Oct 14, 2008 Choose Configuration Properties Certificate Key Pair, click Add and use the default options presented in order to generate the same RSA keys with ASDM. Choose Configuration Properties Device Access Secure Shell in order to use ASDM to specify hosts allowed to connect with SSH and to specify the version and timeout options.
Learning has never been so easy!
This guide will walk you through the basics of hardening SSH access to your Cisco ASA firewall using ASDM. If you're like me, you'd rather have a GUI than spending the day Googling CLI commands.
4 Steps total
Step 1: Login to ASDM
Step 2: Change the default allow SSH version from 1 to 2
Generate Ssh Key Putty
Go to Configuration > Device Management > Management Access > ASDM/HTTPS/Telnet/SSH
Under SSH Settings, change the value of 'Allowed SSH Version(s)' from 1 to 2.
Step 3: Change the default Diffie-Hellman group from 1 to 14
Generate ssh public key fedora hat. And enter: $ ls -al /.ssh# Lists all the files in your.ssh directory, if they existGenerating public/private rsa key pairCheck the directory listing to see if you already have a public SSH key. Open Git Bash, Cygwin, or Terminal, etc.
Under 'Specify the addresses of all hosts/networks which are allowed to access the ASA using ASDM/HTTPS/Telnet/SSH', you should add the static IPs of the devices or servers you wish to access the firewall from.
Click Add on the right.
Select the radio button next to SSH.
Select 'Inside' as the interface.
Enter the static IP of the device/server.
Enter 255.255.255.255 as the subnet mask.
Click OK.
Repeat for all remaining devices/servers or specify any outside IPs which are static that require remote access.
WARNING: If your firewall has 0.0.0.0 'any' enabled by default, make sure you save your changes by adding your static IP first before deleting the 'any' entry. Otherwise, your session will disconnect.
Microsoft project professional 2010 64 bit product key generator. You may repeat the last step for hardening access to ASDM as well.
3 Comments
Cisco Asa Ssh Access
Sonora
alexthompson4 Oct 16, 2018 at 06:51pm
Thank you for the guide! For accessing the ASA through SSH, what devices would you recommend connecting from (a server, etc) from a security standpoint?
Ghost Chili
starg33ker Oct 16, 2018 at 06:56pm
I only connect to the ASA from our Hyper-V host.
Sonora
alexthompson4 Oct 16, 2018 at 07:02pm
That's a good idea! I shall have to work on implementing it at my workplace.