The Old Joel on Software Forum: Part 4 (of 5)

Computer Ports

This may be a dumb question - I am pretty new to computers.

Is there an online resource that maps computer ports?

e.g Port 100 -199 Are likely to be used for X purposes.

Thanks.

New England Patriots
Tuesday, February 3, 2004

You mean networking ports? I/O ports?

It's all out there, it's faster for you to google for it than ask.

Snotnose
Tuesday, February 3, 2004

http://www.iana.org/assignments/port-numbers

(if you mean networking ports)

note that this is the number one result for the google search "ports"

Elephant
Tuesday, February 3, 2004

Thanks for your posts.

I did Google - but the number 1 post, link given above, is a port map unique for MIT.

It has stuff like Port 2212 - Larry's database access point etc

Is there a more descriptive map out there?

New England Patriots
Tuesday, February 3, 2004

For Microsoft Windows Server System:

http://www.microsoft.com/downloads/details.aspx?familyid=e114b7e5-400f-45b6-9e1c-50968a0cc729&displaylang=en

Just me (Sir to you)
Tuesday, February 3, 2004

Huh? Unique for MIT? This is IANA we're talking about here. You're looking at a list that's over 12,000 entries long and complaining that it's too niche?

www.MarkTAW.com
Tuesday, February 3, 2004

That listing I posted is the official list as defined by the Internet Assigned Numbers Authority. If Larry's port is in there, it's only because he registered it. Search for whatever you want it's in there. All of them, including hijacked ports that people unofficially use.

If all you want is ports that are open on Windows 2003 Server, than I instruct you to provide a clearer request, or use Google.

Elephant
Tuesday, February 3, 2004

> I did Google - but the number 1 post, link given above, is a port map unique for MIT. It has stuff like Port 2212 - Larry's database access point etc

http://www.iana.org/assignments/port-numbers isn't unique for MIT.

Look at ports # 1485 for example, which are assigned to LANSource and 3Com: what that means that is LANSource/3Com wrote software, to which the IANA assigned a unique port number. LANSource/3Com then sell that software to anywhere in the world (for example, to you) and assume that port 1485 is available (not being used by any software).

Christopher Wells
Tuesday, February 3, 2004

2212 isn't assigned to anyone, though interestingly Larry appears to be the most popular name for port requestors.

The email address assigned to those ports that aren't well known are the individuals, usually at corporations, that made the original request.

Given the current trend for misusing email addresses its likely all those addresses are now no more than spam destinations.

Simon Lucy
Tuesday, February 3, 2004