ZyXEL Communications PRESTIGE 653HX User Manual page 545

LOG MESSAGE
Out of order TCP
handshake packet
blocked (Protocol)
Unsupported/out-of-
order ICMP (Protocol)
Router reply ICMP
packet
Remote access denied
LOG MESSAGE
Firewall sent TCP
reset packets
TYPE CODE
0
0
3
0
1
2
3
Log Descriptions
Chart K-5 Access Logs
The router blocked a TCP handshake packet that came out of the
proper order
The Prestige generates this log after it drops an ICMP packet due to
one of the following two reasons:
1. The Prestige does not support the ICMP packet's protocol.
2. The ICMP packet is an echo reply for which there was no
corresponding echo request.
The router sent an ICMP response packet. This packet automatically
bypasses the firewall.
The router blocked a remote access attempt.
Chart K-6 TCP Reset Logs
The firewall sent out TCP reset packets.
Chart K-7 ICMP Notes
Echo Reply
Echo reply message
Destination Unreachable
Net unreachable
Host unreachable
Protocol unreachable
Port unreachable
Prestige 653HWI Series User's Guide
DESCRIPTION
DESCRIPTION
DESCRIPTION
K-5