With IPHost Network Monitor you can run simple snmp requests against a Netscreen device in your network.
nsPlyMonPackPerMin
NETSCREEN Ply Monitor Pack Per Minimum
1.3.6.1.4.1.3224.10.2.1.4
Packets go through this policy per minute
Back to NETSCREEN-POLICY-MIB MIB page.
IPHost Network monitor allows you to monitor nsPlyMonPackPerMin on Netscreen device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Netscreen firewalls right now.