4 votes

Test which ports are open for outbound connection

The website portquiz.net can be used to check which ports are open for outbound connection, e.g. as follows (I took the command from http://thomasmullaly.com/2013/04/13/outgoing-port-tester/): sudo ...
Franck Dernoncourt's user avatar
4 votes

Outgoing network monitoring and connection blocker (per application) for Windows (8.1)

GlassWire for Windows https://www.glasswire.com has the "Ask to connect" feature you're looking for if you go under its "Firewall" tab to switch it on/off. Unfortunately there is nothing identical to ...
Sean H's user avatar
  • 41
3 votes
Accepted

An Open Source No Root good firewall?

Netguard may be what you're looking for. 1) No root 2) 100% open source 3) Allow/block individual addresses per application (Paid only) 4) Also PCAP logging like Wireshark. There is no other ...
Wally's user avatar
  • 226
3 votes

Ubuntu firewall to block/allow applications

Being searching for a proper GUI firewall for over 5 years and have been using firestarter, ufw, gufw with variable success. Douane was tricky to compile, and on a recent 64bit ubuntu fails to compile....
ccpizza's user avatar
  • 201
2 votes

Alert if a process has uploaded more than X bytes over the last Y seconds

NetWorx (gratis) can do this. In the Notifications settings you can set X data within Y time:
laggingreflex's user avatar
2 votes

Free Windows Firewall Control Alternative

There is still an answer for your question if someone else needs a very slim alternative: You can use the "Windows Firewall Notifier" (https://github.com/wokhansoft/WFN/releases or from several ...
user3471872's user avatar
1 vote
Accepted

Software to block non whitelisted apps from the internet on a scheduled basis

If you mean "free" as in gratis, you might be able to make do with the free version of Cold Turkey. It's an aggressive website blocker, and when I say "aggressive", I mean it: if ...
fogbanksy's user avatar
  • 216
1 vote
Accepted

Block internet access for target applications

Maaybe you would like to consider sandboxie (https://www.sandboxie.com/), which allows you to either virtualize or completely block access to resources like drive, internet etc.
jf1's user avatar
  • 421
1 vote
Accepted

Blocking website access during period, but allowing some sites

In the end I could not figure out how to make pfsense to do what I wanted it to do. Rather than continue to fight it, I ended up buying a router from Gryphon Connect that allows me to do what I wanted ...
Fred's user avatar
  • 121
1 vote

Blocking website access during period, but allowing some sites

You can setup proxy server to restrict access on certain websites.squid is powerful utility that may be helpful for you.You can restrict access on certain time or even you can use regex.Try to install ...
unstable's user avatar
1 vote

Software to block connections before I connect to VPN

All that you have to do is activate NordVPN's kill switch ... From How to enable the NordVPN kill switch : A kill switch is a VPN feature that helps protect your sensitive data in case your VPN ...
Mawg's user avatar
  • 9,033
1 vote

Free complete replacement to Windows Firewall

You could try ZoneAlarm (https://www.zonealarm.com/uk/software/free-firewall/) - using this tutorial it will allow ports to be opened separate to individual programs (http://loadion.com/en/how_to/Open-...
James Wallace's user avatar
1 vote

Firewall for macOS, alternative to Little Snitch

Three popular one Hands Off at $50, Radio Silence at $9, and Murus which offers a free version. Radio Silence offers a free trial. The first 2 were obtained by looking on the website "Alternative to" ...
Natsfan's user avatar
  • 894
1 vote

Outgoing network monitoring and connection blocker (per application) for Windows (8.1)

There is Windows Firewall Notifier (WFN): Another option is SimpleWall: Both are Open Source and Free.
Royi's user avatar
  • 121
1 vote
Accepted

Developing firewall rules for an application

Either Oracle VirtualBox or VMware Workstation or VMware ESXi — You can install the whole OS, and do whatever inside of them. Then monitor what comes out.
cybernard's user avatar
  • 1,726
1 vote

Non subscription based firewalls

Whilst I am unsure if you simply want a free solution, or a one-time purchase of versioning (which is rare), I suggest Comodo Firewall. Comodo Firewall can be installed separately, or as part of the "...
DankyNanky's user avatar
  • 1,512
1 vote

Software/framework in Linux for filtering HTTP traffic?

I think HAProxy is one of your best bets if you want an efficient way to filter traffic with a lot of rules under Linux. Over the years, they say Haproxy has become "de-facto standard opensource load ...
Juanga Covas's user avatar
1 vote

User friendly firewall for Windows 10 to filter/block outgoing traffic?

Maybe NetLimiter: https://www.netlimiter.com/products/nl4 You can block selected applications from connecting to internet.
Eric Pardee's user avatar
1 vote

User friendly firewall for Windows 10 to filter/block outgoing traffic?

I would like to recommend Comodo Firewall. It's a free application that has a very user-friendly interface with advanced options available. This also meets your requirements by allowing you to: Allow/...
Tom's user avatar
  • 7,699
1 vote

GUI - Captive portal with Active directory auth, Content filtering(http+https), Firewall, High Availability

Take a look at Untangle. It should do most of what you need. Note that there is both a paid and a free version of the content filter, and the free version sucks pretty hard. It works, but it's lists ...
Joel Coehoorn's user avatar

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