I am renting a VPS with Debian installed running JBoss AS6 for my web app. I recently had some problems with my DNS hosts as they messed up the A-records for my domain which caused some new A-records to be added by mistake.
The DNS problem is now sorted and the domain is working ok, however I noticed that the web server no longer responds via direct IP or hostname in a web browser (although it pings ok and I can SSH in using the hostname ok).
I am using rinetd to forward traffic from 80 to port 8080, see below the output from the rinetd log (masked the IP addresses)
Webpage requested using www.mydomain.com
16/Jan/2013:11:04:15 220.127.116.11 77.**.6.32 80 77.**.6.32 8080 4923 6196 done-local-closed
Webpage requested using IP, hostname or naked domain (without www)
16/Jan/2013:11:08:21 18.104.22.168 77.**.6.32 80 77.**.6.32 8080 0 0 done-remote-closed
This suggests to me that the requests are being received by the server, but rinetd logs show no data sent / received from the client? Does this mean the request is being blocked?
As per answer below I have checked IP Tables for firewall rules and output is
Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination
Which seems to indicate there are no additional rules setup?
I am still thinking this is an issue with my DNS host as it was working before they cocked up the A-records, but they have insisted the mappings are correct, is there a way to verify this?