All Questions
48
questions
0
votes
0
answers
62
views
Specify L2TP VPN to use other port
I am currently at a hotel and they seem to block VPN use. I assume they block it by looking into the port it uses.
I would like to use my company VPN (L2TP). So, I think my best bet is to change the ...
1
vote
1
answer
178
views
Can only access some servers on Linode VLAN
I am running a VLAN applied to a number of servers on Linode. The IPs assigned are 10.0.16.n/24 and are accessed via an OpenVPN server also on the same range.
I have connected to the VPN box from my ...
- 279
0
votes
0
answers
34
views
allow certbot validation and github action connection to digitalocean network firewall
I have this digitalocean droplet that I served as staging instance and has network firewall on it. As it is a staging instance I made it work like a private access only by adding our outline vpn ip on ...
- 101
1
vote
0
answers
489
views
VPN "Kill Switch" Without Hard-Coded IPs
I'm using a popular VPN provider, and I downloaded their OpenVPN configs. In total there's probably >100 different server IPs specified in these configs. Is there a way to configure Ubuntu 22.04 ...
- 11
1
vote
1
answer
707
views
Install outline VPN on a NAT VPS
I'm trying to install outline on my NAT server, but I keep getting this error:
Your Outline Server was installed correctly, but we are not able to connect to it. Most likely this is because your ...
- 11
1
vote
0
answers
3k
views
Your Outline Server was installed correctly, but we are not able to connect to it
I'm trying to config Outline VPN and
I bought a Droplet from Digitalocean with Ubuntu 22.
So, my server generated URI string correctly:
CONGRATULATIONS! Your Outline server is up and running.
To ...
- 111
0
votes
1
answer
566
views
Can't use Firefox on Ubuntu 22.04.1 LTS on Lenovo ThinkPad T460 after installing and uninstalling Proton VPN
I installed ProtonVPN. It worked for a while with Firefox. Then ProtonVPN started to send "not responding" error messages. Though the internet is fully operational on all other devices, ...
- 1
0
votes
1
answer
234
views
UFW Deny out on specific adapter except for LAN traffic, VPN usage
I have two interfaces on a VM, one is traffic going out to web on VPN adapter (proton0) and the other should allow lan traffic (ens160). The rules make sense to me however, I cant ping a lan address ...
- 31
0
votes
0
answers
369
views
How to block traffic when strongswan ikev2 tunnel not established
Strongswan ikev2 network manager plugin network-manager-strongswan was installed on ubuntu 20.04.4 and configured to reconnect automatically. However when VPN is not available I'd like to block all ...
- 101
1
vote
0
answers
213
views
UFW VPN Killswitch doesn´t work, stopps all traffic?
So Nordvpn's new update basically messed up the killswitch and I wanted to set up one myself in order to maintain some basic privacy.
I followed this guide mainly: https://adamtheautomator.com/linux-...
- 11
0
votes
1
answer
354
views
Firewall settings for remote (VPN) subnet?
I have two servers running 18.04.6 desktop.
I am unable to access them from a different subnet (IPsec site to VPN).
It appears to me that the built-in firewall doesn’t allow connections from an ...
0
votes
0
answers
486
views
No internet access without VPN after updating from 18.04 to 20.04
After updating to Ubuntu 20.04 LTS internet stopped working without VPN (I use Cloudflare WARP)
righthaze@desktop ~ ping google.com
PING google.com (216.58.215.110) 56(84) bytes of data.
ping: ...
0
votes
0
answers
41
views
Digital Ocean Ubuntu 18.0.x ssh user@ip_address refused (publickey), now Github Doesn't recognize my computer. What's up? Should I be worried?
I'm using a Digital Ocean Ubuntu 18.0.x instance and connecting from my Ubuntu machine and my Mac. when I ssh user@ip_address I get the message summarized to this will be added to authorized_keys (or ...
