How do u close a port!!

[Turmoil]

I found this program called "TCP VIEW" and it shows all the traffic on the different ports... It doesn't really show you which ones are open, unless there is traffic already on them.. But it shows you the traffic and you can choose to close the port off to that service if ya want

[!mitationRust]

Active Ports
http://www.webattack.com/get/activeports.shtml

Infiltrator Network Security Scanner 1.01
http://www.webattack.com/features/in...704-428944.php

AW Ports Traffic Analyzer
http://www.webattack.com/get/awpta.html

AW Security Port Scanner
http://www.webattack.com/get/awebscanner.html

DiamondCS Port Explorer
http://www.webattack.com/get/portexplorer.html

Advanced Port Scanner
http://www.webattack.com/get/advportscan.html

Port Listener XP
http://www.webattack.com/get/portxp.html

SuperScan - network scanner
http://www.webattack.com/get/superscan.html

[Aftiel]

NOTE: This response to the poster is slanted towards Linux.

In Linux, I use the command:

netstat -tap|grep LISTEN

to find out what services are listening. Our immediate reaction is to "close" or "disable" all ports, however (as was pointed out,) normally a better option is to secure the ports/services individually.

Especially if we are talking in terms of learning security. Take the opportunity to properly secure applications/ports, then monitor them.

You can also use those to work on breaking them yourself. The standard reaction to something like Sendmail is to disable it if it is not being used.

Take that opportunity to learn how to secure it - so in the future it is old news when you need to use it.

There are obvious exceptions to this - such as X11, which likes to start default by listening. Since we normally do not share X11 with the world, that can be stopped.

In terms of Windows, the same can be applied. With open ports, we can learn how to properly secure and monitor them (i.e. only allow internal network traffic on them, or DENY certain IP's etc.)

I feel if we simply close or disable everything, we lose a chance at learning how to really "secure" something.

.: Aftiel

[harrybuzzi]

There`s a little Tool called TCPView.exe from Sysinternals.com.
Using this you can see all open ports on your computer and close them-if you want.

[Sgear17]

i thinks the other is right you can close a port by using a firewall and you can open them if you want just configure it on the firewall configuration.... Some firewall that ive use is the Agnitum and Zone Alarm check them out in the google.com hope this help you a litle bit

[\/IP3R]

Originally posted here by mafia_almighty

u can view all the open ports on my PC ....but what should i do ... if dont want a particular port on my PC to be open..???

plz reply!!!

go to start menu ------>run------->cmd-----.enter
type netstat -na, this will give you the details which ports are open and which connection is established. Then you can go to your firewall. I don't know which one you are using but I use zone alarm, if you use zone alarm then double click on zonealarm icon on task bar. Click on firewall option, on the main window of it there should be two bars one in internet zone security and another in trusted zone security. Click on custom button on internet zone security. This will open custom firewall setting window with internet zone window activated. Scroll down where you can see tcp/udp incoming/outgoing port numbers. Just select your choice of tcp or udp and incoming or outgoing and then enter the port number in the dialog box and presss apply. If you are not using zone alarm I am sure your firewall should have some sort of traffic blocking feature init.

[Iaio]

@ !mitationRust

I think that IRC is on port:6667 by default. But anyway 10x for the huge info it helps me a lot.

[!mitationRust]

Originally posted here by Iaio
@ !mitationRust

I think that IRC is on port:6667 by default. But anyway 10x for the huge info it helps me a lot.

ircd 6667/tcp # Internet Relay Chat
ircd 6667/udp # Internet Relay Chat

http://www.comptechdoc.org/independe.../netports.html

irc 194/tcp # Internet Relay Chat
irc 194/udp

http://perso.netinfo.fr/GeKhaJoFour/...pp-page-5.html

irc 194/tcp Internet Relay Chat Protocol
irc 194/udp Internet Relay Chat Protocol

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

ircu 6665-6669/tcp IRCU
ircu 6665-6669/udp IRCU

Yeah keep the change!!!

[Iaio]

@!mitationRust

ok. I guess you know a lot about ports so explain to me what is the difference, please. ircd, irc, ircu. all of them look the same to me.

[tyfon]

I am running suse 8.2 How should i close the ports i dont need? (not block them) Also,is the susefirewall good enough to protect me?