permit tcpConfigure a filter to pass TCP packets that match the filter criteria.Syntax permit tcp {source address mask | any | host ipv6-address} [operator port[port]] {destination address | any | host ipv6-address} [bit] [operator port[port]] [count [byte]] | [log] [monitor]To remove this filter, you have two choices:• Use the no seq sequence-number command if you know the filter’s sequence number.• Use the no permit tcp {source address mask | any | host ipv6-address}{destination address | any | host ipv6-address} command.Parameters source address Enter the IPv6 address of the network or host from which the packets were sent in thex:x:x:x::x format followed by the prefix length in the /x format. The range is /0 to /128.The :: notation specifies successive hexadecimal fields of zero.mask Enter a network mask in /prefix format (/x).any Enter the keyword any to specify that all routes are subject to the filter.host ipv6-address Enter the keyword host followed by the IPv6 address of the host in the x:x:x:x::x format.The :: notation specifies successive hexadecimal fields of zero.operator (OPTIONAL) Enter one of the following logical operand:• eq = equal to• neq = not equal to• gt = greater than• lt = less than• range = inclusive range of ports (you must specify two port for the port parameter.)port port Enter the application layer port number. Enter two port numbers if using the range logicaloperand. The range is 0 to 65535.The following list includes some common TCP port numbers:• 23 = Telnet• 20 and 21 = FTP• 25 = SMTP• 169 = SNMPdestination address Enter the IPv6 address of the network or host to which the packets are sent in thex:x:x:x::x format followed by the prefix length in the /x format. The range is /0 to /128.The :: notation specifies successive hexadecimal fields of zero.bit Enter a flag or combination of bits:• ack: acknowledgement field• fin: finish (no more data from the user)232 Access Control Lists (ACL)
