How to open DNS port 53 using ufw on Ubuntu/Debian Linux

security - UFW: Allow traffic only from a domain with I don't believe this is possible with ufw.ufw is just a frontend to iptables which also lacks this feature, so one approach would be to create a crontab entry which would periodically run and check if the IP address has changed. If it has then it will update it. You might be tempted to do this: $ iptables -A INPUT -p tcp --src --dport 22 -j ACCEPT networking - How do I with ufw deny all outgoing ports sudo ufw allow 993 sudo ufw allow 6969 sudo ufw allow out 53 sudo ufw allow out http sudo ufw allow out https sudo ufw allow out 465 sudo ufw allow out 587 sudo ufw allow out 993 sudo ufw allow out 6969. This works well with Ubuntu 16.04: Everything works properly. sudo ufw status numbered (the reasoning) [ 1] 993 ALLOW IN Anywhere (thunderbird) How to allow SSH connections from LAN and WAN on different

Nov 01, 2019

How to Configure a Firewall with UFW on Ubuntu 18.04 Install UFW on Ubunutu. UFW comes pre-installed with Ubuntu 18.04. In the unlikely case you do not … How to Enable, Deny, Allow, Delete Rules on Ubuntu UFW Oct 27, 2016

10.04 - How to enable ufw firewall to allow icmp response

UFW is designed to be an easy to use firewall solution. It uses iptables and the underlying technology is pretty robust. Despite being the Uncomplicated FireWall, UFW, it still has a few misnomers and naming conventions might seem not so obvious to the first time user. 10.04 - How to enable ufw firewall to allow icmp response ufw does allow certain icmp traffic by default including icmp echo reply, and this is already configured by default in /etc/ufw/before.rules:-A ufw-before-input -p icmp --icmp-type echo-request -j ACCEPT If your host is not responding to ping, look in this file to make sure the above line is present and if that doesn't work, look at the pinging Installing A Firewall – Basics (Raspberry Pi) – Geek Tech Jun 22, 2019 Ubuntu Firewall (UFW) - Configure, Open/Close Ports Dec 02, 2019