Stealth Test Failed, not all ports are Stealth

peiraster · 05-09-2008, 06:12 AM

I regularly check my ports by going to the following link and clicking "All Service Ports":
http://www.grc.com/x/ne.dll?rh1dkyd2

I always pass the Stealth Test but today I found that it failed with the results copied below. I use NIS2007 and never changed any firewall setting or any other config. Does this pose a security threat? If so, how to fix it? Thanks

Results from scan of ports: 0-1055

0 Ports Open
2 Ports Closed
1054 Ports Stealth
---------------------
1056 Ports Tested

NO PORTS were found to be OPEN.

Ports found to be CLOSED were: 1048, 1052

Other than what is listed above, all ports are STEALTH.

TruStealth: FAILED - NOT all tested ports were STEALTH,
- NO unsolicited packets were received,
- NO Ping reply (ICMP Echo) was received.

Slapshot · 05-09-2008, 01:22 PM

Doesn't look to bad..
As long as all your ports are closed/stealth.

What 2 ports are closed?

peiraster · 05-09-2008, 01:32 PM

Quote:

Originally Posted by Slapshot

What 2 ports are closed?

As mentioned in my opening post: Ports found to be CLOSED were: 1048, 1052

johnwill · 05-10-2008, 06:57 AM

Those are odd port numbers to suddenly pop up. I'd probably want to know why...

It would help to know the exact make/model of the modem, any router, etc.

Slapshot · 05-10-2008, 07:26 AM

Those aren't important ports. They are secure enough. As long as the important ports (ie; 23) remain stealth, you should be fine.

johnwill · 05-11-2008, 01:38 PM

Sorry Slapshot, but I don't agree with your hasty assessment. Malware can be running on the computer and use any port number.

Slapshot · 05-13-2008, 01:14 PM

The port is still closed.

johnwill · 05-13-2008, 03:33 PM

Quote:

Originally Posted by Slapshot

The port is still closed.

That still doesn't explain why it appears as all.

**Cellus** · 05-15-2008, 10:32 PM

Open the command prompt (Start -> Run... -> type cmd) and enter in the command netstat -a . See if ports 1048 and 1052 show up, and if so, tell us what it says.

05-09-2008, 06:12 AM	#1 (permalink)
peiraster Registered User Join Date: Jul 2007 Posts: 56 OS: WinXP SP2	Stealth Test Failed, not all ports are Stealth I regularly check my ports by going to the following link and clicking "All Service Ports": http://www.grc.com/x/ne.dll?rh1dkyd2 I always pass the Stealth Test but today I found that it failed with the results copied below. I use NIS2007 and never changed any firewall setting or any other config. Does this pose a security threat? If so, how to fix it? Thanks Results from scan of ports: 0-1055 0 Ports Open 2 Ports Closed 1054 Ports Stealth --------------------- 1056 Ports Tested NO PORTS were found to be OPEN. Ports found to be CLOSED were: 1048, 1052 Other than what is listed above, all ports are STEALTH. TruStealth: FAILED - NOT all tested ports were STEALTH, - NO unsolicited packets were received, - NO Ping reply (ICMP Echo) was received.

05-09-2008, 01:22 PM	#2 (permalink)
Slapshot Registered User Join Date: Feb 2008 Posts: 117 OS: Vista	Re: Stealth Test Failed, not all ports are Stealth Doesn't look to bad.. As long as all your ports are closed/stealth. What 2 ports are closed?

05-10-2008, 06:57 AM	#4 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 27,300 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: Stealth Test Failed, not all ports are Stealth Those are odd port numbers to suddenly pop up. I'd probably want to know why... It would help to know the exact make/model of the modem, any router, etc. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

05-10-2008, 07:26 AM	#5 (permalink)
Slapshot Registered User Join Date: Feb 2008 Posts: 117 OS: Vista	Re: Stealth Test Failed, not all ports are Stealth Those aren't important ports. They are secure enough. As long as the important ports (ie; 23) remain stealth, you should be fine.

05-11-2008, 01:38 PM	#6 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 27,300 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: Stealth Test Failed, not all ports are Stealth Sorry Slapshot, but I don't agree with your hasty assessment. Malware can be running on the computer and use any port number. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

05-13-2008, 01:14 PM	#7 (permalink)
Slapshot Registered User Join Date: Feb 2008 Posts: 117 OS: Vista	Re: Stealth Test Failed, not all ports are Stealth The port is still closed.

05-15-2008, 10:32 PM	#9 (permalink)
Cellus Moderator Networking Team Join Date: Aug 2006 Location: Canada Posts: 2,388 OS: Windows XP Pro SP2 My System	Re: Stealth Test Failed, not all ports are Stealth Open the command prompt (Start -> Run... -> type cmd) and enter in the command netstat -a . See if ports 1048 and 1052 show up, and if so, tell us what it says. __________________ TSF Networking Team HijackThis 5 Step Process Donate!