Dell S3100 EMC Command Line Reference Guide for the Series 9.14.2.6 - Page 299
deny tcp (for IPv6 ACLs
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2 and Layer 3 ingress and egress traffic. You may specify traffic using standard or extended access-lists. This mechanism copies all incoming or outgoing packets on one port and forwards (mirrors) them to another port. The source port is the monitored port (MD) and the destination port is the monitoring port (MG). deny tcp (for IPv6 ACLs) Configure a filter that drops TCP packets that match the filter criteria. Syntax deny tcp {source address mask | any | host ipv6-address} [operator port [port]] {destination address | any | host ipv6-address} [bit] [operator port [port]] [ttl operator] [count [byte]] [log [interval minutes] [threshold-in-msgs [count]] [monitor] To remove this filter, you have two choices: • Use the no seq sequence-number command syntax if you know the filter's sequence number • Use the no deny tcp {source address mask | any | host ipv6-address} {destination address | any | host ipv6-address} command Parameters source address 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 then the IP address to specify a host IP address. destination address Enter the IPv6 address of the network or host to which the packets are sent. 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 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 from 0 to 65535. The following list includes some common TCP port numbers: • 23 = Telnet • 20 and 21 = FTP • 25 = SMTP • 169 = SNMP ttl operator Enter the keyword ttl to permit a packet based on the time to live value. The range is from 1 to 255. Enter one of the following logical operand: • eq(equal to) - matches packets that contain a ttl value that is equal to the specified ttl value. • neq(not equal to) - matches packets that contain a ttl value that is not equal to the specified ttl value. Access Control Lists (ACL) 299
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