Configure ASA \ PIX firewall to allow ssh to a specific device

Posted on 2008-06-13
Last Modified: 2013-11-16
How  do I allow or forward ssh connections to a specific device with the ASA. I have the the following setup. I know how to forward the incomming SSH traffic on the ISA but need help with the ASA. I would like to forward any SSH connections from the external ip to the internal server I need the ASA to get he traffic to the ISA and the ISA will forward to the server. Thanks in advance

*Internet - USER*
*ISA Firewall *
*Server *
Question by:ctna
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
LVL 16

Expert Comment

ID: 21783361
From the command line:

Create the static NAT rule:
static (inside,outside) tcp ssh ssh netmask

Create an ACL to allow access:
access-list outside_access_in (you may need to check the name of the currently used ACL and use that instead - do a show run and see what access-group the outside interface is using) extended permit tcp host (replace with "host x.x.x.x" with "any" if you want anyone to be able to access it) host eq ssh

In summary:
static (inside,outside) tcp ssh ssh netmask
access-list outside_access_in extended permit tcp host host eq ssh


Author Comment

ID: 21792862
If I have another IP do I Add another access list for that IP?

Author Comment

ID: 21792902
Also, if you wanted to direct all traffic to the interface would I add this NAT rule instead? Just want to make sure I understand..

static (inside,outside) netmask
LVL 16

Accepted Solution

btassure earned 500 total points
ID: 21795459
Yes, that rule would NAT ALL traffic to that inside address, you would still need to set up access lists for that as well.

If you wanted another IP to be able to SSH in you have to add it to the ACL you already created, not create a new one.

Author Closing Comment

ID: 31467006
thanks for the help

Featured Post

Retailers - Is your network secure?

With the prevalence of social media & networking tools, for retailers, reputation is critical. Have you considered the impact your network security could have in your customer's experience? Learn more in our Retail Security Resource Kit Today!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Optimal Xbox 360 connectivity requires "OPEN NAT". If you use Juniper Netscreen or SSG firewall products in a home setting, the following steps will allow you get rid of the dreaded warning screen below and achieve the best online gaming environment…
Do you have a windows based Checkpoint SmartCenter for centralized Checkpoint management?  Have you ever backed up the firewall policy residing on the SmartCenter?  If you have then you know the hassles of connecting to the server, doing an upgrade_…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
In this video, viewers are given an introduction to using the Windows 10 Snipping Tool, how to quickly locate it when it's needed and also how make it always available with a single click of a mouse button, by pinning it to the Desktop Task Bar. Int…

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question