I Installed FreeBSD 10 running IPFW and Squid for proxying traffic out of my network. However I'm currently experiencing problems when connecting to specific port numbers. For instance, a connection to X.X.X.X on port 443 is whitelisted in both Squid and IPFW isn't a problem, however connecting to port 5000 or 58123 on the same IP fails (also whitelisted in IPFW and Squid). Reviewing the log files from IPFW and Squid shows the connection attempts were allowed. But the connection fails.
Setting up a simple telnet within FreeBSD also results in a "Connection refused" on these ports, while setting a telnet to 443 is successful. Testing different sites with different port numbers shows the same results, somehow these high port numbers are rejected. Disabling my firewall did not solve the problem, no other firewall is set up behind this FreeBSD install. Any suggestions?
Setting up a simple telnet within FreeBSD also results in a "Connection refused" on these ports, while setting a telnet to 443 is successful. Testing different sites with different port numbers shows the same results, somehow these high port numbers are rejected. Disabling my firewall did not solve the problem, no other firewall is set up behind this FreeBSD install. Any suggestions?