Skip to main content
17 events
when toggle format what by license comment
Feb 1, 2021 at 15:08 history protected CommunityBot
May 31, 2019 at 18:43 answer added defalt timeline score: 6
Mar 3, 2019 at 3:00 history tweeted twitter.com/StackSecurity/status/1102041034333274112
Jan 12, 2019 at 13:06 comment added brasofilo Yes indeed, I made a WhatsApp call from one mobile to another and both appeared under UPnP listing. And they disappear after finishing the call.
Jan 12, 2019 at 5:52 comment added defalt It's probably using uPnP for external IP Address discovery and dynamic port forwarding. The normal behaviour would be to use STUN protocol to set up VOIP. These are NAT traversal techniques. They might have add uPnP in their latter updates. Good finding. I'll look into this and update this as answer.
Jan 12, 2019 at 5:25 comment added Hadev @brasofilo, I think if you make a call using Whatsapp you will get Whatsapp under your UpnP setting list. I think that's the reason of Whatsapp showing up there, but why and how, I 'm still not sure if it's a normal behavior or not
Jan 12, 2019 at 5:19 comment added Hadev @defalt, actually it is reproduced when I call someone.
Jan 12, 2019 at 1:40 comment added brasofilo I scanned many pages of Google results and the only mention I found to this issue is from 2017 on this SuperUser question (no answers): Are applications able to open ports in modem without permission?
Jan 12, 2019 at 0:56 comment added brasofilo I was just fiddling with my router's UPnP setting up a Plex server and found WhatsApp there. I deactivated/reactivated UPnP and it went away, I regret not having done a screenshot. Will keep an eye on it and report back.
Jan 11, 2019 at 13:09 comment added defalt Can you reproduce this log again by calling someone on your WhatsApp? It's not supposed to use uPnP. WhatsApp uses STUN for establishing VOIP.
Jan 11, 2019 at 2:27 answer added Connor Peoples timeline score: 0
S Jan 10, 2019 at 12:46 history suggested CommunityBot CC BY-SA 4.0
Image size
Jan 10, 2019 at 9:01 comment added paj28 Lots of apps do this to allow peer-to-peer communication
Jan 10, 2019 at 8:18 review Suggested edits
S Jan 10, 2019 at 12:46
Jan 10, 2019 at 8:07 history edited forest CC BY-SA 4.0
removed thanks
Jan 10, 2019 at 8:05 review First posts
Jan 10, 2019 at 10:00
Jan 10, 2019 at 8:04 history asked Hadev CC BY-SA 4.0