Error Could not get shadow information for NOUSER
Have you ever had the following error popup on your /var/adm/messages:
Oct 8 12:26:14 myserver sshd[29288]: [ID 800047 auth.error] error: Could not get shadow information for NOUSER
It would look like a security incident with the “nouser” system account but not so to be. The error gets written to /var/adm/messages when a user tries to SSH to the server using a user account which doesn’t exist on the system (a typo error can contribute) or on your NIS/NIS+ systems.
So no panic!!!!
How to Install OpenSSH in Sun Solaris 9 (x86)
OpenSSH is a free opensource version of the SSH connectivity tools. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks unlike Telnet,rlogin or ftp where the data is not encrypted and transmitted in plain text. Additionally, OpenSSH provides secure tunneling capabilities and several authentication methods, and supports all SSH protocol versions.
How to Install OpenSSH in Sun Solaris 9 (SPARC)
OpenSSH is a free opensource version of the SSH connectivity tools. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks unlike Telnet,rlogin or ftp where the data is not encrypted and transmitted in plain text. Additionally, OpenSSH provides secure tunneling capabilities and several authentication methods, and supports all SSH protocol versions.
How to Install OpenSSH in Sun Solaris 10 (X86)
OpenSSH is a free opensource version of the SSH connectivity tools. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks unlike Telnet,rlogin or ftp where the data is not encrypted and transmitted in plain text. Additionally, OpenSSH provides secure tunneling capabilities and several authentication methods, and supports all SSH protocol versions.
Solaris 10 is by default installed with SSH server and the clients. However, if you have chosen to ignore SSH at the time of installation or have started the install with a minimal install then you may need to install OpenSSH manually.
How to Install OpenSSH in Sun Solaris 10 (SPARC)
OpenSSH is a free opensource version of the SSH connectivity tools. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks unlike Telnet,rlogin or ftp where the data is not encrypted and transmitted in plain text. Additionally, OpenSSH provides secure tunneling capabilities and several authentication methods, and supports all SSH protocol versions.

