Allied Telesis OmniConnect/ISDN, Руководство пользователя

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OmniConnect / ISDN
User’s Manual Page 51
Part number 613-10787-00
Forward Enabled parameter is left blank, then packets matching the filter criteria are
discarded.
Protocol Type contains the protocol used for this filter. The allowed values are IGNORE, IP,
ICMP, IGMP, GGP, TCP, PUP, and UDP
The TCP Start of Connection (TCPSOC) indicates if the filter is applied to TCP SYN
(connection request) packets. The three allowed options are IGNORE, YES and NO. The
IGNORE option instructs the filter to ignore TCPSOC. The YES option instructs the filter to
match only the initiating packet in a TCP connection. The NO option instructs the filter to
match any TCP packet except the initiating packet in a TCP connection.
ICMP Code has the following options. Echo Reply, Dest Unreachable, Src Quench, Redirect,
Echo Request, Time Exceeded, Parameter Problem, Timestamp Request, Timestamp Reply,
Info Request, Info Reply, Addr Mask Request, Addr Mask Reply, and Ignore
ICMP Codes are defined as follows.
ICMP Codes for Dest Unreachable are Net Unreachable, Host Unreachable, Protocol
Unreachable, Port Unreachable, Fragmentation Needed, Src Route Failed, Dest Net
Unknown, Dest Host Unknown, Src Host Isolated, Comm. Net Prohibited, Comm. Host
Prohibited, Net Unreachable f/TOS, Host Unreachable f/TOS, Ignore.
ICMP Codes for Redirect are Net Redirect, Host Redirect, TOS Net Redirect, TOS Host
Redirect, and Ignore
ICMP Codes for Time Exceeded are TTL CNT Exceeded, TTL Re/Time Exceeded and
Ignore
ICMP Codes for all other ICMP types is None
Source IP Address is the IP address that the filter should check. When this field is set to
0.0.0.0, the source IP address is ignored.