1
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1answer
162 views

How can I disable sending mail through postfix smtp with out auth

I just setup a mail server with postfix 2.6.6 and dovecot. I have the auth related config in main.cf like below: smtpd_tls_cert_file=/etc/httpd/ssl/mail.crt ...
1
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1answer
156 views

Linux restrict a telnet and rs323 user to only run a few programs

I have an embeded linux video server that I just finished. One of the features is that I have a telnet server as well as getty bound to an rs232 port which a user can log into to call a few programs ...
4
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6answers
2k views

How to customize telnet login prompt on linux

When I run login command on debian, I get: hostname login: _ on RHEL5, Solaris or HP-UX I get: login: _ I need to be able to customize login: and password: prompts it on a Linux box. I can ...
1
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1answer
43 views

How can I determine which users are authenticating via ftp or telnet?

I've inherited a system that has both telnet and ftp enabled. As both these send passwords in cleartext I want to disable them. But many users have never changed their ways to use sftp or ssh. And ...
0
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3answers
3k views

How can I use PAM to restrict telnet login by user?

Regrettably I need to enable telnet for a single user on a Linux machine. Everyone else will have to use ssh. How do I configure PAM to restrict which users may login via the telnet server?