Hello all,
I am trying to configure a subdomain DNS server on a Cent OS 5.1 - for my lab. Brief configuration:
Lab machine ---> 192.168.17.2 (should respond to DNS queries from hosts in 192.168.16.0/20 network)
1. I would also like to forward any queries outside the above network to our corporate domain (no firewalls between our 192.168.16.x network and the corporate network. The domain server is: dns.company.com with an IP of 10.100.1.2 (255.255.255.0).
2. What I have configured is:
192.168.17.2 --> myhost.lab.company.com 10.100.1.2 --> dns.company.com
3. Installed the dns bind 9 in myhost and set basic configuration via the system-config-bind GUI. My configuration file specific to my setup there is:
cat lab.maxiscale.com.db $TTL 1H @ SOA myhost.lab.company.com. root.myhost.lab.company.com. ( 2 3H 1H 1W 1H ) NS myhost.lab.company.com. qaserver2 A 192.168.17.3 qaserver1 A 192.168.17.1 myhost A 192.168.17.2
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The rest of the DNS/Bind records were based upon the auto-generated files from the Bind GUI Config tool.
3. I also changed myhost's resolv.conf to reflect the following:
search lab.mycompany.com 192.168.17.2 search mycompany.com 10.100.1.2
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PROBLEM:
1. When I am in myhost.com, I can perform: a. nslookup hostname (to any host within 192.168.x and 10.100.x networks) b. nslookup ip to anyhost wtihin both networks.
2. When I am in one of the hosts within 192.168.x aside from myhost.com (for example, qaserver1 or qaserver2):
a: SUCCESS to nslookup hostname to any host within BOTH networks. b. FAILS to nslookup ip (reverse nslookup) to anyhost within the 10.100.x network.
this is the error I get:
nslookup 10.100.1.2 Server: 192.168.17.2 Address: 192.168.17.2#53
Non-authoritative answer: 24.1.100.10.in-addr.arpa name = dns.company.com.
Authoritative answers can be found from: . nameserver = e.root-servers.net. . nameserver = f.root-servers.net. . nameserver = g.root-servers.net. . nameserver = h.root-servers.net. . nameserver = i.root-servers.net. . nameserver = j.root-servers.net. . nameserver = k.root-servers.net. . nameserver = l.root-servers.net. . nameserver = m.root-servers.net. . nameserver = a.root-servers.net. . nameserver = b.root-servers.net. . nameserver = c.root-servers.net. . nameserver = d.root-servers.net. a.root-servers.net internet address = 198.41.0.4 b.root-servers.net internet address = 192.228.79.201 c.root-servers.net internet address = 192.33.4.12 d.root-servers.net internet address = 128.8.10.90 e.root-servers.net internet address = 192.203.230.10 f.root-servers.net internet address = 192.5.5.241 g.root-servers.net internet address = 192.112.36.4 h.root-servers.net internet address = 128.63.2.53 i.root-servers.net internet address = 192.36.148.17 j.root-servers.net internet address = 192.58.128.30 k.root-servers.net internet address = 193.0.14.129 k.root-servers.net has AAAA address 2001:7fd::1 l.root-servers.net internet address = 199.7.83.42
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I must be missing something stupid and apparent .... any help would be greatly appreciated!!!
:)
thanks in advance!