Do you need to monitor
servers in a DMZ?
Using the Satellite monitoring service that comes with the Ultra edition makes it much easer.
Distributed monitoring is easy. Check it out :)
Standard Protocol Ports
Standard Protocol Ports would be those ports that are used by a protocol-specific monitor. For example, the Web Page monitor uses HTTP, and therefore (by default)
port 80 to access the remote server. The SMTP server monitor uses a default port of 25, POP3 is a default of port 110, etc. These standard protocol monitors therefore use
the port specified by the relevant standard.
Ports 161 and 162
See below for Windows Firewall rules for Windows 2008 and Windows 2012.
Windows-specific monitors (Event Log monitor, Service monitor, Performance monitor, etc) use standard Windows RPC to access the underlying resources. Windows RPC
uses TCP port 135 by default (although you can change this via tools on the Microsoft website). Because port 135 is targeted by much of the malware and worms on
the Internet, we do not recommend opening that port on an Internet-facing firewall.
Besides port 135, RPC also uses a dynamic port range that gets established between the endpoints. Microsoft has more information, including firewall considerations: