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kridsana's avatar
kridsana
Icon for Cirrocumulus rankCirrocumulus
Oct 26, 2021

Vulnerability scanner scan Virtual server found UDP 161 but there is no vip udp port 161?

Hi   As title, I used ulnerability scanner to scan virtual server IP to found any open port (I have VIP port 443, 22, 80)   result is scanner found UDP port 161 is opened but there is no vi...
application delivery
BIG-IP
LTM
scanner
security
snmp
vulnerability
Daniel_Wolf's avatar
Daniel_Wolf
Icon for MVP rankMVP
Oct 26, 2021

Hi ,

 

are you sure 161/UDP was detected on the IP address of a virtual server? The BIG-IP will not answer on port 161/UPD as long as there is not a listener defined. 

What I think is more likely, is that it was detected on a self IP address. Take a look at K17333, this will explain why a self IP address might be listening on 161/UDP.

 

KR

Daniel