Close TCP port

[yhchooi]

How do I close a tcp port, eg tcp port no 1433, in a Windows 2000 server? Best Regards
YH Chooi

 

[StarTAC]

the first and most basic method, would be to stop the service that is runnning on that port.. for instance, to close off port 25 u would have to stop the SMTP service...

however, if u want to keep the port open, but not to the public, then a firewall would be a good idea...

for total protection, close off the port, and configure the firewall to reject access to that port.. do this for the rest of your services..

good luck..

 

[kb3cgj]

FYI: The worm was spread through udp, not TCP. Nick Mitchell
Network Engineer
Delaware.Net

 

[Accessdabbler]

I think he's asking how you could manually close a specific port without using firewall software. I'm guessing you'd have to write a program to do it as Windows doesn't have a method of "turning off" ports.

 

[kb3cgj]

Sure windows 2000 has port security built in. Ok here we go:

Open up you Lan connection Properties...

Click on TCP/IP Properties

Click on Advanced

Click on Options Tab

Click on TCP/IP Filtering options

Enable TCP/IP Filtering

And Close whatever you want, well it works backwards you have to close everything and open whatever you want.

Cheers,

Nick Mitchell
Network Engineer
Delaware.Net

 

[Accessdabbler]

LOL! Crap, I forgot about that.

 

[kb3cgj]

Nick Mitchell
Network Engineer
Delaware.Net