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Filtered ports on new 2900 router

Yesterday we installed a new Cisco 2911 router running IOS Version 15.0(1)M1.  After installation, I ran a scan against the router on its exposed side and found the following (scan conducted using nmap):

scan.JPG

It is the filtered ports that I am concerned about.  We see ports 135, 139, 445, and 1720 open.  I am not sure why these even show up. 

I would like to be able to run my scan, and not have the scanner pick up these ports at all.   Is there something I can disable on the router that will prevent these ports from showing up?

Thanks

Kevin

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Filtered ports on new 2900 router

There is actually nothing listening on those ports, the scanner just thinks they are filtered. It's a false-positive from nmap.

1 REPLY

Re: Filtered ports on new 2900 router

There is actually nothing listening on those ports, the scanner just thinks they are filtered. It's a false-positive from nmap.

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