Dell Force10 Z9000 - Page 249

• Use the no permit tcp {source mask | any | host ip-address}
{destination mask | any | host ip-address} command.
Parameters
source Enter the IP address of the network or host from which the packets
were sent.
mask Enter a network mask in /prefix format (/x) or A.B.C.D. The mask,
when specified in A.B.C.D format, may be either contiguous or non-
contiguous.
any Enter the keyword any to specify that all routes are subject to the
filter.
host ip-address Enter the keyword host and then enter the IP address to specify a
host IP address.
bit Enter a flag or combination of bits:
• ack: acknowledgement field
• fin: finish (no more data from the user)
• psh: push function
• rst: reset the connection
• syn: synchronize sequence numbers
• urg: urgent field
dscp Enter the keyword dscp to deny a packet based on the DSCP value.
The range is 0 to 63.
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 ports
for the port parameter)
port port Enter the application layer port number. Enter two port numbers if you
are using the range logical operand. The range is 0 to 65535.
The following list includes some common TCP port numbers:
• 23 = Telnet
• 20 and 21 = FTP
• 25 = SMTP
• 169 = SNMP
destination Enter the IP address of the network or host to which the packets are
sent.
mask Enter a network mask in /prefix format (/x) or A.B.C.D. The mask,
when specified in A.B.C.D format, may be either contiguous or non-
contiguous.
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