Today I ran into this warning from iceweasel when I tried to access a web service on port 101:
This address is restricted
This address uses a network port which is normally used for purposes other than Web browsing. Iceweasel has canceled the request for your protection.
I found this article which said:
- Open about:config
- Create network.security.ports.banned.override if it’s not there
- Set that setting as, e.g.: 101-104
- Refresh the page