It supports traffic shaping and anti-spoofing features, and it works with Suricata IPS and Snort. It offers real-time monitoring of connections and bandwidth usage. Vuurmuur Firewall: A powerful firewall solution that can be managed via the Ncurses GUI in console with no X required, and via SSH. It supports different network/firewall zones (public, work, home, etc) to categorize trust levels of network connections and interfaces. The blacklists contain IPs that point to “known bad” computers and servers, including those used for advertising or spyware and those that have been “hacked.” Though there are PeerGuardian firewalls for Mac OS X and Windows, the Linux edition is the only one currently maintained.įirewallD: This is a dynamically-managed firewall solution that’s included in Red Hat Enterprise Linux (RHEL) 7, so changes can be applied without restarting the whole firewall, and it offers integration with other applications. It’s designed for protecting you from aggressive IPs while you use P2P sharing. PeerGuardian Linux: Self proclaimed as a privacy-oriented firewall application, it blocks inbound and outbound connections to hosts specified in large blacklists you can choose from containing thousands or millions of IP ranges. If you’re running something other than Ubuntu, UFW can be easily downloaded via links on their website to packages in repositories from Debian, Mint, openSUSE, Arch, and Salix. However, it still provides the basic inbound and outbound policies and has some great functionality, such as preconfigured rules for various applications and multiple profile support. It was designed to be - well, as the name says - uncomplicated. Gufw Firewall : This is the GUI for the Uncomplicated Firewall (UFW), which Ubuntu uses as its default. It can also perform Internet connection sharing with a built-in DHCP server. You can also view firewall events in real-time and get stats on active network connections, including any traffic routed through the firewall. It has a wizard for initial setup but also allows you to manually create inbound and outbound policies and define a whitelist or blacklist. You can install the fwbuilder on a separate machine and then either manually transfer the configurations or securely deploy via SSH or SCP.įirestarter : A simple but feature-rich GUI that you’d install on the server or workstation you’d like to manage the IPTables firewall. ![]() fwbuilder uses objects and functionality like drag-and-drop and search-and-replace to help ease configurations. Let’s look at some of the most powerful yet easy-to-use options available.įirewall Builder (fwbuilder) : This is a flexible and powerful tool that allows you to build firewall configurations and policies for multiple firewalls/machines based on iptables, ipfilter, OpenBSD pf, Cisco ASA & PIX, or Cisco FWSM. The good news, however, is that there are many graphical user interfaces (GUIs) you can use with Linux. Given there’s only a native command-line interface (CLI) for the two, though, there can be a learning curve. Join the nixCraft community via RSS Feed, Email Newsletter or follow on Twitter.As you may know, IPtables and NetFilter combine to make the most popular firewall solution in Linux. He wrote more than 7k+ posts and helped numerous readers to master IT topics. Vivek Gite is the founder of nixCraft, the oldest running blog about Linux and open source. Table, the main author of Firewall Builder. conf file, we see PF implementation of the same policy rules (this is just a fragment with first few rules): # Tables: (2) For PF fwbuilder generates two files for each member firewall. After the cluster is switched to “PF”, the list consists only of “CARP” and “None” as shown in Figure 28:įigure 28. Failover protocol choices for PF/OpenBSDįigure 30. “CARP” was not in the list because it is not available on Linux. While cluster was set up as “iptables”, possible choices of failover protocols were “heartbeat”, “VRRP”, “OpenAIS” and “None”. List of available protocols depends on the firewall platform chosen in the parent cluster object. ![]() The protocol is configured in the failover group object. ![]() To switch to OpenBSD from Linux we need to change failover protocol from heartbeat to CARP as well. This should fix the status of both members in the failover group dialog. They should match exactly, so we have to reconfigure the cluster object to platform “PF” and host OS “OpenBSD” as well. Failover group indicates that the cluster configuration does not match membersįailover group declares status of both members “Invalid”, this is because the platform and host OS of members do not match configuration of the cluster object anymore.
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