local: Sun,Jun 5 2005 12:32 am Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse Windows XP SP2 to limit Max Connections/sec http://www.msfn.org/print.php?id=3D9017 -- Carey Frisch Microsoft MVP Windows XP - Shell/User Microsoft Newsgroups Get Windows XP Service Pack 2 with Advanced Security Technologies: http://www.microsoft.com/athome/secu...xp/choose.mspx ---------------------------------------------------------------------------= ---------------- "msnews.microsoft.com" wrote: | - Hide quoted text - - Show quoted text - Hi, | I find a problem that if running multiple FTP command at the same time, | the FTP will get hang | when issuing the get command if the buildin firewall in on (already add | ftp.exe program to the exception list). | | Steps to reproduce the problem: | 1. open multiple DOS shell(cmd.exe) (say 5) | 2. on each DOS shell, type ftp -s:abc.txt (where abc is a file that contain | ftp command to get several files) but don't press enter. | 3. press enter to run the ftp commands, one by one quickly at same time. | 4. the problem will occur that after issuing the get command, the ftp hang!! | | Is it that the buildin firewall can't handle too many connection at the same | time? | I check the event log, no strange or useful event generated. | | Can anybody tell how can i solve it? | (as one of my program will execute ftp.exe many time at the same time !) Reply Detlev Dreyer Jun 5, 12:50 am show options Newsgroups: microsoft.public.windowsxp.general From: "Detlev Dreyer" - Find messages by this author Date: Sat, 04 Jun 2005 16:50:00 GMT Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse "msnews.microsoft.com" wrote: Is it that the buildin firewall can't handle too many connection at the same time? Not really. http://www.microsoft.com/technet/pro...aintain/sp2net... I check the event log, no strange or useful event generated. | Limited number of simultaneous incomplete outbound TCP connection | attempts | ... | When it does occur, a new event, with ID 4226, appears in the system's | event log. -- d-d Reply Tom Che [MSFT] Jun 6, 5:26 pm show options Newsgroups: microsoft.public.windowsxp.general From: (Tom Che [MSFT]) - Find messages by this author Date: Mon, 06 Jun 2005 09:26:10 GMT Local: Mon,Jun 6 2005 5:26 pm Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse Hi, Thanks for posting here. Also thanks for Carey and Detlev's kindly reply. From your post, my understanding of this issue is: If you keep Windows Firewall enabled and run multiple FTP command at the same time, the FTP will get hang. If this is not correct, please feel free to let me know. Based on your description, I cannot reproduce this issue on my computer. However, you may refer to our MVP's suggestion - modify the Registry (TcpNumConnections) or run "netsh winsock reset" to repair Winsock and TCP/IP, and then test this issue. If this issue persists, please let me know the following information if you need any further assistance: 1=2E Are you sure this issue will disappear if you turn off the Windows Firewall? 2=2E Does this issue occur on other computers? 3=2E Have you tried to use third-party FTP application to do a same test? Have a nice day! Sincerely, Tom Che Microsoft Online Partner Support Get Secure! - www.microsoft.com/security =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- - Hide quoted text - - Show quoted text - Message-ID: Date: Sat, 04 Jun 2005 16:50:00 GMT From: "Detlev Dreyer" Organization: Not responsible Subject: Problem about Window Xp SP2 firewall and the buildin FTP command References: X-Comment: MS-MVP Germany X-Importance: Normal X-Priority: 3 Content-Type: text/plain; charset=3DISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 17 Newsgroups: microsoft.public.windowsxp.general NNTP-Posting-Host: ACB1D506.ipt.aol.com 172.177.213.6 Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP15.phx.gbl Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windowsxp.general:401625 X-Tomcat-NG: microsoft.public.windowsxp.general "msnews.microsoft.com" wrote: Is it that the buildin firewall can't handle too many connection at the same time? Not really. http://www.microsoft.com/technet/pro...aintain/sp2net... x# - Hide quoted text - - Show quoted text - EIAA I check the event log, no strange or useful event generated. | Limited number of simultaneous incomplete outbound TCP connection | attempts | ... | When it does occur, a new event, with ID 4226, appears in the system's | event log. -- d-d Reply a ms user Jun 7, 12:14 am show options Newsgroups: microsoft.public.windowsxp.general From: "a ms user" - Find messages by this author Date: Tue, 7 Jun 2005 