kosiac
join:2001-01-10
Dayton, OH
| reply to Daniel
Re: DNS and Netgear...
Interesting. For me, the virtual circuit only fails when querying the router and not the external dns. I tried this from both my systems(XP and 2K). If I turn it off (it is by default in nslookup) the query works fine to the router.
Can you explain what "Virtual Circuit" actually means? I can not find a good definition of it.
Do you think I should I reload firmware or just restore the factory defaults or both?
True the router is not an authoritative source for DNS, I thought it acts as a DNS proxy, and it maintains a table with cached DNS entries and various other elements. I thought it was more than a passive pass through to the authoritative sources.
[text was edited by author 2002-07-31 00:43:42] |
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kosiac
join:2001-01-10
Dayton, OH
| Answered one of my own questions. Found this about Virtual Circuit:
DNS uses IP port number 53 and can either use UDP or TCP for transport. Generally, UDP (limited to 512 bytes) is used for queries and responses i.e. Lookups but, TCP (virtual circuit) has to be used for Zone Transfers as the data shared between authoritative servers handling particular zones needs to be reliable.
Possibly the vc is unsupported on the Netgear.
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- Dayton, Ohio, The TRUE Birthplace of Aviation - |
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SYNACK
Just Firewall It
Premium,Mod
join:2001-03-05
Venice, CA
 ·Comcast Formerly ..
Host:
Networking
Virtual Private Ne..
Netgear
ZyXEL
| Yes, the router only listens for 53/UDP, not TCP.
try:
ip tcp stat
ip udp stat
... to see all services running on the router.
Simply configure with the external DNS servers directly, then it's just another outgoing TCP connection.
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Where in the world is LA/OC ? |
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