Filter
Top Products
PowerConnect B-Series FCX Configuration Guide 561
53-1002266-01
Configuring extended numbered ACLs
16
The fifth entry denies all OSPF traffic and generates Syslog entries for denied traffic.
The sixth entry permits all packets that are not explicitly denied by the other entries. Without this
entry, the ACL would deny all incoming or outgoing IP traffic on the ports to which you assign the
ACL.
The following commands apply ACL 102 to the incoming traffic on port 1/2 and to the incoming
traffic on port 4/3.
Here is another example of an extended ACL.
The first entry in this ACL denies TCP traffic from the 209.157.21.x network to the 209.157.22.x
network.
The second entry denies all FTP traffic from the 209.157.21.x network to the 209.157.22.x
network.
The third entry denies TCP traffic from the 209.157.21.x network to the 209.157.22.x network, if
the TCP port number of the traffic is less than the well-known TCP port number for Telnet (23), and
if the TCP port is not equal to 5. Thus, TCP packets whose TCP port numbers are 5 or are greater
than 23 are allowed.
The fourth entry denies UDP packets from any source to the 209.157.22.x network, if the UDP port
number from the source network is 5 or 6 and the destination UDP port is 7 or 8.
The fifth entry permits all packets that are not explicitly denied by the other entries. Without this
entry, the ACL would deny all incoming or outgoing IP traffic on the ports to which you assign the
ACL.
The following commands apply ACL 103 to the incoming traffic on ports 2/1 and 2/2.
PowerConnect(config)#int eth 1/2
PowerConnect(config-if-1/2)#ip access-group 102 in
PowerConnect(config-if-1/2)#exit
PowerConnect(config)#int eth 4/3
PowerConnect(config-if-4/3)#ip access-group 102 in
PowerConnect(config)#write memory
PowerConnect(config)#access-list 103 deny tcp 209.157.21.0/24 209.157.22.0/24
PowerConnect(config)#access-list 103 deny tcp 209.157.21.0/24 eq ftp
209.157.22.0/24
PowerConnect(config)#access-list 103 deny tcp 209.157.21.0/24 209.157.22.0/24 lt
telnet neq 5
PowerConnect(config)#access-list 103 deny udp any range 5 6 209.157.22.0/24
PowerConnect(config)#int eth 2/1
PowerConnect(config-if-2/1)#ip access-group 103 in
PowerConnect(config-if-2/1)#exit
PowerConnect(config)#int eth 0/2/2
PowerConnect(config-if-2/2)#ip access-group 103 in
PowerConnect(config)#write memory