TCP Ports

natasd · 10-02-2006, 12:33 AM

Hello, I have a concern, but I am unsure if it is in fact a problem to worry about or not.

I play the game Diablo 2, and I was about to look up which server I was connected to, so I went into my command prompt and ran "netstat -n" and it came back with a bunch of open TCP ports which I've never seen before. Image below. Is this normal, or do I have a problem?

**johnwill** · 10-03-2006, 05:28 PM

Not from those, they're the address of your loopback address. Those connections aren't going outside of your machine.

Many applications that are TCP/IP based use the loopback adapter to function, just because it's easier than having two different ways to communicate.

natasd · 10-03-2006, 07:58 PM

All right, well thanks for replying. I did notice that it was my loopback address, but I was still kind of worried because of all the open ports. I did a little research on the port numbers and some of the common applications that use those ports and some came back as malicious. An example would be "TCP 2442 W32.Spybot, W32.Kelvir" Taken from here http://www.bekkoame.ne.jp/~s_ita/port/port2400-2499.html

**Cellus** · 10-05-2006, 01:05 PM

While you "might" be concerned (even then I say it loosely), you'll be fine if it's the loopback address. Even then if it is a connection to the outsideyou are using a half-decent firewall, updated antivirus/antispyware, and decent surfing habits you should be fine. The majority of multiplayer games use a wide range of ports.

10-02-2006, 12:33 AM	#1 (permalink)
natasd Registered User Join Date: Oct 2006 Posts: 9 OS: WinXP Pro SP3	TCP Ports Hello, I have a concern, but I am unsure if it is in fact a problem to worry about or not. I play the game Diablo 2, and I was about to look up which server I was connected to, so I went into my command prompt and ran "netstat -n" and it came back with a bunch of open TCP ports which I've never seen before. Image below. Is this normal, or do I have a problem?

10-03-2006, 05:28 PM	#2 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,720 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Not from those, they're the address of your loopback address. Those connections aren't going outside of your machine. Many applications that are TCP/IP based use the loopback adapter to function, just because it's easier than having two different ways to communicate. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

10-05-2006, 01:05 PM	#4 (permalink)
Cellus Moderator Networking Team Join Date: Aug 2006 Location: Canada Posts: 2,664 OS: Windows Vista Business SP1, Windows XP Professional SP3 My System	While you "might" be concerned (even then I say it loosely), you'll be fine if it's the loopback address. Even then if it is a connection to the outsideyou are using a half-decent firewall, updated antivirus/antispyware, and decent surfing habits you should be fine. The majority of multiplayer games use a wide range of ports. __________________ TSF Networking Team Virus/Trojan/Spyware Removal Help Donate!

10-03-2006, 07:58 PM	#3 (permalink)
natasd Registered User Join Date: Oct 2006 Posts: 9 OS: WinXP Pro SP3	All right, well thanks for replying. I did notice that it was my loopback address, but I was still kind of worried because of all the open ports. I did a little research on the port numbers and some of the common applications that use those ports and some came back as malicious. An example would be "TCP 2442 W32.Spybot, W32.Kelvir" Taken from here http://www.bekkoame.ne.jp/~s_ita/port/port2400-2499.html