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C
ONFIGURING
THE
S
WITCH
2-62
CLI
– This example adds three rules:
1. Accept any incoming packets if the source address is in subnet
10.7.1.x. For example, if the rule is matched; i.e., the rule (10.7.1.0 &
255.255.255.0) equals the masked address (10.7.1.2 & 255.255.255.0),
the packet passes through.
2. Allow TCP packets from class C addresses 192.168.1.0 to any
destination address when set for destination TCP port 80 (i.e., HTTP).
3. Permit all TCP packets from class C addresses 192.168.1.0 with the
TCP control code set to “SYN.”
Console(config-ext-acl)#permit 10.7.1.1 255.255.255.0 any
3-175
Console(config-ext-acl)#permit 192.168.1.0 255.255.255.0 any
destination-port 80
Console(config-ext-acl)#permit tcp 192.168.1.0 255.255.255.0 any
control-flag 2 2
Console(config-std-acl)#
Summary of Contents for 6724AL2
Page 2: ......
Page 404: ...COMMAND LINE INTERFACE 3 216 ...
Page 406: ...TROUBLESHOOTING A 2 ...
Page 418: ...GLOSSARY Glossary 8 ...
Page 422: ...INDEX Index 4 ...
Page 423: ......