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Forcing more accurate DNS lookup
Hey all,
I hope someone here can help me--this isn't the most ideal forum for this question (I dont think). I have a computer at home, and my ISP assigns me a dynamic IP address. So, I use a service known as DYNU (www.dynu.com) to get my IP address. The problem is that, if my home IP address changes, it seems the DNS server for the university from which I access my home computer caches the IP address way too long, and so I am unable to connect because it keeps thinking the IP address it wrong. Is there anyway I can configure windows to contact a specific DNS server for all addresses of the form *.DYNU.com, and avoid the university's DNS server FOR THIS ADDRESS ONLY, entirely? Thanks Rob |
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#2
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Forcing more accurate DNS lookup
Hi Rob,
Does the UNI use a proxy server or appliance to access the 'net? If so, that would be a pain as the caching is probably done at that point. Maybe get your home system to email you its WAN IP every half hour? CreateWindow http://mymessagetaker.com "Rob" wrote in message oups.com... Hey all, I hope someone here can help me--this isn't the most ideal forum for this question (I dont think). I have a computer at home, and my ISP assigns me a dynamic IP address. So, I use a service known as DYNU (www.dynu.com) to get my IP address. The problem is that, if my home IP address changes, it seems the DNS server for the university from which I access my home computer caches the IP address way too long, and so I am unable to connect because it keeps thinking the IP address it wrong. Is there anyway I can configure windows to contact a specific DNS server for all addresses of the form *.DYNU.com, and avoid the university's DNS server FOR THIS ADDRESS ONLY, entirely? Thanks Rob |
#3
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Forcing more accurate DNS lookup
Rob wrote:
Hey all, I hope someone here can help me--this isn't the most ideal forum for this question (I dont think). I have a computer at home, and my ISP assigns me a dynamic IP address. So, I use a service known as DYNU (www.dynu.com) to get my IP address. The problem is that, if my home IP address changes, it seems the DNS server for the university from which I access my home computer caches the IP address way too long, and so I am unable to connect because it keeps thinking the IP address it wrong. Is there anyway I can configure windows to contact a specific DNS server for all addresses of the form *.DYNU.com, and avoid the university's DNS server FOR THIS ADDRESS ONLY, entirely? No, you can't do that by the nature of DNS. However, as someone says, you can get your IP address mailed to you every morning, and if you are any good at scripting, you could put that in your 'hosts' file. Cheers, Cliff -- Have you ever noticed that if something is advertised as 'amusing' or 'hilarious', it usually isn't? |
#4
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Forcing more accurate DNS lookup
On Apr 28, 10:39 pm, Rob wrote:
Hey all, I hope someone here can help me--this isn't the most ideal forum for this question (I dont think). I have a computer at home, and my ISP assigns me a dynamic IP address. So, I use a service known as DYNU (www.dynu.com) to get my IP address. The problem is that, if my home IP address changes, it seems the DNS server for the university from which I access my home computer caches the IP address way too long, and so I am unable to connect because it keeps thinking the IP address it wrong. Is there anyway I can configure windows to contact a specific DNS server for all addresses of the form *.DYNU.com, and avoid the university's DNS server FOR THIS ADDRESS ONLY, entirely? Thanks Rob The DNS service takes 24 to 48 hours for the IP address to DNS entry to be updated. I do not use DYNU.org but I have had great success with DYNDNS.ORG. They have a free service also. |
#5
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Forcing more accurate DNS lookup
On Apr 29, 12:39 pm, Rob wrote:
.....So, I use a service known as DYNU (www.dynu.com) to get my IP address. The problem is that, if my home IP address changes, it seems the DNS server for the university from which I access my home computer caches the IP address way too long, and so I am unable to connect because it keeps thinking the IP address it wrong. I think you'll find that the main problem here is that Dynu's DNS and other services are broken and I believe the company has essentially 'shut up shop' and is totally uncontactable. To prove this, try using nslookup and set the server to ns.dynu.com - I think you'll find that it is their servers that are not updating rather than any problem with caching. Wayne |
#6
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Forcing more accurate DNS lookup
Very true, all. DYNDNS.ORG is much better. Switched now.
On May 4, 9:51 pm, wrote: On Apr 29, 12:39 pm, Rob wrote: .....So, I use a service known as DYNU (www.dynu.com) to get my IP address. The problem is that, if my home IP address changes, it seems the DNS server for the university from which I access my home computer caches the IP address way too long, and so I am unable to connect because it keeps thinking the IP address it wrong. I think you'll find that the main problem here is that Dynu's DNS and other services are broken and I believe the company has essentially 'shut up shop' and is totally uncontactable. To prove this, try using nslookup and set the server to ns.dynu.com - I think you'll find that it is their servers that are not updating rather than any problem with caching. Wayne |
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