Deny Tcp - Dell MXL 10GbE Reference Manual

ACL logging only on ACLs that are applied to ingress interfaces; you cannot enable
logging for ACLs that are associated with egress interfaces.
You can activate flow-based monitoring for a monitoring session by entering the
flow-based enablecommand in the Monitor Session mode. When you enable
this capability, traffic with particular flows that are traversing through the ingress
and egress interfaces are examined and, appropriate ACLs can be applied in both
the ingress and egress direction. Flow-based monitoring conserves bandwidth by
monitoring only specified traffic instead all traffic on the interface. This feature is
particularly useful when looking for malicious traffic. It is available for Layer 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

Configure a filter that drops transmission control protocol (TCP) packets meeting the filter 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]
[log [interval minutes] [threshold-in-msgs [count]] [monitor]
To remove this filter, you have two choices:
•
•
Parameters
source
mask
any
host ip-address
dscp
bit
Access Control Lists (ACL)
Use the no seq sequence-number command if you know the filter's
sequence number.
Use the no deny tcp {source mask | any | host ip-address}
{destination mask | any | host ip-address} command.
Enter the IP address of the network or host from which the
packets are sent.
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 then the IP address to specify a host
IP address.
Enter this keyword dscp to deny a packet based on the
DSCP value. The range is from 0 to 63.
Enter a flag or combination of bits:
• ack: acknowledgement field
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