lecture notes poi (2)

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Oct 30, 2023

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NS: FW & IPS Standard ACL Standard ACLs are configured based solely on a single criterion, which is the source IP address. Syntax: # access-list [ACL-number|ACL-name ] {permit|deny} { source|any } # ip access-group {ACL-name | ACL-number} { in | out } [ interface ] 52
NS: FW & IPS Examples f Standard ACL Example of a Standard ACL to Permit a Specific IP Address access-list 10 permit 192.168.1.100 Example of a Standard ACL to Deny a Range of IP Addresses: access-list 20 deny 192.168.2.0 0.0.0.255 Example of a Standard ACL to Permit Any IP Address access-list 30 permit any 53
NS: FW & IPS To activate an ACL, it must be applied to an interface Inbound # interface FastEthernet0/0 (LAN Link) # ip access-group 10 in Outbound # interface Serial0/0 (WAN Link) # ip access-group 20 out 54
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NS: FW & IPS Extended Access List More powerful and flexible than standard ACLs Specifies a wider range of conditions to match and filter traffic, such as: source and destination IP addresses port numbers protocol types 55
NS: FW & IPS Syntax and Example Syntax # access-list {number | name} {permit | deny} protocol source eq source-port destination eq destination port Example # access-list Inside-In permit tcp 192.168.1.0 0.0.0.255 eq 8080 host 10.0.0.1 eq 80 56
NS: FW & IPS Extended Access List Demo 57
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