With IPHost Network Monitor you can run simple snmp requests against a Netscreen device in your network.
nsVpnCertDefCrlUrl
NETSCREEN Vpn Cert Def Crl Url
1.3.6.1.4.1.3224.4.7.1.1.3
URL of CRL.
Back to NETSCREEN-CERTIFICATE-MIB MIB page.
IPHost Network monitor allows you to monitor nsVpnCertDefCrlUrl 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.