Open port 916/udp not closeable

[michansen]

A nmap scan from the Internet (WAN) against a Cisco RV120W shows an open port 916/udp. This port remains open even if one writes an explicit access rule for the firewall.

A quick googling shows that this port is probably used to access the firmware of the router from the outside as well as it has been involved in security problems some years ago. See http://osvdb.org/show/osvdb/34520

How can this port be closed?

Michael

[jeffrrod]

Dear Michael,

Thank you for reaching the Small Business Support Community.

I would first suggest you to upgrade to the latest firmware release version 1.0.4.10;

http://software.cisco.com/download/release.html?mdfid=282981372&softwareid=282487380&release=1.0.4.10

If nmap still shows the port opened, I then suggest you to disable the remote management to determine if this is the root of the problem, then contact the Small Business Support Center to have a TAC engineer figure this out;

https://www.cisco.com/en/US/support/tsd_cisco_small_business_support_center_contacts.html

Please do not hesitate to reach me back if there is anything I may assist you with.

Kind regards,

Jeffrey Rodriguez S. .:|:.:|:.
Cisco Customer Support Engineer

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