Blocking outgoing traffic doesn't work


empleat

Active member
Local time
12:07 PM
Posts
99
OS
Windows 11 Pro 22H2 22621.963
Hello,

i was testing something it is really strange. I use glasswire, it may be the culprit perhaps?

I blocked all outgoing traffic in firewall, by selecting block for outcoming in correct network profile i use (i checked again). But i have disable all outgoing core networking rules, all apps. Yet i was still able to connect just with DHCP, DNS and remote port 80,443 to internet in browser i didn't allow in firewall outgoing, or i was able to log in and connect on discord. While I disabled firewall in glasswire and rules were deleted from windows firewall, since it does use windows firewall - it doesn't have third party firewall. I know it is instantenous, but i restared pc yet and still i could connect to internet in programs i didn't allow specifically, while all outbound connections were blocked. IT even said so in monitoring. That is odd! EDIT: Apps were also not allowed in app section of firewall!
 

My Computer

System One

  • OS
    Windows 11 Pro 22H2 22621.963
    Computer type
    PC/Desktop
    CPU
    I5 9600 Kf
    Motherboard
    ASUS Z390-i Gaming
    Memory
    G.Skill Trident Z 3200mhz 2x8GB
    Graphics Card(s)
    RTX 3070
    Monitor(s) Displays
    AOC G2590fx
    Screen Resolution
    1920x1080
    Hard Drives
    NVME:
    Adata XPG8200 Pro (1024GB)
    HDD:
    WDC WD40EZRZ-00GXCB0
    PSU
    Corsair RX650RM .2018
    Keyboard
    Cooler master Nova Touch PRO
    Mouse
    MX VERTICAL ADVANCED ERGONOMIC MOUSE
    Browser
    Chrome, Firefox
I am not sure why you need to block all outbound traffic as that is a bit extreme and difficult to manage plus it won't stop a lot of malware as they will simply use common ports and protocols such as 443 that you will likely have allowed.

I can not speak to Glasswire, but in Windows firewall there are different profiles and it may be the case of the wrong profile selected, an app or process re-enabling/adding a nessecary exception or simply another rule with too broad an allow scope.
 

My Computer

System One

  • OS
    Windows 11

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