Port not open using VPN

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mpassosbr
Posts: 3
Joined: Thu Aug 09, 2018 1:57 pm

Port not open using VPN

Postby mpassosbr » Thu Aug 09, 2018 2:45 pm

Hi everybody. First message here.

I'm using Transmission 2.94 on MacOS High Sierra.

The thing is: when I'm not connected to my VPN provider (NordVPN), Transmission works pretty fine using any port (in the range recommended).

When I turn on VPN, the port is automatically closed.

I have made everything related to opening the ports, but the problem continues.

UPnP is enabled properly on router (Huawei E5172).

Firewall is off.

Funny fact: using qbittorrent and everything works fine, on or off VPN.

Any thoughts? Thanks a lot.

###############

"Informação" == "Information"
"Depuração" == "Debug"

2018-08-09 13:55:29 +0000 natpmp.c:70 [Informação] Port Forwarding (NAT-PMP): initnatpmp succeeded (0)
2018-08-09 13:55:29 +0000 natpmp.c:70 [Informação] Port Forwarding (NAT-PMP): sendpublicaddressrequest succeeded (2)
2018-08-09 13:55:29 +0000 upnp.c:239 [Depuração] Port Forwarding (UPnP): UPNP_GetValidIGD failed (errno 0 - Undefined error: 0)
2018-08-09 13:55:29 +0000 upnp.c:242 [Depuração] Port Forwarding (UPnP): If your router supports UPnP, please make sure UPnP is enabled!
2018-08-09 13:55:29 +0000 port-forwarding.c:92 [Informação] Port Forwarding: State changed from "Not forwarded" to "Starting"
2018-08-09 13:55:37 +0000 natpmp.c:75 [Depuração] Port Forwarding (NAT-PMP): readnatpmpresponseorretry failed. Natpmp returned -7 (the gateway does not support nat-pmp); errno is 61 (Connection refused)
2018-08-09 13:55:37 +0000 port-forwarding.c:92 [Informação] Port Forwarding: State changed from "Starting" to "???"
2018-08-09 13:55:56 +0000 tr-dht.c:260 [Depuração] DHT: Finished bootstrapping

joaomroenorf
Posts: 1
Joined: Tue Aug 14, 2018 3:15 pm

Re: Port not open using VPN

Postby joaomroenorf » Tue Aug 14, 2018 3:25 pm

Same problem. Curiously I'm from Brazil and I'm using NordVPN.
OS: Debian 9.5 and Transmission-QT 2.92

magma
Posts: 1
Joined: Sat Aug 25, 2018 10:19 pm

VPN Port forward

Postby magma » Sat Aug 25, 2018 11:03 pm

I also took the plunge with a VPN service as well - becoming cost effective and necessary!

My existing port forward scheme for en0 from router did not work for L2TP & utun. I found out that most VPN services close ports with firewall.

I discovered that my service had port 443 open (the only one). Used this for peer port listening (random and UPnP off) and green light! Confirmed with canyouseeme.org that indeed open.

But... Still had a problem. Got error "couldn't bind port to 443 on 10.10.10.2: permissions denied". On MacOS and other UNIX systems, ports below 1024 are not allowed. I am not sure how to allow permissions. Routing table? I could use someone to point me in the right direction - power users out there?

I am sending a request to my VPN provider to determine if they have another open port, or request to open one. You might have a provider that does this!
Maybe this is not a big deal (or not a priority for VPN providers?), I can still connect to peers, but as passive. Still good up and down.

I use Mac 10.12.6 built in LT2P and Tunnelblick for VPN connection and transmission 2.9.4

mpassosbr
Posts: 3
Joined: Thu Aug 09, 2018 1:57 pm

Re: Port not open using VPN

Postby mpassosbr » Fri Aug 31, 2018 4:35 pm

Thank you all for your help.

That's the problem. NordVPN answered me and they said that uploading torrents is not allowed in their system. Here's their answer:

"Additionally, please note that you cannot upload anything through a VPN. It is that way, to prevent any kind of abuses."

So, I'll try a new one. Tried ProtonVPN, but didn't work. Maybe IvacyVNP or CyberGhost, don't know yet.


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