00:14:48 +0800 Local: Tues,Jun 7 2005 12:14 am Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse Dear Tom, Thanks for your reply. ***IN order to reproduce the error, you should press the ENTER key very FAST!!! *** I'm now at home without XP SP2, so can't modify the tcpnumconnections or try netsh.... i will try them tomorrow at office. Some ans. for your points: 1. Up to now, i try many times, this situation only occur when firewall is on. 2. I think this issue should happen on other computers, as i can reproduce this error on 3 other XP SP2 workstations. (2 desktops, 1 notebook) 3. Haven't try third party FTP software. But ever try using window's file explorer to down many files at the same time, no problem occur!!!! Today, in office, i run the ftp command in debug mode (issue command debug), after issue a get command, i compare the message PORT IP_address,port(e.g. PORT 192,168,11,1,1,252) and the pfirewall.log (locate at c:\windows) that no connection to such port (1252?) is established, instead many ports larger 5000, are used for data transfer.....do the firewall do some port-forwarding activities? BTW, today, i write a simple ftp program (using function FTPgetfileA,in wininet.dll, to get files), the problem occur too.. Don't know if this problem cause by firewall or limit of tcp connection ..=2E PS: i check the event log that no event of event id 4226 (generated when exceed 10 simantenous outgoing connection). Tom, please follow the steps mentioned again to reproduce the error. THANK YOU FOR YOUR KIND ATTENTION AND HELP. below is a sample of the ftp command files: -------------------------------------------------------- open ftp2.de.nero.com anonymous get iomega.zip get gear.zip get iomega.zip get gear.zip get iomega.zip get gear.zip get iomega.zip get gear.zip quit -------------------------------------------------------- "Tom Che [MSFT]" =C2=A6b=C2=B6l=C2=A5=C3=B3 =C2=A4=C2=A4=C2=BC=C2=B6=C2=BCg= ..=2E. - Hide quoted text - - Show quoted text - Hi, Thanks for posting here. Also thanks for Carey and Detlev's kindly reply. From your post, my understanding of this issue is: If you keep Windows Firewall enabled and run multiple FTP command at the same time, the FTP will get hang. If this is not correct, please feel free to let me know. Based on your description, I cannot reproduce this issue on my computer. However, you may refer to our MVP's suggestion - modify the Registry (TcpNumConnections) or run "netsh winsock reset" to repair Winsock and TCP/IP, and then test this issue. If this issue persists, please let me know the following information if you need any further assistance: 1. Are you sure this issue will disappear if you turn off the Windows Firewall? 2. Does this issue occur on other computers? 3. Have you tried to use third-party FTP application to do a same test? Have a nice day! Sincerely, Tom Che Microsoft Online Partner Support Get Secure! - www.microsoft.com/security =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- Message-ID: Date: Sat, 04 Jun 2005 16:50:00 GMT From: "Detlev Dreyer" Organization: Not responsible Subject: Problem about Window Xp SP2 firewall and the buildin FTP command References: X-Comment: MS-MVP Germany X-Importance: Normal X-Priority: 3 Content-Type: text/plain; charset=3DISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 17 Newsgroups: microsoft.public.windowsxp.general NNTP-Posting-Host: ACB1D506.ipt.aol.com 172.177.213.6 Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP15.phx.gbl Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windowsxp.general:401625 X-Tomcat-NG: microsoft.public.windowsxp.general "msnews.microsoft.com" wrote: Is it that the buildin firewall can't handle too many connection at the same time? Not really. http://www.microsoft.com/technet/pro...aintain/sp2net... x#EIAA I check the event log, no strange or useful event generated. | Limited number of simultaneous incomplete outbound TCP connection | attempts | ... | When it does occur, a new event, with ID 4226, appears in the system's | event log. -- d-d Reply a ms user Jun 7, 12:27 am show options Newsgroups: microsoft.public.windowsxp.general From: "a ms user" - Find messages by this author Date: Tue, 7 Jun 2005 00:27:22 +0800 Local: Tues,Jun 7 2005 12:27 am Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse sorry make a mistake about the interpretation of message PORT 192,168,11,1,1,252 actually i don't know if the port stand for 1252 or 508 -- 1 1111 1100 (binary) or 64513 -- 1111 1100 0000 0011 but no matter which intrepretation, do not exist in the firewall log (i setup to log successful connection) thanks "a ms user" =C2=A6b=C2=B6l=C2=A5=C3=B3 =C2=A4=C2=A4=C2=BC=C2=B6 =C2=BCg... - Hide quoted text - - Show quoted text - Dear Tom, Thanks for your reply. ***IN order to reproduce the error, you should press the ENTER key very FAST!!! *** I'm now at home without XP SP2, so can't modify the tcpnumconnections or try netsh.... i will try them tomorrow at office. Some ans. for your points: 1. Up to now, i try many times, this situation only occur when firewall is on. 2. I think this issue should happen on other computers, as i can reproduce this error on 3 other XP SP2 workstations. (2 desktops, 1 notebook) 3. Haven't try third party FTP software. But ever try using window's file explorer to down many files at the same time, no problem occur!!!! Today, in office, i run the ftp command in debug mode (issue command debug), after issue a get command, i compare the message PORT IP_address,port(e.g. PORT 192,168,11,1,1,252) and the pfirewall.log (locate at c:\windows) that no connection to such port (1252?) is established, instead many ports larger 5000, are used for data transfer.....do the firewall do some port-forwarding activities? BTW, today, i write a simple ftp program (using function FTPgetfileA,in wininet.dll, to get files), the problem occur too.. Don't know if this problem cause by firewall or limit of tcp connection .. PS: i check the event log that no event of event id 4226 (generated when exceed 10 simantenous outgoing connection). Tom, please follow the steps mentioned again to reproduce the error. THANK YOU FOR YOUR KIND ATTENTION AND HELP. below is a sample of the ftp command files: -------------------------------------------------------- open ftp2.de.nero.com anonymous get iomega.zip get gear.zip get iomega.zip get gear.zip get iomega.zip get gear.zip get iomega.zip get gear.zip quit -------------------------------------------------------- "Tom Che [MSFT]" =C2=A6b=C2=B6l=C2=A5=C3= =B3 =C2=A4=C2=A4=C2=BC=C2=B6=C2= =BCg... Hi, Thanks for posting here. Also thanks for Carey and Detlev's kindly reply. From your post, my understanding of this issue is: If you keep Windows Firewall enabled and run multiple FTP command at the same time, the FTP will get hang. If this is not correct, please feel free to let me know. Based on your description, I cannot reproduce this issue on my computer. However, you may refer to our MVP's suggestion - modify the Registry (TcpNumConnections) or run "netsh winsock reset" to repair Winsock and TCP/IP, and then test this issue. If this issue persists, please let me know the following information if you need any further assistance: 1. Are you sure this issue will disappear if you turn off the Windows Firewall? 2. Does this issue occur on other computers? 3. Have you tried to use third-party FTP application to do a same test? Have a nice day! Sincerely, Tom Che Microsoft Online Partner Support Get Secure! - www.microsoft.com/security =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- Message-ID: Date: Sat, 04 Jun 2005 16:50:00 GMT From: "Detlev Dreyer" Organization: Not responsible Subject: Problem about Window Xp SP2 firewall and the buildin FTP command References: X-Comment: MS-MVP Germany X-Importance: Normal X-Priority: 3 Content-Type: text/plain; charset=3DISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 17 Newsgroups: microsoft.public.windowsxp.general NNTP-Posting-Host: ACB1D506.ipt.aol.com 172.177.213.6 Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP15.phx.gbl Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windowsxp.general:401625 X-Tomcat-NG: microsoft.public.windowsxp.general "msnews.microsoft.com" wrote: Is it that the buildin firewall can't handle too many connection at the same time? Not really. http://www.microsoft.com/technet/pro...aintain/sp2net... x#EIAA I check the event log, no strange or useful event generated. | Limited number of simultaneous incomplete outbound TCP connection | attempts | ... | When it does occur, a new event, with ID 4226, appears in the system's | event log. -- d-d Reply Tom Che [MSFT] Jun 7, 9:06 pm show options Newsgroups: microsoft.public.windowsxp.general From: (Tom Che [MSFT]) - Find messages by this author Date: Tue, 07 Jun 2005 13:06:48 GMT Local: Tues,Jun 7 2005 9:06 pm Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse Hi, Thanks for your update. I have performed a lot of tests, but still have not expected result. Please see my tests as below: Note: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D (1). I copy your example ftp command file to a.txt saved in C:\dell folder. (2). I cannot turn off Windows Firewall, since it is controlled by Domain Policy in my computer. Therefore, all