0
votes
1
answer
255
views
Unable to establish connection over specific port in devices connected via VPN
I have an Ubuntu virtual machine on the Google Cloud Platform, which runs an OpenVPN server.
In my office, an Ubuntu laptop and a Windows PC act as OpenVPN Clients.
Hence, on the VPN, the following ...
- 103
0
votes
1
answer
664
views
SSH tunneling blocked on 20.04 LTS?
I tried using Hamachi to play with a friend and he told me there was a vpn error next to my name. We could not connect at all and I tried everything to fix it. According to this website https://...
user1194030
1
vote
0
answers
362
views
Wireguard NAT to eth1
I'm trying to do something that I think should be pretty simple. The goal is to have all traffic from my home network go over a Wireguard VPN. I have 3 devices:
ISPs modem/router combo. This should ...
- 111
0
votes
0
answers
970
views
Blocking incoming connections on tun0 using UFW
I am running 16.04 using PIA as my VPN.
I have configured the UFW with the following commands.
sudo ufw default deny outgoing
sudo ufw default deny incoming
sudo ufw deny in on tun0 to any
sudo ufw ...
0
votes
1
answer
6k
views
nordVPN change my firewall settings
I'm concerning about nordVPN and firewall settings. I'm using ubuntu 18.04.4 LTS linux. When I activate nordVPN connection nordVPN package disable my ufw firewall and set its own settings.
I'm not ...
- 1
3
votes
0
answers
2k
views
Ikev2 Strongswan vpn: UFW doesnt route internet traffic
I installed a strongswan ikev2 vpn many times on ubunut without problems. But now on a fresh installed ubuntu server I cant get it to run.
Connect to the vpn does work but I cant get a internet ...
0
votes
1
answer
60
views
Issue with OpenVPN
I'm using the latest build of NordVPN and its last version turned out to be interfering with Firewall, I have ufw installed with simple "Home profile" once I connect to nordvpn the internet is off so ...
- 6,982
0
votes
1
answer
467
views
Can not forward port
I have Ubuntu 18.04.2 with l2tp vpn server, installed by a script. My client runs Windows 7 and connects to this server, internet works perfectly, connection is secured. I need to forward the rdp port ...
2
votes
1
answer
709
views
iptables script breaking internet connection
Looking for some help in where I'm going wrong with an iptables script I've been using for a long time.
I was using this on Ubuntu Server 16.04 without any problems, I've upgraded to 19.04 (yes it's ...
- 21
1
vote
0
answers
593
views
Ubuntu As a Router With IPSec VPN
I have a network setup with a nonconfigurable hardware firewall that connects a local subnet to my servers at a datacenter - we use Microsoft Remote Desktop Servers and have only stupid RD-clients in ...
- 11
0
votes
0
answers
508
views
Allowing VPN traffic trough Ubuntu firewall to connect on Sophos firewall
I need advice to achieve something and I can't find the answer anywhere.
I'm setting up a network in a test lab. I have an Ubuntu machine that runs SNORT as an IDS and it's the only machine that as ...
1
vote
0
answers
590
views
Issues with OpenVPN server accepting connections but not allowing traffic
I have installed Ubuntu 16.04 on a rooted Android box with Linux Deploy to make it a OpenVPN server. I have diligently followed the guide at https://nanashi07.blogspot.com/2017/...id-device.html and ...
- 11
1
vote
1
answer
542
views
Trying to write the perfect VPN kill-switch bash script - have a question about wlp3s0 traffic. Ubuntu 18.04
I recently started using Nordvpn which advertises that it has a kill Switch feature that supposedly will kill all traffic if it loses the VPN connection. After some experimentation I found that the ...
- 267
2
votes
1
answer
5k
views
Is VPN + UFW (As a Killswitch) broken in 18.04?
I have been using Ubuntu (Lubuntu Distro) since 16.04 and have always used a VPN + UFW as a killswitch. It's a very simple thing to do. Especially with the GUFW GUI.
