Categories
SecOps

How to trace packets as they pass through the firewall

Trace packets as they pass through the iptables firewall.

Categories
WebOps

How to enforce specific referer header using nginx

Enforce specific referer header using nginx directives.

How to enable debugging log in nginx

Enable debugging log in Nginx to inspect internal behavior and upstream interactions.

How to clear bash history on logout

Automatically clear GNU Bourne-Again SHell history when you exit a login shell.

How to check available security updates

Check available security updates for CentOS 7.

How to test TLS/SSL encryption anywhere on any port

Test TLS/SSL encryption anywhere on any port

Categories
SysOps

How to determine available authentication methods

Determine available authentication methods on the specified OpenSSH server.

Categories
SysOps

How disable network redirections

Create custom Bourne Again SHell package to disable network redirections and enhance system security.

Categories
Uncategorized

How to find out whether remote port is open using network redirections

Find out whether remote port is open using Bourne Again SHell network redirections.

Categories
SecOps

How to log every executed command

Log every executed command to syslog.