ZyXEL Communications Internet Security Appliance ZyWALL5UTM 4.0 - Manual (Page 422)

ZyWALL 5/35/70 Series User’s Guide
Chapter 26 DNS 422
26.9 Configuring DNS DHCP
Click ADVANCED, DNS and then the DHCP tab to open the DNS DHCP screen shown
next. Use this screen to configure the DNS server information that the ZyWALL sends to its
LAN, DMZ or WLAN DHCP clients.
DNS Cache Entry
Flush Click this button to clear the cache manually. After you flush the cache, the
ZyWALL must query the DNS servers again for any domain names that had
been previously resolved.
Refresh Click this button to reload the cache.
# This is the index number of a record.
Cache Type This displays whether the response for the DNS request is positive or negative.
Domain Name This is the domain name of a host.
IP Address This is the (resolved) IP address of a host. This field displays 0.0.0.0 for
negative DNS resolution entries.
Remaining Time
(sec)
This is the number of seconds left before the DNS resolution entry is discarded
from the cache.
Modify Click the delete icon to remove the DNS resolution entry from the cache.
Table 150 DNS Cache
LABEL DESCRIPTION