the tests as below were finished with enabled Windows Firewall. (3). I cannot add attachment zip file contains 5 JPG files which are screenshots in the newsgroup, so please let me know your E-mail and I will send it to you directly. Tests: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 1=2E I do followed your instruction, and I opened 6 command windows all including the same command "ftp -s:a.txt" under C:\dell. Please see 1=2EJPG. 2=2E I pressed ENTER on each window as fast as I could (I believed it was finished in 2 seconds), then I got the results as 2.JPG. From the screenshot, you can see that only 2 windows complete this command successfully, but other 4 windows get different errors including "Permission denied" and "Not connected". I have repeated step 1 & 2 about a dozen of times, and I got the exactly same results - 2 successes, 3 "Permission denied" and 1 "Not connected". 3=2E I thought there is a better way to run the command at the same time - using Scheduled Tasks to run 6 same tasks at one time. I edited a batch file named a.bat containing "ftp -s:c:\dell\a.txt". I added a Scheduled Task to run "a.bat ao.txt" as 3.JPG. 4=2E I copied a.job to other 5 Task files including b.job, c.job and so on. I also changed the output file to bo.txt, co.txt and so on. Please see 4=2EJPG. 5=2E At the scheduled time, these Scheduled Tasks were opened and run themselves as expected. After a while, all windows were closed automatically (I also noticed the error "Permission denied" appearing in some windows before close). And then I checked the output files - you can see the result from 5.JPG - ONLY 2 commands were successful again! Other 4 output files don't contain error information, but obviously they were failed. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D From above results, I believe this FTP Server (ftp2.de.nero.com) may allow only 2 sessions from the same IP address simultaneously. Therefore, I don't think this issue is related to Windows Firewall, but may be caused by different network environment or FTP Server. I recommend that you do the following tests for further troubleshooting: 1=2E Perform the multiple FTP commands test on a different network environment with enabled and disabled Windows Firewall. 2=2E Create a FTP Server by yourself, and make its setting to allow multiple sessions from one user at the same time. Then try this issue using your own FTP Server. BTW: I cannot find anything useful in my pfirewall.log file, either. Hope this helps! - Hide quoted text - - Show quoted text - Have a nice day! Sincerely, Tom Che Microsoft Online Partner Support Get Secure ! - www ..microsoft ..com /security =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D When responding to posts , please "Reply to Group " via your newsreader so that others may learn and benefit from your issue .. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D This posting is provided "AS IS " with no warranties , and confers no rights .. -------------------- From: "a ms user" References: - Hide quoted text - - Show quoted text - Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Date: Tue, 7 Jun 2005 00:27:22 +0800 Lines: 167 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1478 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1478 Message-ID: Newsgroups: microsoft.public.windowsxp.general NNTP-Posting-Host: 221.124.167.215 Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP14.phx.gbl Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windowsxp.general:402810 X-Tomcat-NG: microsoft.public.windowsxp.general sorry make a mistake about the interpretation of message PORT 192,168,11,1,1,252 actually i don't know if the port stand for 1252 or 508 -- 1 1111 1100 (binary) or 64513 -- 1111 1100 0000 0011 but no matter which intrepretation, do not exist in the firewall log (i setup to log successful connection) thanks "a ms user" =C2=A6b=C2=B6l=C2=A5=C3=B3 news:eT2IcLraFHA.3272@= TK2MSFTNGP10.phx.gbl =C2=A4=C2=A4=C2=BC=C2=B6 =C2=BCg... Dear Tom, Thanks for your reply. ***IN order to reproduce the error, you should press the ENTER key very FAST!!! *** I'm now at home without XP SP2, so can't modify the tcpnumconnections or try netsh.... i will try them tomorrow at office. Some ans. for your points: 1. Up to now, i try many times, this situation only occur when firewall is on. 2. I think this issue should happen on other computers, as i can reproduce this error on 3 other XP SP2 workstations. (2 desktops, 1 notebook) 3. Haven't try third party FTP software. But ever try using window's file explorer to down many files at the same time, no problem occur!!!! Today, in