Someone is currently logged into the APC Management Web Server Please try again

If you get a page saying ‘Someone is currently logged into the APC Management Web Server. Please try again later.’ when trying to connect to a managed APC PDU via the web interface there are a couple of likely causes.

1. Someone is connected via the serial port – this will always override any IP connection.
2. The web interface is ‘stuck’.

If it’s number 1 then you’ll need to find the machine physically connected and disconnect the terminal session, but the fix for number 2 is quite simple.
Just telnet to the device, then log off. This will reset the APC Management Web Server and you’ll be able to log in.

telnet 100.100.10.10

Connecting to 100.100.10.10:23...
Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.

User Name : username
Password  : ************

Switched Rack PDU: Communication Established

------- Control Console -------------------------------------------------------

     1- Device Manager
     2- Network
     3- System
     4- Logout

     <ESC>- Main Menu, <ENTER>- Refresh, <CTRL-L>- Event Log

Type 4 and Hit enter key
> 4
Connection Closed - Bye

Connection closed by foreign host.

Disconnected from remote host(100.100.10.10) at 17:26:07.

==========================

Sorry! Attempt to access restricted file Vtiger CRM 6.2

To fix this

vi /vtlib/vtiger/deprecated.php +441

Add (comment ) //  in front of:
die("sorry! attempt to access restricted file.");

then see what happens.

HOW TO FIX CSF START ERROR “ERROR: FASTTART: (PACKET FILTER IPV4)”

If you get the below error while restarting/starting csf, then you just need to apply below fix.

csf: FASTSTART loading Packet Filter (IPv4)
Error: FASTTART: (Packet Filter IPv4) [] [iptables-restore: line 14 failed]. Try restarting csf with FASTSTART disabled, at line 4285

Edit csf config file located at /etc/csf/csf.conf and disable FASTSTART by editing FASTSTART = “1” to
FASTSTART = “0”.

Once the change is made restart csf by running csf -r, csf should be running fine now.