Adding or removing a trap receiver

Under Trap Receivers, these configuration options are available:

Add a New Trap Receiver displays the controls to add a new trap receiver.

Receiver specifies the destination IPv4 or IPv6 address or hostname for the SNMP trap.

Destination Port specifies the destination port.

Receiver Type indicates SNMP v1, v2c, or v3 (user-based security model).

Remote User (appears only when you select v3) specifies a remote username.

Authentication (appears only when you select v3) indicates either Supply a Password or Supply a Key to use while authenticating users.

Authentication Protocol (appears only when you select v3) specifies an authentication method from the drop-down list:

• MD5—Specifies the Message-Digest 5 algorithm, a widely used cryptographic hash function with a 128-bit hash value. This is the default value.

• SHA—Specifies the Secure Hash Algorithm, a set of related cryptographic hash functions. SHA is considered to be the successor to MD5.

Password/Password Confirm (appears only when you select v3 and Supply a Password) specifies a password. The password must have a minimum of eight characters. Confirm the password in the Password Confirm text box.

Security Level (appears only when you select v3) determines whether a single atomic message exchange is authenticated. Select one of these levels from the drop-down list:

• No Auth—Doesn’t authenticate packets and doesn’t use privacy. This is the default setting.

• Auth—Authenticates packets but doesn’t use privacy.

• AuthPriv—Authenticates packets using AES 128 and DES to encrypt messages for privacy.

A security level applies to a group, not to an individual user.

Privacy Protocol (appears only when you select v3 and AuthPriv) indictes either the AES or DES protocol from the drop-down list. AES uses the AES128 algorithm.

Privacy (appears only when you select v3 and AuthPriv) indicates Same as Authentication Key, Supply a Password, or Supply a Key to use while authenticating users. The default setting is Same as Authentication Key.

Privacy Password (appears only when you select v3 and Supply a Password) specifies a password. The password must have a minimum of eight characters. Confirm the password in the Privacy Password Confirm text box.

MD5/SHA Key (appears only when you select v3 and Authentication as Supply a Key) specifies a unique authentication key. The key is either a 32-hexadecimal digit MD5 or a 40-hexadecimal digit SHA digest created using md5sum or sha1sum.

Privacy MD5/SHA Key (appears only when you select v3 and Privacy as Supply a Key) specifies the privacy authentication key. The key is either a 32-hexadecimal digit MD5 or a 40-hexadecimal digit SHA digest created using md5sum or sha1sum.

Community (for v1 or v2 trap receivers) specifies the SNMP community name. For example, public or private v3 trap receivers need a remote user with an authentication protocol, a password, and a security level.

Enable Receiver enables the new trap receiver. Clear the check box to disable the receiver.