office, i run the ftp command in debug mode (issue command debug), after issue a get command, i compare the message PORT IP_address,port(e.g. PORT 192,168,11,1,1,252) and the pfirewall.log (locate at c:\windows) that no connection to such port (1252?) is established, instead many ports larger 5000, are used for data transfer.....do the firewall do some port-forwarding activities? BTW, today, i write a simple ftp program (using function FTPgetfileA,in wininet.dll, to get files), the problem occur too.. Don't know if this problem cause by firewall or limit of tcp connection .. PS: i check the event log that no event of event id 4226 (generated when exceed 10 simantenous outgoing connection). Tom, please follow the steps mentioned again to reproduce the error. THANK YOU FOR YOUR KIND ATTENTION AND HELP. below is a sample of the ftp command files: -------------------------------------------------------- open ftp2.de.nero.com anonymous get iomega.zip get gear.zip get iomega.zip get gear.zip get iomega.zip get gear.zip get iomega.zip get gear.zip quit -------------------------------------------------------- "Tom Che [MSFT]" =C2=A6b=C2=B6l=C2=A5=C3= =B3 =C2=A4=C2=A4=C2=BC=C2=B6=C2= =BCg... Hi, Thanks for posting here. Also thanks for Carey and Detlev's kindly reply. From your post, my understanding of this issue is: If you keep Windows Firewall enabled and run multiple FTP command at the same time, the FTP will get hang. If this is not correct, please feel free to let me know. Based on your description, I cannot reproduce this issue on my computer. However, you may refer to our MVP's suggestion - modify the Registry (TcpNumConnections) or run "netsh winsock reset" to repair Winsock and TCP/IP, and then test this issue. If this issue persists, please let me know the following information if you need any further assistance: 1. Are you sure this issue will disappear if you turn off the Windows Firewall? 2. Does this issue occur on other computers? 3. Have you tried to use third-party FTP application to do a same test? Have a nice day! Sincerely, Tom Che Microsoft Online Partner Support Get Secure! - www.microsoft.com/security =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- Message-ID: Date: Sat, 04 Jun 2005 16:50:00 GMT From: "Detlev Dreyer" Organization: Not responsible Subject: Problem about Window Xp SP2 firewall and the buildin FTP command References: X-Comment: MS-MVP Germany X-Importance: Normal X-Priority: 3 Content-Type: text/plain; charset=3DISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 17 Newsgroups: microsoft.public.windowsxp.general NNTP-Posting-Host: ACB1D506.ipt.aol.com 172.177.213.6 Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP15.phx.gbl Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windowsxp.general:401625 X-Tomcat-NG: microsoft.public.windowsxp.general "msnews.microsoft.com" wrote: Is it that the buildin firewall can't handle too many connection at the same time? Not really. http://www.microsoft.com/technet/pro...aintain/sp2net... p x#EIAA I check the event log, no strange or useful event generated. | Limited number of simultaneous incomplete outbound TCP connection | attempts | ... | When it does occur, a new event, with ID 4226, appears in the system's | event log. -- d-d Reply ping Jun 21, 6:22 pm show options Newsgroups: microsoft.public.windowsxp.general From: "ping" - Find messages by this author Date: 21 Jun 2005 03:22:15 -0700 Local: Tues,Jun 21 2005 6:22 pm Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Remove | Report Abuse Dear Tom, Sorry for so late to response to your reply on the newsgroup. I checked the firewall log, that the firewall drop several TCP SYN packets that may cause the FTP hand problem (seems waiting for server to connect to client for file transfer). Could you please give me your email address that i can send the screen capture, firewall log, etc to you. BTW, I always test the XP SP2 on both my own FTP server, production FTP server(both IIS 5.0, window 2000 server, service pack 4, with max. connections =3D 100, 000) and FTP server on IBM AIX. The problem occurs when firewall is turned on. The site: ftp2.de.nero.com is a reference site only that my FTP site is located within my company's intranet that can't let you try to connect for testing. Sorry for confusing you. I think this situation do not happen on individual PC due to wrong config. or installation problem, since i have also tested 3 new PCs, preinstalled with XP SP2 (2 HP, 1 IBM), the same problem occurs. Thank you for your kind attention. Tom Che [MSFT] =E5=AF=AB=E9=81=93=EF=BC=9A - Hide quoted text - - Show quoted text - Hi, Thanks for your update. I have performed a lot of tests, but still have not expected result. Please see my tests as below: Note: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D (1). I copy your example ftp command file to a.txt saved in C:\dell folde= r=2E (2). I cannot turn off Windows Firewall, since it is controlled by Domain Policy in my computer. Therefore, all the tests as below were finished with enabled Windows Firewall. (3). I cannot add attachment zip file contains 5 JPG files which are screenshots in the newsgroup, so please let me know your E-mail and I will send it to you directly. Tests: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 1. I do followed your instruction, and I opened 6 command windows all including the same command "ftp -s:a.txt" under C:\dell. Please see 1.JP= G=2E 2. I pressed ENTER on each window as fast as I could (I believed it was finished in 2 seconds), then I got the results as 2.JPG. From the screenshot, you can see that only 2 windows complete this command successfully, but other 4 windows get different errors including "Permission denied" and "Not connected". I have repeated step 1 & 2 about a dozen of times, and I got the exactly same results - 2 successes, 3 "Permission denied" and 1 "Not connected". 3. I thought there is a better way to run the command at the same time - using Scheduled Tasks to run 6 same tasks at one time. I edited a batch file named a.bat containing "ftp -s:c:\dell\a.txt". I added a Scheduled Task to run "a.bat ao.txt" as 3.JPG. 4. I copied a.job to other 5 Task files including b.job, c.job and so on. I also changed the output file to bo.txt, co.txt and so on. Please see 4.JPG. 5. At the scheduled time, these Scheduled Tasks were opened and run themselves as expected. After a while, all windows were closed automatically (I also noticed the error "Permission denied" appearing in some windows before close). And then I checked the output files - you can see the result from 5.JPG - ONLY 2 commands were successful again! Other= 4 output files don't contain error information, but obviously they were failed. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D From above results, I believe this FTP Server (ftp2.de.nero.com) may allow only 2 sessions from the same IP address simultaneously. Therefore, I don't think this issue is related to Windows Firewall, but may be caused = by different network environment or FTP Server. I recommend that you do the following tests for further troubleshooting: 1. Perform the multiple FTP commands test on a different network environment with enabled and disabled Windows Firewall. 2. Create a FTP Server by yourself, and make its setting to allow multiple sessions from one user at the same time. Then try this issue using your own FTP Server. BTW: I cannot find anything useful in my pfirewall.log file, either. Hope this helps! Have a nice day! Sincerely, Tom Che Microsoft Online Partner Support Get Secure! - www.microsoft.com/security =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D This posting is provided "AS IS" with no warranties, and confers no right= s=2E -------------------- From: "a ms user" References: Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Date: Tue, 7 Jun 2005 00:27:22 +0800 Lines: 167 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1478 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1478 Message-ID: Newsgroups: microsoft.public.windowsxp.general NNTP-Posting-Host: 221.124.167.215 Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFT NGP14.phx.gbl Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windowsxp.general:402810 X-Tomcat-NG: microsoft.public.windowsxp.general sorry make a mistake about the interpretation of message PORT 192,168,11,1,1,252 actually i don't know if the port stand for 1252 or 508 -- 1 1111 1100 (binary) or 64513 -- 1111 1100 0000 0011 but no matter which intrepretation, do not exist in the firewall log (i setup to log successful connection) thanks "a ms user" =C2=A6b=C2=B6l=C2=A5=C3=B3 news:eT2IcLraFHA.327= =C2=A4=C2=A4=C2=BC=C2=B6 =C2=BCg... Dear Tom, Thanks for your reply. ***IN order to reproduce the error, you should press the ENTER key very FAST!!! *** I'm now at home without XP SP2, so can't modify the tcpnumconnecti= ons or try netsh.... i will try them tomorrow at office. Some ans. for your points: 1. Up to now, i try many times, this situation only occur when firewall is on. 2. I think this issue should happen on other computers, as i can reproduce this error on 3 other XP SP2 workstations. (2 desktops, 1 notebook) 3. Haven't try third party FTP software. But ever try using window= 's file