Web Proxy - Proxy Port 800 not possible

[t.mayer]

Due tu historical reasons our students are using port 800 in there mobile-device-proxy-settings.
No I want to switch from pfsense (where port 800 was possible ) to opnsense.
When I change the default port (3128) to 800 the proxy-server wont start again.

Error in the logs: Fatal: Unable to open http socket
On the console sockstat -4 -l does not show port 800 to be in use.

Can you help me please!

Greeds and thanks!
Tom

[fabian]

ports 0 < x < 1024 need root privileges to bind. It is probably cheaper if you just add a DNAT (port Forward) rule to the interface IP (NOT localhost as this is used to intercept)

[t.mayer]

Hey Fabian,

thanks for the quick response!
Your suggestion works for me with the following NAT-rule:

• Interface: LAN
• TCP/Protocol: IPv4/TCP+UDP
• Destination port range: 800
• Redirect target ip: <ip of OPNsense>
• Redirect target port: 3128

Thanks for your help!