Postfix With Dovecot

  Enter the following command to see the FQDN form of your hostname. hostname -f If your CentOS/RHEL server doesn’t […]

Cisco PPTP VPN

R1(config)# conf t R1(config)# username aaron secret MyPassword Now we need to activate aaa new model to expose new commands: […]

UDLD Unidirectional Link Detection

UDLD (unidirectional link detection) is a supplementary protocol to Spanning tree protocol at Data link layer, before introducing UDLD, let’s […]