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Configuration of all kinds of NAT in Phase 18 ASA

2025-01-19 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Network Security >

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Shulou(Shulou.com)06/01 Report--

Objective: 1. Configure dynamic NAT

two。 Configure static NAT

The steps of the experiment:

1. Configure dynamic NAT: [basic configuration has been configured, see ASA configuration experiment report]

Asa (config) # object network ob-in

Asa (config-network-object) # subnet 10.2.2.0 255.255.255.0

Asa (config-network-object) # nat (inside,outside) dynamic200.8.8.3\ 200.8.8.3 cannot be a real device IP

Dynamic NAT port: [configure as above, only need to change one]

Asa (config-network-object) # nat (inside,outside) dynamicinterface\ based on port, NAT is automatically converted to port IP

two。 Configure static NAT:asa (config) # object network ob-out\ configure ob-out

Asa (config-network-object) # host 200.8.8.4

Asa (config) # object network dmz01\ configure the server corresponding to 192.168.3.100 for DMZ01

Asa (config-network-object) # host 192.168.3.100

Asa (config-network-object) # nat (dmz,outside) static ob-out service tcp 80 80

\ configure NAT [TCP80 for HTTP service]

Asa (config) # object network dmz02\ configure the server corresponding to 192.168.3.101 for DMZ02

Asa (config-network-object) # host 192.168.3.101

Asa (config-network-object) # nat (dmz,outside) static ob-out service tcp 21 21

\ configure NAT [TCP21 for FTP service]

Configure ACL:asa (config) # access-list out_to_dmz permit tcp any object dmz01 eq http

\ create ACL and allow access to HTTP

Asa (config) # access-list out_to_dmz permit tcp any object dmz02 eq ftp

\ create ACL and allow access to FTP

Asa (config) # access-group out_to_dmz in interface outside

\ reference ACL

Configuration complete

The result verifies:

View dynamic NAT [client1 can access 200.8.8.2 server]:

View static NAT [client2 can access server3/4]

[because NAT address translation is done, the access address must be the address pool IP:200.8.8.4 corresponding to the server of 192.168.3.100-- > HTTP service]

[because NAT address translation is done, the access address must be the address pool IP:200.8.8.4 corresponding to the server of 192.168.3.101-- > FTP service]

Experimental topology diagram:

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