With IPHost Network Monitor you can run simple snmp requests against a Netscreen device in your network.
nsVpnMonEntry
NETSCREEN Vpn Mon Entry
A VPN tunnel entry containing attributes for both IKE Phase 1 and Phase 2 as well as associated policy
Back to NETSCREEN-VPN-MON-MIB MIB page.
IPHost Network monitor allows you to monitor nsVpnMonEntry 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.