Users Guide

Version Description
8.3.1.0 Added the keyword dscp.
8.2.1.0 Allows ACL control of fragmented packets for IP (Layer 3) ACLs.
8.1.1.0 Introduced on the E-Series ExaScale.
7.4.1.0 Added support for non-contiguous mask and added the monitor option.
6.5.1.0 Expanded to include the optional QoS order priority for the ACL entry.
Usage Information
The order option is relevant in the context of the Policy QoS feature only. For more information, refer to
the Quality of Service chapter of the Dell Networking OS Conguration Guide.
The monitor option is relevant in the context of ow-based monitoring only. For more information, refer to
the
Port Monitoring chapter.
deny tcp
Congure a lter that drops transmission control protocol (TCP) packets meeting the lter criteria.
Syntax
deny tcp {source mask | any | host ip-address} [bit] [operator port [port]]
{destination mask | any | host ip-address} [dscp] [bit] [operator port
[port]] [count [byte] [order] [fragments] [no-drop]
To remove this lter, you have two choices:
• Use the no seq sequence-number command if you know the lter’s sequence number.
•
Use the no deny 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 are sent.
mask Enter a network mask in /prex format (/x) or A.B.C.D. The mask, when specied
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 lter.
host ip-address Enter the keyword host then the IP address to specify a host IP address.
dscp Enter this keyword dscp to deny a packet based on the DSCP value. The range is
from 0 to 63.
bit Enter a ag or combination of bits:
• ack: acknowledgement eld
• fin: nish (no more data from the user)
• psh: push function
• rst: reset the connection
• syn: synchronize sequence numbers
• urg: urgent eld
operator (OPTIONAL) Enter one of the following logical operand:
• eq = equal to
• neq = not equal to
Access Control Lists (ACL)
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