So I got this question from our security people. It seems that after we upgraded to ESXi v6.0 the SNMPD process listens on two UDP ports. The normal fixed port of 161 and a dynamically assigned port.
# esxcli network ip connection list
Proto Recv Q Send Q Local Address Foreign Address State World ID CC Algo World Name
----- ------ ------ --------------------- --------------------- ----------- -------- ------- ---------------
udp 0 0 0.0.0.0:37113 0.0.0.0:0 36222 snmpd
udp 0 0 0.0.0.0:161 0.0.0.0:0 36222 snmpd
Why? What is the second dynamic port used for? We didn't noticed this in ESXi 5.1. I've searched all the documentation I can find and searched online but can't find anything on the this second dynamic port.
Thanks for any info you can give.
