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Cisco ASA Firewall rules \NAT\PAT

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Last Modified: 2013-11-16
I need to configure my Cisco ASA to allow port 443 to a web host in the DMZ. How do I redirect traffic sent to the external IP to the host in the DMZ network?

The firewall has three interfaces configured as follows, interface Ethernet0/0 = outside -security-level 0, interface Ethernet0/1 = inside - security-level 100, interface Ethernet0/2 = dmz
 security-level 50

The inside interface is 172.16.1.10, DMZ interface is 192.168.1.1, Outside interface 12.16.14.113, web host 192.168.1.5 .. See below
 

Outside Int
 12.16.14.113
    |
    |

   ASA ------- DMZ INT
             192.168.1.1
    |             |
    |             |
    |           Switch
    |             |
    |             |
    |        Web Host - Prt 443
    |          192.168.1.5
 Inside Int
 172.16.1.10

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Commented:
static (DMZ,outside) tcp 12.16.14.113 443 192.168.1.5 443 netmask 255.255.255.255

and add a rule to your outside ACL:

access-list outside_in extended permit tcp any interface outside eq 443

Good Luck,

3nerds

Author

Commented:
I get the following error, any ideas?

Static PAT using the interface requires the use of the 'interface' keyword instead of the interface IP address
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Commented:
Like this:
static (DMZ,outside) tcp interface 443 192.168.1.5 443 netmask 255.255.255.255


Regards,

3nerds

Author

Commented:
Will this work? The ASA took the commands.... How does the word interface know what NIC to use.. the Outside NIC? I'm a bit confused?? please let me know if the lines below are okay and any explanation would be great!

static (dmz,outside) tcp interface https 192.168.240 https netmask 255.255.255.255
static (dmz,outside) udp interface 1194 192.168.240 1194 netmask 255.255.255.255
static (dmz,outside) tcp interface ssh 192.168.240 ssh netmask 255.255.255.255

Author

Commented:
correction in the config line below

Will this work? The ASA took the commands.... How does the word interface know what NIC to use.. the Outside NIC? I'm a bit confused?? please let me know if the lines below are okay and any explanation would be great!

static (dmz,outside) tcp interface https 192.168.1.5 https netmask 255.255.255.255
static (dmz,outside) udp interface 1194 192.168.1.5 1194 netmask 255.255.255.255
static (dmz,outside) tcp interface ssh 192.168.1.5 ssh netmask 255.255.255.255
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Commented:
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Author

Commented:
Thanks for the help.. makes sense
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