https://community.hpe.com/t5/server-management-systems/ports-for-snmp-communication-from-through-dmz/m-p/3878738#M23267 SNMP traps are sent to port 162 from random high (&gt;1024) port. So you'd have to allow traffic destined to port 162 of your SIM server from any port of your system(s) in the DMZ. Wed, 11 Oct 2006 16:16:14 GMT Steve Bunten 2006-10-11T16:16:14Z https://community.hpe.com/t5/server-management-systems/ports-for-snmp-communication-from-through-dmz/m-p/3878737#M23266 I have an AlphaServer running Insight Management Agents for OpenVMS 3.4 which resides in a DMZ network. The SIM server is in a non-DMZ network. What ports need to be opened to allow proper communication from the AlphaServer in the DMZ to the SIM server? The system disk on the AlphaServer ran out of space and I did not receive any SNMP alerts.<BR /><BR />Thanks. Wed, 11 Oct 2006 16:06:37 GMT https://community.hpe.com/t5/server-management-systems/ports-for-snmp-communication-from-through-dmz/m-p/3878737#M23266 Chris Martin_12 2006-10-11T16:06:37Z https://community.hpe.com/t5/server-management-systems/ports-for-snmp-communication-from-through-dmz/m-p/3878738#M23267 SNMP traps are sent to port 162 from random high (&gt;1024) port. So you'd have to allow traffic destined to port 162 of your SIM server from any port of your system(s) in the DMZ. Wed, 11 Oct 2006 16:16:14 GMT https://community.hpe.com/t5/server-management-systems/ports-for-snmp-communication-from-through-dmz/m-p/3878738#M23267 Steve Bunten 2006-10-11T16:16:14Z https://community.hpe.com/t5/server-management-systems/ports-for-snmp-communication-from-through-dmz/m-p/3878739#M23268 thanks! Thu, 12 Oct 2006 06:35:08 GMT https://community.hpe.com/t5/server-management-systems/ports-for-snmp-communication-from-through-dmz/m-p/3878739#M23268 Chris Martin_12 2006-10-12T06:35:08Z