Well, for Firefox users, there's a solution. Here's how
Unblocking/allowing ports in Firefox
- Launch Firefox
- Go to the address bar and type about:config. Firefox will complain about some warranty just click ok or "I'll be careful, i promise" button
- Anywhere inside the list of configurations, right click and say New --> String
- In the string value, enter network.security.ports.banned.override then click OK
- It will now ask you what port, say 79 or whatever port you need to have firefox access. Click OK.
- And try again to the website you want to access. These settings should remain forever.
For Chrome, we've got some bad news, it is not possible to access certain ports. This is confirmed by Google Chrome team members. The only way is to get the hosting site to change and not to use following ports.
Chrome banned ports: http://src.chromium.org/viewvc/chrome/trunk/src/net/base/net_util.cc look under the kRestrictedPorts directive.