Practical tools for server admins
Small, fast utilities that run in your browser. Nothing you type is sent to a server.
iptables Command GeneratorAllow or block a port, limit it to an IP or subnet, and get ufw and firewalld versions. Open a Port on Oracle CloudSecurity list and iptables steps for Ubuntu and Oracle Linux. Save iptables Rules PermanentlyKeep your rules after a reboot on Ubuntu, Debian and RHEL. iptables: command not foundInstall iptables or fix your PATH on Ubuntu, Debian, RHEL and Alpine. iptables Allow SSHAllow SSH safely without locking yourself out. Open Port 80 on UbuntuAllow HTTP with iptables, save it and test it. Allow a Port from One IPRestrict a port to a single IP or subnet.