Newb networking question regarding ports...

Newb networking question regarding ports...

Curious, are there certain ports you don't have to open up on a wireless router that has a built in firewall such as port 80 and 443 (https)?

Find more posts tagged with

Free for TechExams community: Cybersecurity salary guide

Compare cert salaries and plan your next career move

Button

Comments

networker050184

Inbound or outbound? I'd assume on 99% of SOHO wireless routers everything is allowed outbound by default. Might want to check you specific device manufactures info to be sure though.

TechGuy215

Use ShieldsUp by GRC: https://www.grc.com/x/ne.dll?bh0bkyd2

It's a free port scanning utility. You can take a look at what ports are open and what ports are closed.

The ports you will want to leave open are dependent upon the protocols you are using in your network, i.e. FTP, SNMP, SMTP, POP3, etc...

gbdavidx

well i was referring to outbound, i guess that makes sense if all outbound is not blocked! thanks, i'll have to try that tonight techguy!

TechGuru80

In my experience with consumer routers protocols such as SSH, and telnet internally have issues working. Some routers work ok but others seem to have issues like this...thankfully commercial routers are good to go.

santaowns

Most home routers allow common connections to allow. such as RDP HTTP(80) SSL (443) etc etc to ease use for people who are technically inclined. The best rule to set on any business firewall is to deny all(at first setup!). This way you can determine why its being used and by who as they will complain that x program will not work. Just my 2 cents

networker050184

santaowns wrote: »

This way you can determine why its being used and by who as they will complain that x program will not work. Just my 2 cents

Horrible way to go about it IMO. Why not just do some research and find out what legitimately needs to traverse the network before setting it up? The 'see who complains' is such a lazy way out I see thrown around here a so much.