BuggyBoyNYC
asked on
Having problems with Automatic DNS Updates from DCs
Hello,
I have 2 DCs in two different locations connected via software VPN.
Both DCs run DNS server services on them.
However, one DC is behind an NAT router, so it only has a local address, while the other DC is behind a Cisco firewall co-located in a data center with both a public and a private IP.
The private IP works fine over the software VPN and can connunicate, however the co-located DC keeps updating it's DNS record for itself with both the public and the private IP address.
This is causing problems in the office where the NAT router sits because it tries to connect over a public IP when it should only be using the private IP.
I have tried to remove it in the DNS records, and it works perfectly.. However it keeps adding itself back in every couple of hours!
How can I stop this DNS server from updating itself with the public IP?
I have 2 DCs in two different locations connected via software VPN.
Both DCs run DNS server services on them.
However, one DC is behind an NAT router, so it only has a local address, while the other DC is behind a Cisco firewall co-located in a data center with both a public and a private IP.
The private IP works fine over the software VPN and can connunicate, however the co-located DC keeps updating it's DNS record for itself with both the public and the private IP address.
This is causing problems in the office where the NAT router sits because it tries to connect over a public IP when it should only be using the private IP.
I have tried to remove it in the DNS records, and it works perfectly.. However it keeps adding itself back in every couple of hours!
How can I stop this DNS server from updating itself with the public IP?
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ASKER
Thank you so much! :)
I'll be more happy if these steps actually resolve your issue...It is not like I have doubts...but technology has a mind of its own.... :D U never know...Do let me know the result.
ASKER
Added those two registry values, and restarted NetLogon and DNS Server services and it IMMEDIATELY resolved the issue! The only A record showing for the co-lo machine was the local address! :) Many thanks!!!!
You are welcome !! Just an advice...To be dead sure that it is fixed. Restart the Server in Off-Office hours and see if they are still missing. Take care..:) A lot of reregistration happens at the time of System Restart...:)
ASKER
However I think I should clarify one thing, I am not using RRAS I am using a seperate third-party software VPN on the system which creates a new network adapter with a private address (much like how a Cisco VPN client does, except this runs 24/7 with no disconnect).
I am not quite sure exactly what instruction set to follow since this isn't specifically RRAS!
Many thanks again, hope you can clarify for me! :)
For example sake, lets say the public address is 66.237.111.111 and the private is 10.2.2.1. How do I keep 66.237.111.111 from automatically registering in the DNS on this server, even though both are valid connections?