topic ASA Version 8.4(3) CLI NAT outside IP to inside websrv in Network Security

ASA Version 8.4(3) CLI NAT outside IP to inside websrv

actemiumparis — Tue, 12 Mar 2019 00:28:35 GMT

-for some reasons we use 192.168.1.0 as outside IP and 10.177.235.0 as inside IP;

-a web server with ip 10.177.235.251 is installed in inside network;

-we need a outside ip (192.168.1.24) to let pc in outside network to access web server;

here are cli commands i used:

interface Vlan1

nameif inside

security-level 100

ip address 10.177.235.54 255.255.255.0

exit

interface Vlan2

nameif outside

security-level 0

ip address 192.168.1.54 255.255.255.0

exit

interface Ethernet0/0

switchport access vlan 2

exit

interface Ethernet0/1

switchport access vlan 2

exit

interface Ethernet0/2

switchport access vlan 2

exit

object network websrv-ins

host 10.177.235.251

nat (inside,outside) static 192.168.1.24

exit

access-list outside-acl permit tcp any host 10.177.235.251 eq 80

access-group outside-acl in int outside

then from a pc outside (ip:192.168.1.251) i tried to load http://192.168.1.24 and i had logs like this:

i'm lost then.

have you any idea about that?

ASA Version 8.4(3) CLI NAT outside IP to inside websrv

Jouni Forss — Tue, 27 Nov 2012 09:56:10 GMT

Hi,

The server in the INSIDE network isnt responding to the OUTSIDE host when it tries to open/form the TCP connection. Either something at the server side is blocking the connection or the server doesnt have correct routing towards the network 192.168.1.0/24

The Firewall configuration seems fine though.

Is the server directly connected to the ASA? If yes, does the server have the correct default gateway (= ASA Vlan1 interface IP)

- Jouni

ASA Version 8.4(3) CLI NAT outside IP to inside websrv

actemiumparis — Tue, 27 Nov 2012 10:19:03 GMT

thank JouniForss! with gateway of 10.177.235.54 everything works fin!

ASA Version 8.4(3) CLI NAT outside IP to inside websrv

Jouni Forss — Tue, 27 Nov 2012 10:20:36 GMT

Hi,

Please rate and mark the question as answered

- Jouni