Tagged: iptables


How To Save and Restore Iptables Rules Permanently In Ubuntu, CentOS, Fedora, Debian, Kali, Mint?

Iptables is standard and popular firewall provides by Linux distributions like Ubuntu, CentOS, Fedora, Debian etc. Iptables rules are managed in run time where a lot of rules are added, changed and remove. These changes are temporary changes where only running configuration is changed but do not saved temporarily. In...


How To Start, Stop and Enable, Disable Iptables or Ufw In Ubuntu, Debian, Kali, Mint

Ubuntu is popular Linux distribution used in different enterprise or personal IT environment. Security is important part of the today IT. We can use firewall services like iptables in order to tighten security of our Ubuntu system. In this tutorial we will look how to install, remove, enable, disable, start and...


How To Enable BitTorrent Ports In Linux Firewall?

BitTorrent is distributed file sharing protocol. There are a lot of different type of applications using BitTorrent protocol. There is a lot of advantages using BitTorrent from different points. It saves and balance global download traffic. Accelerates client side download speed. But some times there are port related problems that...


How To Manage Firewall Rules With Iptables In Linux

Firewall is main component for network security. Enterprise firewalls are located between internet and enterprise networks to manage access and other stuff. There are also host firewalls those are very similar with network firewalls but more simple. Iptables is de facto standard firewall for both Linux systems and networks. We...


Iptables Examples

Today we will look usage of iptables which is mostly used firewall application for *nix based operating systems. Iptables hook into kernel and inspect for firewall rules. More detailed info about iptables can get via man pages but we will look mostly used useful examples today. There are tables used...


How To Block Ports With Iptables?

I have some ports open to the whole network. I can not stop services working on these ports. How can I block ports with iptables? To operate with iptables root credentials are needed. Block Incoming Tcp Port 80 In this example we will block port 80 for incoming tcp connections....

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