DNS Record or Port Mapping?
Posted on 2014-03-20
I have a web server sitting inside of a production network. This web server, tdxs3, has been assigned an external IP address of 220.127.116.11 which DNS should point to it's internal IP address of 172.30.115.246. When trying to hit it from the outside using tdxs3.dsdk12.net, nothing pops up. Hit the IP however, and it works. (Internally, everything works, of course - nothing to resolve) By the way, the switch routes the external IP to the internal IP. So, I think it's port mapped properly. So I'm fairly certain this is a DNS issue. I've changed the DNS record, incremented the SOA serial and restarted named. (FreeBSD box) But even after 24 hours, I'm getting nothing. (I have two DNS zone masters, one for external, the other for internal)
This is the record for external:
tdxs3 IN A 18.104.22.168
tdxs3 IN CNAME tdxs3.dsdk12.net
tdxs3 A 172.30.115.246
Am I missing something really obvious here?