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Thread: PTR query
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- Join Date
- Dec 2007
I have a primary dns server based on suse linux server (sles10) and a firewall cisco pix already configured.
I think there is a configuration problem. I explain:
In my dns server I already configured an A record i.e. www. example .com for the domain example.com with ip 18.104.22.168 and a PTR record: 22.214.171.124 to www .example .com
From a pc using a external internet connection I check for name resolution so:
ping www.example.com -c 1 xx bytes from xxxxxxxx.example.com (126.96.36.199)
But if a check for PTR record, so I check the reverse lookup resolution,:
host 188.8.131.52 184.108.40.206.in-addr.arpa not found
If I made the same test using a pc in the same local network of the dns server
(so bypassind the firewall) all it works.
I think that the problem is the firewall.
Can you please tell me how I have to check in the firewall rules?
Maybe the PRT query use a specific port that I have to "open" in the firewall?