Port fowarding/NAT and web server confusion


Nov 24, 2008
Okay so I'm trying to setup owncloud on CentOS 6.5 in a virtual host and then a regular website with just splash page, use yet to be determined.

address is:cloud.domain.org (owncloud) and also domain.com has a splash page (avoid apache ugly default page)

i try to access domain.com from my internal network on my PC and it tell me this.

"Potential DNS Rebind attack detected, see http://en.wikipedia.org/wiki/DNS_rebinding
Try accessing the router by IP address instead of by hostname. " and sometimes it even shows me my login page to my router/firewall(pfsense)

I can successfully establish connection to my domain.com and cloud.domain.com from a PC connected outside my home network(MIFI device). I'm thinking the issue is with my NAT/firewall rules. I'm really rusty when it comes to port configuration. Anyone have any insight into what i need to change?

Nat table on pfsense: http://tinypic.com/r/2qlwci9/8

Firewall rules:http://tinypic.com/r/2epprn4/8

Thank you.


Supreme [H]ardness
Mar 18, 2008
You need to setup NAT Hairpinning or Reflection. (Same thing.) Google that for PFSense and you should get your answer.