Setup Guide

seq 25 deny ip host 10.5.0.0 any log
Dell(config-std-nacl)#
To delete a lter, use the no seq sequence-number command in IP ACCESS LIST mode.
Conguring a Standard IP ACL Filter
If you are creating a standard ACL with only one or two lters, you can let the system assign a sequence number based on the order in
which the lters are congured. The software assigns lters in multiples of ve.
1 Congure a standard IP ACL and assign it a unique name.
CONFIGURATION mode
ip access-list standard access-list-name
2 Congure a drop or forward IP ACL lter.
CONFIG-STD-NACL mode
{deny | permit} {source [mask] | any | host ip-address} [count [byte]] [order] [fragments]
When you use the log keyword, the CP logs details about the packets that match. Depending on how many packets match the log entry
and at what rate, the CP may become busy as it has to log these packets’ details.
The following example shows a standard IP ACL in which the system assigns the sequence numbers. The lters were assigned sequence
numbers based on the order in which they were congured (for example, the rst lter was given the lowest sequence number). The show
config
command in IP ACCESS LIST mode displays the two lters with the sequence numbers 5 and 10.
Examples of Viewing Filter Sequence Standard ACLs
The following example shows viewing a lter sequence for a specied standard ACL.
Dell(config-route-map)#ip access standard kigali
Dell(config-std-nacl)#permit 10.1.0.0/16
Dell(config-std-nacl)#show config
!
ip access-list standard kigali
seq 5 permit 10.1.0.0/16 seq 10 deny tcp any any eq 111
Dell(config-std-nacl)#
To view all congured IP ACLs, use the show ip accounting access-list command in EXEC Privilege mode.
Dell#show ip accounting access example interface gig 4/12
Extended IP access list example
seq 10 deny tcp any any eq 111
seq 15 deny udp any any eq 111
seq 20 deny udp any any eq 2049
seq 25 deny udp any any eq 31337
seq 30 deny tcp any any range 12345 12346
seq 35 permit udp host 10.21.126.225 10.4.5.0 /28
seq 40 permit udp host 10.21.126.226 10.4.5.0 /28
seq 45 permit udp 10.8.0.0 /16 10.50.188.118 /31 range 1812 1813
seq 50 permit tcp 10.8.0.0 /16 10.50.188.118 /31 eq 49
seq 55 permit udp 10.15.1.0 /24 10.50.188.118 /31 range 1812 1813
To delete a lter, enter the show config command in IP ACCESS LIST mode and locate the sequence number of the lter you want to
delete. Then use the no seq sequence-number command in IP ACCESS LIST mode.
126
Access Control Lists (ACLs)