Trace packets as they pass through the iptables firewall.
Enforce specific referer header using
Enable debugging log in Nginx to inspect internal behavior and upstream interactions.
Automatically clear GNU Bourne-Again SHell history when you exit a login shell.
Check available security updates for CentOS 7.
Test TLS/SSL encryption anywhere on any port
Determine available authentication methods on the specified OpenSSH server.
Create custom Bourne Again SHell package to disable network redirections and enhance system security.
Find out whether remote port is open using Bourne Again SHell network redirections.
Log every executed command to syslog.