Cisco Cisco IPS 4255 Sensor

To restore your current configuration from a backup file, follow these steps:

Log in to the CLI using an account with administrator privileges.

Back up the current configuration to the remote server.

sensor# copy scp://user@192.0.2.0//configuration/cfg current-config

Password: ********

Warning: Copying over the current configuration may leave the box in an unstable state.

Would you like to copy current-config to backup-config before proceeding? [yes]:

Enter 

 to copy the current configuration to a backup configuration.

cfg            100% |************************************************| 36124       00:00 

Warning: Replacing existing network-settings may leave the box in an unstable state.

Would you like to replace existing network settings 

(host-ipaddress/netmask/gateway/access-list) on sensor before proceeding? [no]: 

sensor#

Enter 

 to retain the currently configured hostname, IP address, subnet mask, management interface, 

and access list. We recommend you retain this information to preserve access to your sensor after the 
rest of the configuration has been restored.

For the procedure for adding trusted hosts, for the CLI refer to 

, for the IDM 

refer to 

, and for the IME refer to 

You must have an active IPS maintenance contract, a Cisco.com password, and an IPS subscription 
service license to download software. You must be logged in to Cisco.com to download software. You 
must have a sensor license to apply signature updates. 

You can find major and minor updates, service packs, signature and signature engine updates, system 
and recovery files, firmware upgrades, and readmes on the Download Software site on Cisco.com. 
Signature updates are posted to Cisco.com approximately every week, more often if needed. Service 
packs are posted to Cisco.com as needed. Major and minor updates are also posted periodically. Check 
Cisco.com regularly for the latest IPS software.

To download software on Cisco.com, follow these steps:

Log in to 

.

From the Support drop-down menu, choose Download Software.

Under Select a Software Product Category, choose Security Software.

Choose Intrusion Prevention System (IPS).

Enter your username and password.