Siemens E-110-I - Manual (Page 62)

SIEMENS ADSL E-110_E-110-I user manual
Firewall, IP Filters and Blocked Protocols
Firewall Configuration
Configuration Manager provides built-in firewall functions, enabling you to protect the system against
denial of service (DoS) attacks and other types of malicious accesses to your LAN. You can also specify how
to monitor attempted attacks, and who should be automatically notified.
1. Select
Services > FireWall. The FireWall Configuration page displays.
2. Configure any of the following settings:
Field Description
Blacklist Status If you want the device to maintain and use a blacklist, click Enable. Click
Disable if you do not want to maintain a list.
Blacklist Period(min) Specifies the number of minutes that a computer's IP address will
remain on the blacklist.
Attack Protection Click Enable to use the built-in firewall protections that prevent the
following common types of attacks:
IP Spoofing: Sending packets over the WAN interface using an
internal LAN IP address as the source address.
Tear Drop: Sending packets that contain overlapping fragments.
Smurf and Fraggle: Sending packets that use the WAN or LAN IP
broadcast address as the source address.
Land Attack: Sending packets that use the same address as the
source and destination address.
Ping of Death: Illegal IP packet length.
DOS Protection Click Enable to use the following denial of service protections:
SYN DoS
ICMP DoS
Per-host DoS protection
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