ZyXEL NBG-460N User Guide - Page 263
Table 93, Table 94, Table 92
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Chapter 21 Logs Table 92 TCP Reset Logs (continued) LOG MESSAGE DESCRIPTION Firewall session time out, sent TCP RST The router sent a TCP reset packet when a dynamic firewall session timed out. The default timeout values are as follows: ICMP idle timeout: 3 minutes UDP idle timeout: 3 minutes TCP connection (three way handshaking) timeout: 270 seconds TCP FIN-wait timeout: 2 MSL (Maximum Segment Lifetime set in the TCP header). TCP idle (established) timeout (s): 150 minutes Exceed MAX incomplete, sent TCP RST Access block, sent TCP RST TCP reset timeout: 10 seconds 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". 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 93 Packet Filter Logs LOG MESSAGE [TCP | UDP | ICMP | IGMP | Generic] packet filter matched (set:%d, rule:%d) DESCRIPTION Attempted access matched a configured filter rule (denoted by its set and rule number) and was blocked or forwarded according to the rule. Table 94 ICMP Logs LOG MESSAGE Firewall default policy: ICMP , , Firewall rule [NOT] match: ICMP , , , DESCRIPTION ICMP access matched the default policy and was blocked or forwarded according to the user's setting. For type and code details, see Table 105 on page 272. ICMP access matched (or didn't match) a firewall rule (denoted by its number) and was blocked or forwarded according to the rule. For type and code details, see Table 105 on page 272. NBG-460N User's Guide 263