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CHAPTER 16: ADVANCED CONFIGURATION
Set the SNMP Manager v3 Username field:
config --set="config.system.snmp.username3=username"
Set the SNMP Manager v3 Auth. Protocol and password fields:
config –set="config.system.snmp.authprotocol3=SHA"
or
config --set="config.system.snmp.authprotocol3=MD5"
config --set="config.system.snmp.authpassword3=password 1"
To set the SNMP Manager v3 Privacy Protocol and password fields:
config –set="config.system.snmp.privprotocol3=AES"
or
config –set="config.system.snmp.privprotocol3=DES"
config --set="config.system.snmp.privpassword3=password 2"
Once the fields are set, apply the configuration with the following command:
config --run snmp
You can add a third or more SNMP servers by incrementing the 2 in the above commands. For example, config.system.snmp.
protocol3, config.system.snmp.address3, etc.
16.6 SECURE SHELL (SSH) PUBLIC KEY AUTHENTICATION
This section covers the generation of public and private keys in a Linux and Windows environment and configuring SSH for public
key authentication. The steps to use in a Clustering environment are:
generate a new public and private key pair.
upload the keys to the master and to each slave console server.
fingerprint each connection to validate.
16.6.1 SSH OVERVIEW
Popular TCP/IP applications such as telnet, rlogin, ftp, and others transmit their passwords unencrypted. Doing this across pubic
networks like the Internet can have catastrophic consequences. It leaves the door open for eavesdropping, connection hijacking,
and other network-level attacks.
Secure Shell (SSH) is a program to log into another computer over a network, to execute commands in a remote machine, and to
move files from one machine to another. It provides strong authentication and secure communications over insecure channels.
OpenSSH, the de facto open source SSH application, encrypts all traffic (including passwords) to effectively eliminate these risks.
Additionally, OpenSSH provides a myriad of secure tunneling capabilities, as well as a variety of authentication methods.
OpenSSH is the port of OpenBSD's excellent OpenSSH[0] to Linux and other versions of Unix. OpenSSH is based on the last free
version of Tatu Ylonen’s sample implementation with all patent-encumbered algorithms removed (to external libraries), all known
security bugs fixed, new features reintroduced and many other clean-ups.
The only changes in the Black Box SSH implementation are:
PAM support.
EGD[1]/PRNGD[2] support and replacements for OpenBSD library functions that are absent from other versions of UNIX.
