With IPHost Network Monitor you can run simple snmp requests against a Netscreen device in your network.
nsConfigDnsRefEnable
NETSCREEN Config Dns Ref Enable
1.3.6.1.4.1.3224.7.3.3
Enable refresh DNS every day.
Back to NETSCREEN-SET-DNS-MIB MIB page.
IPHost Network monitor allows you to monitor nsConfigDnsRefEnable 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.