Firewall tested by Gibson Research Corporation failed

Comodo Internet Security - CIS Firewall Help - CIS
#1

Hi Guys,

Just ran the “Common Port” test using Gibson Research Corporation at GRC | ShieldsUP! — Internet Vulnerability Profiling  , but failed with the following result which is shown as below.

I am using CIS with Windows XP Home Edition behind ASUS WL-520GU router; and did not modify or change any rule in CIS nor router.

Does anyone have the same experience? Any help or suggest is highly appreciated, thanks a lot!

GRC Port Authority Report created on UTC: 2009-02-09 at 08:41:16

Results from scan of ports: 0, 21-23, 25, 79, 80, 110, 113,
119, 135, 139, 143, 389, 443, 445,
1002, 1024-1030, 1720, 5000

0 Ports Open
1 Ports Closed

25 Ports Stealth

26 Ports Tested

NO PORTS were found to be OPEN.

The port found to be CLOSED was: 21

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.

#2

Hello JoH,

This scan result is showing your Routers config because that’s listening to the address GRC is scanning.
Looks like your router has send a TCP RST packet to GRC for accessing the ftp port of it.

From what i have read on other forums it looks like it’s a “default” setting, i guess you have to go and look for some firewall option on the external interface, or maybe disable it’s internal ftp service ?

#3

Hello Ronny,

Thank you for your time and suggestion!

Will check again the router configuration if “port 21” is closed or listening; and of course work on the external interface. Hoping good news will be posted soon.

Thanks again!