Cisco ASA 5510 basic configuration to access internet

chperezn
chperezn used Ask the Experts™
on
Hi,

I'm playing around with an ASA 5510 and being a complete Cisco newbie I'm having problems getting it to connect to the internet.
What would a basic nat configuration through asdm look like? Something basic to get internet connection up, then I'll start playing with rules and security.

I have a fixed IP address to the internet.

Thanks
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Most Valuable Expert 2015

Commented:
ASA NAT is dependent upon the operating system.  A change was made in 8.3.

You'll need to identify whether you're running 8.2 and earlier or 8.3 and later.
I'm not a Cisco whiz by any means but my early difficulties came from not setting up the default gateway.  If I recall correctly, the wizard didn't ask for it.
Senior infrastructure engineer
Top Expert 2012
Commented:
Like said before, there were some changes made in 8.3 regarding NAT amongst others.

A basic setup would be something like:

>=8.3

interface GigabitEthernet0/0
 nameif outside
 security-level 0
 ip address 194.1.1.1 255.255.255.252

interface GigabitEthernet0/1
 nameif inside
 security-level 100
 ip address 192.168.1.1 255.255.255.0

object network inside_network
 subnet 192.168.1.0 255.255.255.0

nat (inside,outside) source dynamic inside_network interface

route outside 0.0.0.0 0.0.0.0 194.1.1.2


<8.3

interface GigabitEthernet0/0
 nameif outside
 security-level 0
 ip address 194.1.1.1 255.255.255.252

interface GigabitEthernet0/1
 nameif inside
 security-level 100
 ip address 192.168.1.1 255.255.255.0

global (outside) 1 interface

nat (inside) 1 192.168.1.0 255.255.255.0

route outside 0.0.0.0 0.0.0.0 194.1.1.2


Of course you need to adjust the public and private IPs to your own situation.
This should be enough to get you started.
chpereznIT Manager

Author

Commented:
Hi, sorry for the delay, holiday out here. It's running 8.4 (1)

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