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09-07-2007, 07:19 AM
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#1
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LQ Newbie
Registered: Aug 2007
Posts: 13
Rep: 
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DNS ports and linux firewall
Hi
If a DNS server is using as a domain hosting so it should also initiated in a zone transfer. Is this logic is correct. If zone transfer has to be initiated which ports should be open and which sources for the zone transfer has to be chosen.
Is UDP port 53 only used as a dns resolution or it also should be opened outbound as that of tcp port 53 which is used for zone transfer.
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09-07-2007, 10:49 AM
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#2
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Senior Member
Registered: May 2006
Distribution: BeOS, BSD, Caldera, CTOS, Debian, LFS, Mac, Mandrake, Red Hat, Slackware, Solaris, SuSE
Posts: 1,761
Rep: 
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Prot Src Dst Use
udp 53 53 Queries between servers (eg, recursive queries)
Replies to above
tcp 53 53 Queries with long replies between servers, zone
transfers Replies to above
http://www.faqs.org/faqs/internet/tc...ins-faq/part1/
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