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Security Command Reference
tcp-ack
Syntax
tcp-ack {true | false}
no tcp-ack
Context
config>system>security>cpm-filter>ip-filter>entry>match
config>system>security>cpm-filter>ipv6-filter>entry>match
Description
This command configures matching on the ACK bit being set or reset in the control bits of the TCP
header of an IP packet as an IP filter match criterion.
The no form of the command removes the criterion from the match entry.
Default
no tcp-ack
Parameters
true — specifies matching on IP packets that have the ACK bit set in the control bits of the TCP
false — specifies matching on IP packets that do not have the ACK bit set in the control bits of
tcp-syn
Syntax
tcp-syn {true | false}
no tcp-syn
Context
config>system>security>cpm-filter>ip-filter>entry>match
config>system>security>cpm-filter>ipv6-filter>entry>match
Description
This command configures matching on the SYN bit being set or reset in the control bits of the TCP
header of an IP packet as an IP filter match criterion.
The SYN bit is normally set when the source of the packet wants to initiate a TCP session with the
specified destination IP address.
The no form of the command removes the criterion from the match entry.
Default
no tcp-syn
Parameters
true — specifies matching on IP packets that have the SYN bit set in the control bits of the TCP
false — specifies matching on IP packets that do not have the SYN bit set in the control bits of the
102
header of an IP packet
the TCP header of the IP packet
header
TCP header
7705 SAR OS System Management Guide
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