ATL Telecom AM2 User Manual
Page 49
ATL User Guide
AM2 G.SHDSL Modem
49
6
6.5.7.3 ADVANCED FIREWALL SECURITY
The user can determine the security level for special purposes, environments, and applications by configuring
the DoS protection and defining an extra packet filter with higher priority than the default SPI filter. Note that
an improper filter policy may degrade the capability of the firewall and/or even block normal network traffic.
Click Advanced Firewall Security and then press Finish.
A SYN flood attack attempts to slow your network by requesting new connections but not completing the
process to open the connection. Once the buffer for these pending connections is full a server will not accept
any more connections and will be unresponsive.
ICMP Flood: A sender transmits a volume of ICMP request packets to cause all CPU resources to be consumed
serving the phony requests.
UDP Flood: A sender transmits a volume of requests for UDP diagnostic services which cause all CPU resources
to be consumed serving the phony requests.