With IPHost Network Monitor you can run simple snmp requests against a Netscreen device in your network.
nsNatVipServerService
NETSCREEN Nat Vip Server Service
1.3.6.1.4.1.3224.11.3.2.1.3
Service provideing through the VIP.
Back to NETSCREEN-NAT-MIB MIB page.
IPHost Network monitor allows you to monitor nsNatVipServerService on Netscreen device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Netscreen VPN routers right now.