To get cacert.pem file
wget https://curl.haxx.se/ca/cacert.pem
Source: https://curl.haxx.se/docs/caextract.html
… Read the restExim flush cache
service exim stop rm -fv /var/spool/exim/db/* service exim start… Read the rest
Dovecot flush cache
doveadm auth cache flush
Flush the authentication cache. By default the cache is flushed for all the users (which can also be done by sending SIGHUP to the auth process). You can also flush the cache for one or more users by providing their usernames.… Read the rest
How to sniff traffic for IP address and port number using tcpdump
To see traffic for IP address over specific port
tcpdump -i eth0 host XX.XX.XX.XX and port 443 -n -s 0 -vvv… Read the rest
cPanel, How to fix “cat: /dev/fd/63: No such file or directory” error
This appears when you run simple cd command via cPanel –> Terminal, for example:
cd public_html cat: /dev/fd/63: No such file or directory
The fix is pretty simple, just suppress output of cd command
Update .bashrc with the following alias:
alias cd='cd &>/dev/null' source .bashrc… Read the rest
How to install Wireshark on Xubuntu
Add the stable PPA, update and install it:
sudo add-apt-repository ppa:wireshark-dev/stable
sudo apt-get update
sudo apt-get install wireshark -y
To run:
sudo wireshark… Read the rest
Bad bots list .htaccess
##### #block bad bots with a 403 ##### SetEnvIfNoCase User-Agent ^$ bad_bot SetEnvIfNoCase User-Agent "360Spider" bad_bot SetEnvIfNoCase User-Agent "80legs" bad_bot SetEnvIfNoCase User-Agent "Abonti" bad_bot SetEnvIfNoCase User-Agent "Aboundex" bad_bot SetEnvIfNoCase User-Agent "^AESOP_com_SpiderMan" bad_bot SetEnvIfNoCase User-Agent "^AIBOT" bad_bot SetEnvIfNoCase User-Agent "AITCSRobot/1.1" bad_bot SetEnvIfNoCase User-Agent "^Alexibot" bad_bot SetEnvIfNoCase User-Agent "Anonymouse.org"… Read the rest
How to know timelife of a process
Fix for Spamd Child Process causing High Server Load
Run repair script
/scripts/autorepair spamd_dbm_fix
And restart mail server
/etc/init.d/exim restart… Read the rest