Cisco Cisco Web Security Appliance S690 User Guide
22-35
AsyncOS 9.1.1 for Cisco Web Security Appliances User Guide
Chapter 22 Perform System Administration Tasks
Monitoring System Health and Status Using SNMP
•
Back up the following information from the Web Security appliance to a separate machine:
–
System configuration file (with passphrases unmasked).
–
Log files you want to preserve.
–
Reports you want to preserve.
–
Customized end-user notification pages stored on the appliance.
–
PAC files stored on the appliance.
Step 1
Log into the CLI of the appliance you want to revert.
Note
When you run the
revert
command in the next step, several warning prompts are issued. After these
warning prompts are accepted, the revert action takes place immediately. Therefore, do not begin the
reversion process until after you have completed the pre-reversion steps.
reversion process until after you have completed the pre-reversion steps.
Step 2
Enter the
revert
command.
Step 3
Confirm twice that you want to continue with the reversion.
Step 4
Choose one of the available versions to revert to.
The appliance reboots twice.
Note
The reversion process is time-consuming. It may take fifteen to twenty minutes before reversion
is complete and console access to the appliance is available again.
is complete and console access to the appliance is available again.
The appliance should now run using the selected AsyncOS for Web version. You can access the web
interface from a web browser.
interface from a web browser.
Monitoring System Health and Status Using SNMP
The AsyncOS operating system supports system status monitoring via SNMP (Simple Network
Management Protocol). (For more information about SNMP, see RFCs 1065, 1066, and 1067.)
Management Protocol). (For more information about SNMP, see RFCs 1065, 1066, and 1067.)
Please note:
•
SNMP is off by default.
•
SNMP SET operations (configuration) are not implemented.
•
AsyncOS supports SNMPv1, v2, and v3. For more information on SNMPv3, see RFCs 2571-2575.
•
Message authentication and encryption are mandatory when enabling SNMPv3. Passphrases for
authentication and encryption should be different. The encryption algorithm can be AES
(recommended) or DES. The authentication algorithm can be SHA-1 (recommended) or MD5. The
authentication and encryption should be different. The encryption algorithm can be AES
(recommended) or DES. The authentication algorithm can be SHA-1 (recommended) or MD5. The
snmpconfig
command “remembers” your passphrases the next time you run the command.
•
The SNMPv3 username is: v3get.
> snmpwalk -v 3 -l AuthNoPriv -u v3get -a MD5 serv.example.com