Some of those ports are added by software..Equitrac adds an "EQ" port, PSES adds its own port. But, in my experience, standard TCP/IP port has always been a choice along with the other ports. I'm sticking with SNMP, as this is the protocol that gives the printer its ONLINE/OFFLINE Status... This protocol uses UDP port 161, have you looked to see if you are blocking it? Emujo
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