Table 98 Attack Logs - ZyXEL Communications NBG-460N User Manual

Table 97 Content Filtering Logs (continued)
LOG MESSAGE
%s: Proxy mode
detected
%s
%s:%s
%s(cache hit)
%s:%s(cache hit)
%s: Trusted Web site
%s
Waiting content filter
server timeout
DNS resolving failed
Creating socket failed The NBG460N cannot issue a query because TCP/IP socket creation
Connecting to content
filter server fail
License key is invalid The external content filtering license key is invalid.

Table 98 Attack Logs

LOG MESSAGE
attack [TCP | UDP | IGMP
| ESP | GRE | OSPF]
attack ICMP (type:%d,
code:%d)
land [TCP | UDP | IGMP |
ESP | GRE | OSPF]
land ICMP (type:%d,
code:%d)
ip spoofing - WAN [TCP |
UDP | IGMP | ESP | GRE |
OSPF]
ip spoofing - WAN ICMP
(type:%d, code:%d)
icmp echo: ICMP (type:%d,
code:%d)
syn flood TCP
ports scan TCP
teardrop TCP
NBG460N User's Guide
DESCRIPTION
The router detected proxy mode in the packet.
The content filter server responded that the web site is in the blocked
category list, but it did not return the category type.
The content filter server responded that the web site is in the blocked
category list, and returned the category type.
The system detected that the web site is in the blocked list from the
local cache, but does not know the category type.
The system detected that the web site is in blocked list from the local
cache, and knows the category type.
The web site is in a trusted domain.
When the content filter is not on according to the time schedule or you
didn't select the "Block Matched Web Site" check box, the system
forwards the web content.
The external content filtering server did not respond within the timeout
period.
The NBG460N cannot get the IP address of the external content
filtering via DNS query.
failed, port:port number.
The connection to the external content filtering server failed.
DESCRIPTION
The firewall detected a TCP/UDP/IGMP/ESP/GRE/OSPF attack.
The firewall detected an ICMP attack. For type and code details,
see Table 104 on page
The firewall detected a TCP/UDP/IGMP/ESP/GRE/OSPF land
attack.
The firewall detected an ICMP land attack. For type and code
details, see Table 104 on page
The firewall detected an IP spoofing attack on the WAN port.
The firewall detected an ICMP IP spoofing attack on the WAN
port. For type and code details, see
The firewall detected an ICMP echo attack. For type and code
details, see Table 104 on page
The firewall detected a TCP syn flood attack.
The firewall detected a TCP port scan attack.
The firewall detected a TCP teardrop attack.
Chapter 21 Logs
247.
247.
Table 104 on page
247.
247.
241