Table 38 packet filter logs table 39 icmp logs – ZyXEL Communications ZyXEL ZyWALL 5 User Manual
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ZyWALL 5 User’s Guide
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Appendix Q Log Descriptions
F
or type and code details, see
.
Exceed MAX incomplete,
sent TCP RST
The router sent a TCP reset packet when the number of
incomplete connections (TCP and UDP) exceeded the user-
configured threshold. (Incomplete count is for all TCP and UDP
connections through the firewall.)Note: When the number of
incomplete connections (TCP + UDP) > “Maximum Incomplete
High”, the router sends TCP RST packets for TCP connections
and destroys TOS (firewall dynamic sessions) until incomplete
connections < “Maximum Incomplete Low”.
Access block, sent TCP
RST
The router sends a TCP RST packet and generates this log if you
turn on the firewall TCP reset mechanism (via CI command: "sys
firewall tcprst").
Table 38 Packet Filter Logs
LOG MESSAGE
DESCRIPTION
[ TCP | UDP | ICMP | IGMP |
Generic ] packet filter
matched (set: %d, rule: %d)
Attempted access matched a configured filter rule (denoted by
its set and rule number) and was blocked or forwarded
according to the rule.
Table 39 ICMP Logs
LOG MESSAGE
DESCRIPTION
Firewall default policy: ICMP
ICMP access matched the default policy and was blocked
or forwarded according to the user's setting.
Firewall rule [NOT] match: ICMP
ICMP access matched (or didn’t match) a firewall rule
(denoted by its number) and was blocked or forwarded
according to the rule.
Triangle route packet forwarded:
ICMP
The firewall allowed a triangle route session to pass
through.
Packet without a NAT table entry
blocked: ICMP
The router blocked a packet that didn’t have a
corresponding NAT table entry.
Unsupported/out-of-order ICMP:
ICMP
The firewall does not support this kind of ICMP packets or
the ICMP packets are out of order.
Router reply ICMP packet: ICMP
The router sent an ICMP reply packet to the sender.
Table 37 TCP Reset Logs (continued)
LOG MESSAGE
DESCRIPTION