Reset Xerox Spooler

Unplug the machine from power for five minutes.

Plug it back in, but dont turn it on.

  1. Press and hold down the [6] button on the numeric keypad, the [Energy Saver] and the [Stop] buttons
  2. Then, only once you are holding those buttons, power on the machine. Continue to hold down the three buttons until the Touch Screen displays several lines, goes blank and then displays lines again.
  3. Release the buttons. The machine will continue its normal boot up procedure to initialize the spool disk.

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TCP Offload

IF your having slow network on your Centos box best you check for TCP offloading issues.

tcpdump -i eth1 -v -nn| grep -i incorrect


If you get a lot of > Flags [P.], cksum 0xc3d6 (incorrect -> 0xd4eb), seq 7496:7592, ack 9003, win 559, length 96


then try

ethtool -K eth0 rx off tx off sg off tso off ufo off gso off gro off lro off


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Centos password sniffer

Some time you need to see what customers are typing in as their password on the server to find typos.


tcpdump -i eth0 port smtp or port imap or port pop3 -l -A | egrep -i ‘pass=|pwd=|log=|login=|user=|username=|pw=|passw=|passwd=|password=|pass:|user:|userna me:|password:|login:|pass |user ‘

This little command will show you unencrypted passwords on the fly.

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Round cube missing date.

If your “Date” column is blank, or if it’s showing incorrect values, then check your php.ini file, and set the correct timezone for your server.

A sample timezone setting would be:

date.timezone = “Australia/Melbourne”

but can be set to other values, if you know it (google for the proper values)

See this page for a list of all valid php timezones:

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Telstra Call Forward codes

These codes are used for land lines or mobiles  that use Telstra as a provider.

Turn on Call Forward: **code*(phone number to forward calls to, including area code)*10#
Turn off call Forward: ##code**10#
Check if forwarding is on: *#code#

Where: “code” is:
21 for “All calls”
61 for “No answer”
62 for “Unreachable”, ie “out of coverage”
67 for “Busy”

Specifically for “no answer”, you can set the duration your phone rings before it diverts using the the following:
**61*(phone number to forward calls to, including area code)**(number of seconds)#

This was compiled from the following Telstra pages (though I will point out that none of the pages mention the “unreachable” diversion – this oversight should be corrected):




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Block WordPress Attack with CSF

Edit /etc/csf/ and add:

Code: Select all

# wordpress
if (($globlogs{CUSTOM4_LOG}{$lgfile}) and ($line =~ /(\S+).*] "POST \/wp-login\.php.*" 200/)) {
return ("Failed WordPress login from",$1,"wordpress","20","80,443","3600");

Then update /etc/csf/csf.conf and change CUSTOM4_LOG to scan your web server access logs. (If they aren’t doing so already). Eg. for Plesk: /var/www/vhosts/system/*/logs/access_log

That rule will block brute force attacks to wp-login.php for one hour. If you want to block them permanently just change the 3600 to 1.



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