Cisco ASA NAT

Maskieren auf ausgehende Interface (Regular Dynamic PAT)

• ciscoasa(config)# object network obj-lan
• ciscoasa(config-network-object)# subnet 172.18.122.0 255.255.255.0
• ciscoasa(config-network-object)# nat (if-inside,if-outside) dynamic interface

Portforwarding auf internen Bastion Host

Webserver

• ciscoasa(config)# object network obj-www
• ciscoasa(config-network-object)# host 172.18.122.101
• ciscoasa(config-network-object)# nat (if-inside,if-outside) static interface service tcp www www

Smtp

• ciscoasa(config)# object network obj-smtp
• ciscoasa(config-network-object)# host 172.18.122.101
• ciscoasa(config-network-object)# nat (if-inside,if-outside) static interface service tcp smtp smtp

• ciscoasa(config)# object network obj-www
• ciscoasa(config-network-object)# host 172.18.122.101
• ciscoasa(config-network-object)# nat (if-inside,if-outside) static interface service tcp 8472 ssh

ACL zum Portforwarding auf internen Webserver

• ciscoasa(config)# access-list acl-outside extended permit tcp any object obj-bastion eq www
• ciscoasa(config)# access-group acl-outside in interface if-outside

Portforwarding auf Port 8472 zu Port 22 internen

• ciscoasa(config-network-object)# nat (if-inside,if-outside) static interface service tcp 22 8472
• ciscoasa(config)# access-list acl-outside extended permit tcp any object obj-bastion eq 22