by Vivek Gite on November 14, 2008 · 1 comment
I was wondering why I was getting so much less spam since last two or three days. Now I know the answer. This is a great example of journalism – as the Washington Post ‘Security Fix’ Blogger Brian managed to shut down McColo, a US-based hosting provider responsible for 75% worldwide spam.
By default when you add new user to system (/etc/passwd file) it grant shell access. If you are creating new users for POP3 or SMTP (mail server) or FTP then you do not need to grant shell access to a user. Remember as soon as you add a user he/she can login via telnet or [...]
