topic Re: Standard Ports on Applications in General Topics

Standard Ports on Applications

murphyj — Wed, 16 Jan 2013 21:41:48 GMT

I was wondering if anyone knew away to add a secondary default
port on an application. For example people in my company access web-browsing on
port 80 normally but there are a number of site that people have to use that
are based on port 8080. Is there a way to add more default ports so I do not
have to create more firewall rules than necessary? Thanks for your time.

Re: Standard Ports on Applications

mikand — Thu, 17 Jan 2013 06:24:20 GMT

"default-application" is hardcoded in the application-db.

You can however setup your own service-group which contains both TCP80 and TCP8080.

A problem with that might be if you in the same rule allow (or deny) more than one application.

For example:

appid: smtp, ssh

service: application-default

would mean that smtp would only be allowed on its default-port(s) (TCP25) while ssh would be allowed on its default-port(s) (TCP22).

Compared to if you have:

appid: smtp, ssh

service: test-service (containing TCP25, TCP22)

which would allow SMTP on both TCP25 and TCP22 and SSH on both TCP25 and TCP22.

A workaround for the above is of course to have one rule for smtp and another one for ssh and if you are not happy with application-default manually specify which port(s) should be allowed for each rule.

I think a workaround in your case might be if you create a custom-appid (name it custom-web-browsing or so) which is (in your case) based on "web-browsing" but where you for application-default type both TCP80 and TCP8080.

However im not sure if this custom-app will be detected before or after the built-in appid.

Re: Standard Ports on Applications

murphyj — Mon, 21 Jan 2013 16:44:49 GMT

Thank you. I will implement something along this line whena get a window to test it.

Re: Standard Ports on Applications

tsvaps001 — Fri, 27 Mar 2015 13:25:16 GMT

Do you know if I can copy or reference a predefined appid into a new custom-named one with other default ports? Or do I have to build all custom appids completely from scratch?