Cisco 7609-S Configuration Guide - Page 525
Configuring SSH Access, Using an SSH Client
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Chapter 23 Configuring Management Access Allowing SSH Access Configuring SSH Access To configure SSH access to the FWSM, perform the following steps: Step 1 Step 2 Step 3 Step 4 To generate an RSA key pair, which is required for SSH, see the "Generating Key Pairs" section on page 12-4. To identify the IP addresses from which the FWSM accepts connections, enter the following command for each address or subnet: hostname(config)# ssh source_IP_address mask source_interface The FWSM accepts SSH connections from all interfaces, including the one with the lowest security level. (Optional) To set the duration for how long an SSH session can be idle before the FWSM disconnects the session, enter the following command: hostname(config)# ssh timeout minutes Set the timeout from 1 to 60 minutes. The default is 5 minutes. The default duration is too short in most cases and should be increased until all pre-production testing and troubleshooting has been completed. (Optional) To restrict the version of SSH accepted by the FWSM, enter the following command. By default, the FWSM accepts both versions. hostname(config)# ssh version {1 | 2) For example, to generate RSA keys and let a host on the inside interface with an address of 192.168.1.2 access the FWSM, enter the following command: hostname(config)# crypto key generate rsa modulus 1024 hostname(config)# write mem hostname(config)# ssh 192.168.1.2 255.255.255.255 inside hostname(config)# ssh 192.168.1.2 255.255.255.255 inside hostname(config)# ssh timeout 30 To allow all users on the 192.168.3.0 network to access the FWSM on the inside interface, the following command: hostname(config)# ssh 192.168.3.0 255.255.255.0 inside Using an SSH Client To gain access to the FWSM console using SSH, at the SSH client enter the username pix and enter the login password set by the password command (see the "Changing the Login Password" section on page 7-1). By default, the password is "cisco." When starting an SSH session, a dot (.) displays on the FWSM console before the SSH user authentication prompt appears, as follows: hostname(config)# . OL-20748-01 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM 23-3
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