Firewalls

Tiny Firewall
Free
Tiny Firewall: Security Suite for All Round Protection
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WindowsSpyBlocker
Free
Protect Your PC with WindowsSpyBlocker
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Windows Firewall Control
Free
Smarter Management for Windows Firewall
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GlassWire
Free
GlassWire protects your computer from threats by providing you with visualized data about your network activity. GlassWire notifies you about suspicious hosts, ARP spoofing attacks, odd changes to your computer, new network connections from unknown applications and numerous other security related alerts. The app's Firewall will provide a secure boundary between your computer and the Internet. You can see the data by viewing it from the Firewall tab; it provides information about what applications have accessed the Internet and it can block any that are suspicious, violating your privacy, or wasting your bandwidth. Key Features Include: Protects your computer and privacy by revealing all your Internet connections. Crisp network visualizer. Easy to use interface. Free firewall protection. GlassWire uses limited system resources. Simplified and self-explanatory user interface. Overall, GlassWire is a simple tool for network monitoring that comes with a built-in firewall, designed for allowing/denying Internet access to your apps. Both advanced and novice users will be able to operate GlassWire without any problems due to the crisp interface and the clear manner in which the information is presented.
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NextDNS
Free
NextDNS: Cloud-hosted DNS Service
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Sygate Personal Firewall
Free
Free for personal use, Sygate Personal Firewall provides best of breed security in a user friendly interface, protecting your PC from hackers, trojans and DoS attacks. Features include full-ICS support, protocol driver level protection, enhanced logging, and more. Sygate Personal Firewall delivers unobtrusive, highly configurable, enforceable rule-based security policy by constantly operating in the background of your PC. Policies regarding applications, trusted IP addresses, ports, protocols and scheduling can be customized to support and secure any network configurations or requirements. Designed with high performance in mind, it delivers top-notch security without sacrificing your computing power. Note that from November 30th, 2005 all Sygate consumer firewall products have been discontinued but this versions is available here for free use.
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ZoneAlarm Free Firewall
Free
Reliable free firewall for Windows protection
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Comodo Internet Security
Free
Comodo Internet Security is a free, security app that provides complete protection from virus attacks, Trojans, worms, buffer overflows, zero-day attacks, spyware and hackers. The app is multi faceted and combines powerful Antivirus protection, an enterprise class packet filtering firewall, advanced host intrusion prevention tools, configurable application control and anti-spyware. All in one powerful app. Key Features include: Antivirus: Tracks down and destroy any existing malware hiding in a PC. Anti-Spyware: Detects spyware threats and destroys each infection. Anti-Root-kit: Scans, detects & removes root-kits on your computer. Bot Protection: Prevents malicious software turning your PC into a zombie. Defense+: Protects critical system files and blocks malware before it can install. Auto Sandbox Technology: Runs unknown files in an isolated environment. Memory Firewall: Cutting-edge protection against sophisticated buffer overflow attacks. Anti-Malware: Kills malicious processes before they can infect your system. Overall, Comodo Internet Security features a friendly graphical user interface that can be navigated by users of all levels of expertise. It has a strong, robust firewall, a high quality Antivirus and stacks of other security tools that are all easy to configure; just 'set and forget'.
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Comodo Free Firewall
Free
Comodo Free Firewall is a superb replacement for Windows’ default utility. The interface is modern, sleek and intuitive and easy to navigate. Not only is it pleasing on the eyes, it also provides enhanced protection via a constantly updated cloud database to always keep your system as safe as possible. Key Features include: Fast and hassle-free online experience. Manages traffic on your PC. Blocks all Internet attacks. Secures all connections when you are online. Monitors in/out connections. This free firewall protects your computer from all manner of external threats in an efficient and effective way. It uses something called default deny protection (DDP) to prevent any threats from entering, and affecting your system. It works by using a cross reference system to ensure that whenever unknown software has been introduced to your system, Comodo Free Firewall will cross-reference it with a white-list of over 15 million files and apps to see if it is legitimate. If it isn’t then Comodo Free Firewall will alert you that a possibly malicious file is attempting to access your PC. Overall, Comodo Free Firewall is able to block online threats, providing a solid, strong defence for your system against attacks. It includes a robust browser, virtual desktop and sandboxing system. The only downside is the it flags both good and bad files, which can obviously become quite annoying.
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Sunbelt Personal Firewall
Free
Protect yourself from hackers. Secure your PC with a 100% free firewall download. Sunbelt Personal Firewall (SPF), previously known as Kerio Firewall, was called "our favorite" by PC Magazine. The Windows Firewall (both XP and Vista) is worse than useless, it gives you a false sense of security. Why? It only filters incoming traffic. That means if malware has compromised your PC, it is able to send out all your personal info. That's right; the Windows "firewall" does not stop that! But SPF... Supports Windows XP and Vista Filters both ingoing and outgoing traffic! Keeps hackers out and your private info inside. Works great with VIPRE Antivirus + Antispyware Easy to use and does not slow down your PC!
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