کانال انجمن کلاد و دوآپس تبریز

sudo apt-mark hold linux-image-$(uname -r)
sudo apt-mark hold linux-headers-$(uname -r)

iftop -B -P -n -i ens192

-l, --list  If no command is specified, list the allowed (and forbidden) commands for the invoking user (or the user specified by the -U option) on the current host.  A longer list format is used if this option is specified multiple times and the security policy supports a verbose output for‐mat.
If a command is specified and is permitted by the security policy, the fully-qualified path to the command is displayed along with any command line arguments.  If a command is specified but not allowed by the policy, sudo will exit with a status value of 1.

CREATE USER 'sammy'@'%' IDENTIFIED BY 'password' WITH MAX_USER_CONNECTIONS 3;
GRANT PROCESS, SELECT on *.* TO 'sammy'@'%';
# GRANT ALL PRIVILEGES ON *.* TO 'sammy' WITH GRANT OPTION;
FLUSH PRIVILEGES;

SELECT user FROM mysql.user;
SHOW GRANTS FOR 'sammy'@'%';
REVOKE SELECT ON *.* FROM 'sammy'@'%';
DROP USER 'sammy'@'%';

iptables -L --line-numbers
iptables -D FORWARD 1

iptables -I DOCKER-USER -s 1.2.3.4 -j DROP

iptables -A INPUT -s <IP_Address> -p tcp --dport ssh -j DROP

ss -s
ss -at '( dport = :22 or sport = :22 )'