I recently posted an article entitled “Configure Cisco ASA for SBS 2008/2011 Network using ASDM” which uses the GUI, a very lengthy process, but perhaps easier to understand for those not familiar with the Cisco Command Line Interface (CLI) like me.  However, I did promise to also post the handful of necessary commands to achieve the same thing using the command line. Please find the matching commands below using the same options and sample IP’s as in the previous post. You may wish to review the previous article should you require an explanation of why the various command are necessary. Note: this was done using ASA Version 8.2(5).

Basic router configuration; router name, domain, outside/WAN static IP and subnet mask, and management access:

hostname Cisco-ASA5505
domain-name MyDomain.local
Interface vlan2
ip address  123.123.123.123 255.255.255.248
no http 192.168.123.0 255.255.255.0 inside
http 192.168.123.0 255.255.255.0 inside
no telnet 192.168.123.0 255.255.255.0 inside
telnet 192.168.123.0 255.255.255.0 inside
enable password MyPassword

Disable DHCP on the Inside/LAN interface and set inside/LAN IP:

no dhcpd enable inside
Interface vlan1
no ip address
ip address  192.168.123.254 255.255.255.0
same-security-traffic permit inter-interface

Set default gateway on Outside/WAN interface:

route outside 0.0.0.0 0.0.0.0 123.123.123.121 1

Configure port forwarding for port 25 (SMTP/Exchange), port 443 (Https/RWW/RWA/OWA/Sharepoint), and port 987 (Sharepoint):

name 192.168.123.10 SBS-Server
asdm location 192.168.123.10 255.255.255.255 inside

static (inside,outside)  tcp interface 25 192.168.123.10 25 netmask 255.255.255.255 tcp 0 0 udp 0
static (inside,outside)  tcp interface 443 192.168.123.10 443 netmask 255.255.255.255 tcp 0 0 udp 0
static (inside,outside)  tcp interface 987 192.168.123.10 987 netmask 255.255.255.255 tcp 0 0 udp 0

access-list outside_access_in remark Allow SMTP traffic
access-list outside_access_in extended permit tcp any interface outside eq smtp
access-list outside_access_in remark Allow SSL-OWA-RWA Traffic
access-list outside_access_in extended permit tcp any interface outside eq https
access-list outside_access_in remark Allow SharePoint traffic
access-list outside_access_in extended permit tcp any interface outside eq 987
access-group outside_access_in in interface outside

Allow pings from LAN to Internet:

policy-map global_policy
class inspection_default
inspect icmp

Allow Tracert (requires ping policy changes above):

access-list outside_access_in line 3 remark Allow Tracert
access-list outside_access_in line 4 extended permit icmp any any

Save:

write mem

Comments on: "Configure Cisco ASA for SBS 2008/2011 Network using CLI" (2)

  1. Hi,

    When configuring port forwarding, the static command isn’t listed in the CLI menu. Could you clarify this?

    Thank you.

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