Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 296

Parameters sequencenumber deny permit ip-protocolnumber icmp ip tcp udp source mask any host ip-address operator port port Enter a number from 0 to 4294967290. Enter the keyword deny to configure a filter to drop packets meeting this condition. Enter the keyword permit to configure a filter to forward packets meeting this criteria. Enter a number from 0 to 255 to filter based on the protocol identified in the IP protocol header. Enter the keyword icmp to configure an ICMP access list filter. Enter the keyword ip to configure a generic IP access list. The keyword ip specifies that the access list permits all IP protocols. Enter the keyword tcp to configure a TCP access list filter. Enter the keyword udp to configure a UDP access list filter. Enter an IP address in dotted decimal format of the network from which the packet was received. (OPTIONAL) 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. Enter the keyword any to specify that all routes are subject to the filter. Enter the keyword host and then enter the IP address to specify a host IP address or hostname. (OPTIONAL) Enter one of the following logical operands: • 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.) (OPTIONAL) 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 296 Access Control Lists (ACL)