explorer to down many files at the same time, no problem occur!!!! Today, in office, i run the ftp command in debug mode (issue comma= nd debug), after issue a get command, i compare the message PORT IP_address,port(e.g. PORT 192,168,11,1,1,25= 2) and the pfirewall.log (locate at c:\windows) that no connection to such port (1252?) is established, instead many ports larger 5000, are used for data transfer.....do the firewall do some port-forwarding activities? BTW, today, i write a simple ftp program (using function FTPgetfileA,in wininet.dll, to get files), the problem occur too.. Don't know if this problem cause by firewall or limit of tcp connection .. PS: i check the event log that no event of event id 4226 (generated when exceed 10 simantenous outgoing connection). Tom, please follow the steps mentioned again to reproduce the erro= r=2E THANK YOU FOR YOUR KIND ATTENTION AND HELP. below is a sample of the ftp command files: -------------------------------------------------------- open ftp2.de.nero.com anonymous get iomega.zip get gear.zip get iomega.zip get gear.zip get iomega.zip get gear.zip get iomega.zip get gear.zip quit -------------------------------------------------------- "Tom Che [MSFT]" =C2=A6b=C2=B6l=C2=A5= =C3=B3 =C2=A4=C2=A4=C2=BC=C2=B6= =C2=BCg... Hi, Thanks for posting here. Also thanks for Carey and Detlev's kindly reply. From your post, my understanding of this issue is: If you keep Windo= ws Firewall enabled and run multiple FTP command at the same time, the = FTP will get hang. If this is not correct, please feel free to let me know. Based on your description, I cannot reproduce this issue on my computer. However, you may refer to our MVP's suggestion - modify the Registry (TcpNumConnections) or run "netsh winsock reset" to repair Winsock a= nd TCP/IP, and then test this issue. If this issue persists, please let me know the following information if you need any further assistance: 1. Are you sure this issue will disappear if you turn off the Windows Firewall? 2. Does this issue occur on other computers? 3. Have you tried to use third-party FTP application to do a same te= st? Have a nice day! Sincerely, Tom Che Microsoft Online Partner Support Get Secure! - www.microsoft.com/security =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- Message-ID: Date: Sat, 04 Jun 2005 16:50:00 GMT From: "Detlev Dreyer" Organization: Not responsible Subject: Problem about Window Xp SP2 firewall and the buildin F= TP command References: X-Comment: MS-MVP Germany X-Importance: ..=2E. read more =C2=BB Reply ping Jun 22, 6:02 pm show options Newsgroups: microsoft.public.windowsxp.general From: "ping" - Find messages by this author Date: 22 Jun 2005 03:02:09 -0700 Local: Wed,Jun 22 2005 6:02 pm Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Remove | Report Abuse - Hide quoted text - - Show quoted text - Dear Tom, Sorry for so late to response to your reply on the newsgroup. I checked the firewall log, that the firewall drop several TCP SYN packets that may cause the FTP hand problem (seems waiting for server to connect to client for file transfer). Could you please give me your email address that i can send the screen capture, firewall log, etc to you. BTW, I always test the XP SP2 on both my own FTP server, production FTP server(both IIS 5.0, window 2000 server, service pack 4, with max. connections =3D 100, 000) and FTP server on IBM AIX. The problem occurs when firewall is turned on. The site: ftp2.de.nero.com is a reference site only that my FTP site is located within my company's intranet that can't let you try to connect for testing. Sorry for confusing you. I think this situation do not happen on individual PC due to wrong config. or installation problem, since i have also tested 3 new PCs, preinstalled with XP SP2 (2 HP, 1 IBM), the same problem occurs. Thank you for your kind attention .. Reply David Candy Jun 22, 6:49 pm show options Newsgroups: microsoft.public.windowsxp.general From: "David Candy" . - Find messages by this author Date: Wed, 22 Jun 2005 20:49:58 +1000 Local: Wed,Jun 22 2005 6:49 pm Subject: Problem about Window Xp SP2 firewall and the buildin FTP command Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse No idea what you are talking about as you deleted all previous text. It sounds like you need passive FTP. Normal FTP both client and server computers are servers AND clients. One with the data (the server) and one with the control channel (the client). Clients connect to servers. In FTP both computers connect to the other. Passive is client to server computers only.
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