Secure Web/Mail/Database with certificate
Web/Mail/Database can use the same certificate to allow its client to connect to the server. Postfix: [crayon-686e1dda39783678634508/] Dovecot (POP3/IMAP server)…
-
-
Ubuntu: cp copy overwrite without prompting
when you run: cp -rf /source/* /destination , it always ask you to confirm the overwrite action. Root cause: it’s…
-
Restrict user to FTP only
### Restrict User to FTP Only: A Guide for Enhanced Security and Access Control In any organization or server setup,…
-
Can’t Use apt i.e. /boot is 100% full
NOTE: this is only if you can’t use apt to clean up due to a 100% full /boot 1. Get…
-
Dovecot – Iredmail SSL installation
First of all, we need to order a certificate , this certificate is the same with normal web server certificate.…
-
Kill all close wait process
We have seen many cases where the client didn’t close the connection correctly, the process is stuck at CLOSE_WAIT status,…
-
Auto Restart apache when connection is high
In some situations, our web server receive too many connections. The number is much higher than normal, that could be…
-
Nagios: Add new plugin
Nagios config file is in [crayon-686e1dda3a13a468777037/] Nagios plugin script is in [crayon-686e1dda3a13d247424211/]
-
Relocation subversion
Command: [crayon-686e1dda3a237477307884/]
-
Sendmail – control who can send relay
Sendmail use “access” database to control who can use this email server to send email out. It’s easy, just edit…