MegaCli command to locate disk

This is command in megacli linux to blink the disk in order to locate the phisical placement of the storage. Start blinking

Stop blinking

If there is no disk blinked then you may need to power off the…

Read more


DDOS and Flooding Detection Apache Webserver (Updated)

List the the connection status and sort to identify attack source

netstat -ntu | awk ‘{print $5}’ | cut -d: -f1 | sort | uniq -c | sort -n Based on port

Get basic information on which IPs…

Read more


Zimbra Restrict user to send to local domain

This time, it’s about limiting email certain user on Zimbra to only send email to local domain on certain domain. Edit /opt/zimbra/conf/zmconfigd/smtpd_recipient_restrictions.cf and add below line after permit_sasl_authneticated

Edit  /opt/zimbra/conf/zmconfigd.cf file and add line below at postfix groups before…

Read more