Nameserver behind firewall
Michael Kjorling
michael at kjorling.com
Tue Jul 31 17:02:11 UTC 2001
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I have no problems at all:
; <<>> DiG 9.1.3 <<>> @ns1.mydomain.com. mydomain.com. soa
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62082
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 4
;; QUESTION SECTION:
;mydomain.com. IN SOA
;; ANSWER SECTION:
mydomain.com. 2560 IN SOA ns1.mydomain.com. hostmaster.mydomain.com. 996591852 16384 2048 1048576 2560
;; AUTHORITY SECTION:
mydomain.com. 259200 IN NS ns1.mydomain.com.
mydomain.com. 259200 IN NS ns2.mydomain.com.
mydomain.com. 259200 IN NS ns3.mydomain.com.
mydomain.com. 259200 IN NS ns4.mydomain.com.
;; ADDITIONAL SECTION:
ns1.mydomain.com. 86400 IN A 216.34.13.236
ns2.mydomain.com. 86400 IN A 64.75.34.132
ns3.mydomain.com. 86400 IN A 64.75.34.140
ns4.mydomain.com. 86400 IN A 64.75.34.134
;; Query time: 227 msec
;; SERVER: 216.34.13.236#53(ns1.mydomain.com.)
;; WHEN: Tue Jul 31 19:00:25 2001
;; MSG SIZE rcvd: 213
Michael Kjörling
On Jul 31 2001 04:33 -0700, Andrew L wrote:
> I'm having problems getting BIND to work correctly.
>
> I'm running BIND 9.x on Redhat Linux 7.1
>
> I've set up the nameserver so that I can dig @locahost on the nameserver and
> get the correct result.
> But if I try dig @ns1.mydomain.com I get a connection timed out; no servers
> could be reached.
> My network's ip address is mapped to ns1.mydomain.com.
>
> netstat -a reports that localhost.localdomain:domain is listening on tcp
> and udp. It also reports that my internal ip address is listening on the
> domain port on tcp and udp. My nameserver is behind a firewall on which I've
> got the "domain" port mapped to the nameserver.
>
> I tried nslookup from another computer behind the firewall and I cannot get
> a response from the nameserver, but I'm able to telnet into it from both
> inside and outside the firewall, using the same port mapping techniques.
>
> What could possibly be the problem?
>
> Thanks in advance for any help
> ,Andy
- --
Michael Kjörling - michael at kjorling.com - PGP: 8A70E33E
Manager Wolf.COM -- Programmer -- Network Administrator
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