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DNS update

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by noorazman

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I am running 2 dns server. I want 2ndary server to get update from the primary server. My primary dns is on linux and put fwbuilder for easy iptables administration. What kind a rules should I put so that the 2ndary server able to get update from the primary server ?
May be the rules look like this ??

source dest protocol Action
2ndary? Primary 53-TCP? or Accept
or Any? 53-UDP?

Please help. This easy for expert.

1 reply

by r00ki

53 TCP is for Zone Transfer, 53 UDP is for your client DNS queries. So allow 53 tcp to transfer the update.

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