Zoom Gateway/Router V3 User Manual page 53

IP Spoof
Inspects so-called "trusted" IP addresses to ensure
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legitimacy.
Ping of Death
Prevents oversized ping packet fragments (totaling
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more than 65,536 bytes) from getting through—
which cause the computer to hang or crash.
Land Attack
Guards against attackers who mimic source and
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destination ports and IP addresses, causing infinite
loops and system crashes.
Reassembly
Ensures correct reassembly of datagrams—
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prevents attackers from sending a continuous
stream of identical, invalid datagram fragments that
can cause system state problems.
SYN
Prevents attackers from flooding the system with
(synchronize)
incomplete synchronization connection requests,
Flooding
which can exhaust server resources and cause
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operating system crashes.
ICMP
Keeps route information hidden, ensuring that ICMP
Redirection
messages cannot be compromised, or forged, and
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redirected to the attacker's destination of choice.
Source
Prevents attackers from illegally obtaining network
Routing
data by stipulating that data packets must follow
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strict source routing.
Winnuke
Only applicable to Windows 95, NT, and 3.11
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systems. Prevents OOB (out of band) data from
reaching an IP address, which can cause lost
connections and system crashes.
Chapter 4: Using the V3's Advanced Firewall 53