comodo and zonealarm are the best for free i think.

Jesus don't use Zonealarm !
Zonealarm was good for WindowsXP since then it is not worthy to use a Software Firewall on the system.

https://en.wikipedia.org/wiki/Comparison_of_firewalls

The windows firewall should be enough, an other approach is a free router with proper router OS installed like PFsense or OpenWrt or the BSD router project

OpenWRT on a TPLink WDR3600 for less buck for the bang !
https://www.youtube.com/results?q=openwrt+tp+link+TL-WDR3600

Best Firewall Ever | LAS | s18e07 Posted on: September 18, 2011

https://translate.google.com/

Networkcheck open ports
http://www.heise.de/security/dienste/Netzwerkcheck-2114.html
Browsercheck
http://www.heise.de/security/dienste/Browsercheck-2107.html
https://www.howsmyssl.com/

windows firewall is terrible and for n00bz who like apple mac`s

if you want to be able to install anything and not care about malware and trojan`s, you need zonealarm

It's false security ... and you can read recommandations, Zonealarm has less than others, it is spamming you with notifications ...

I used it on WinXP back in 2003 - 2008

its the whole point, malware and trojan`s and all other this and that can just to a api hook to any program, dll, memory address and start keylogging and send everything to where ever they like

if you don`t know what the notification is about, you choose no, then look into it when you can be bothered

Software Firewall can be tricked by a Trojan or some Windows special hacks ...

f***ing german
https://www.youtube.com/user/SemperVideo/search?query=firewall

they can`t by pass a firewall, they can crash it, but then you can restart it using powershell

https://technet.microsoft.com/en-us/library/ee176942.aspx

in the long run, your connection is only open for a few seconds at most if you have a ssd

the only thing bad about zonealarm, is it does`nt have the no and look later button on notifications, and a window for them all to be look at later

nor does it have file paths to sort by so you can quickly delete the 10,000 installers and temporary files in the application list

OK, but it is still a software firewall and a running process

so is every firewall unless you get a cisco rackmount DNS server firewall

CISCO routers are bad !

If you have free DSL ISP login choice, use an own router with own Router OS of your choice.

There was an article about router remote logins and default admin passwords for MANY router OS'ses, can't find it !

TechSNAP 233 Posted on: September 24, 2015
https://www.youtube.com/watch?v=Wucyzh2p3NY&t=1h00m55s

Malicious Cisco router backdoor found on 79 more devices, 25 in the US

Intentional Backdoor | TechSNAP 159 Posted on: April 24, 2014

everyone know who cisco are and what they do