First, you simply deny incoming / ...
- 33
0
votes
1
answer
2k
views
18.04 VPN & UFW firewall issue
Went from 16.04, connecting to VPN fine through Network Manager on Xenial. Under 18.04 it doesn't connect, settings are unchanged. Get the grey icon which vanishes after 10 seconds. I've tried the '...
- 649
1
vote
1
answer
378
views
Help With ufw Trouble?
I am running a vpn on my laptop. To ensure that traffic to and from the internet is only allowed through that vpn, I am running ufw with the following rules:
Status: active
Logging: on (low)
Default: ...
- 11
17
votes
1
answer
44k
views
UFW or IPTables on Ubuntu for OpenVPN?
I'm kind of a newbie in networking and Linux, and I always get confused over whether I should use UFW or IP Tables when restricting my internet connection to only use VPN. Looking around, I find there ...
- 303
0
votes
0
answers
103
views
Ubuntu running as router blocks VPN
I have a Ubuntu server 16.01 running as my router, I followed this tutorial: https://www.youtube.com/watch?v=KXX5gCi0uTo
everything works fine, every machine gets an IP, I have internet connection ...
- 123
0
votes
1
answer
1k
views
Help with iptables rule, how to allow port before REJECT rule?
I'm using iptables to mark packets for vpn user and to do split tunneling. vpn user is tunneled over the tun0 interface, and other users have direct access to internet. Everything works as expected, ...
- 43
2
votes
1
answer
57
views
Phantom Firewalls
First, I should preface this with "I'm not entirely sure this is an Ubuntu question." I work in a central office with many branches connected via VPN. Some of the machines in the branches were ...
- 47
0
votes
1
answer
14k
views
SoftEther VPN Server returning error. "Error occurred. (Error code: 1) Connection to the server failed. Check network connection ...."
This topic had already been discussed in SoftEther VPN Server can't connect during set up.
But cannot find the solution here in my case. Tried commenting still not received a resolution. So ...
- 809
1
vote
1
answer
186
views
Can't connect to my ubuntu box outside my local network (VPN)
I have an Ubuntu 14.04 server running some services on different ports.
I used to be able to connect to it (via SSH, samba, and a couple web servers on different ports) using a VPN.
I'll use ssh as ...
- 123
3
votes
2
answers
16k
views
Can you run a VPN connection over HTTP?
Is it possible to connect to a VPN Server having a tunnel over port 80, thus eliminating all the port blockings of a firewall?
- 173
2
votes
4
answers
5k
views
Adding VPN exception (allow protocol) to UFW firewall rules?
I'm having trouble at work in connecting to the work VPN while Firewall (UFW) is active. When i disable it "sudo ufw disable", there are no problems.
When it's on, when trying to connect I receive ...
- 4,801
0
votes
1
answer
2k
views
Forwarding all Internet Traffic over VPN (PPTP UFW)
I've set up a VPN using the guide here but what I cannot seem to get working is forwarding all my internet traffic over the VPN. I can connect and view the other machines on my network.
I am using ...
- 1
4
votes
1
answer
33k
views
UFW & VPN : How to allow reconnection
Here are the rules of my firewall :
deny outgoing
deny incoming
allow out from any to any on tun0 (alow just the traffic from the VPN)
However, I am forced to disable ufw when I want to start my ...
- 43
1
vote
0
answers
3k
views
iptables: write UDPv4: Operation not permitted (code=1)
I am trying to set up a stateful firewall using iptables. It is for use on my desktop machine.
Below are the contents of my firewall script:
#!/bin/bash
iptables-save > /home/username/iptables....
user392429
20
votes
3
answers
36k
views
Can't connect to PPTP VPN with ufw enabled on Ubuntu 14.04 with kernel 3.18
Suddenly VPN disconnected and can't reconnect no longer on kernel 3.18.1, so I try to install kernel 3.18.2 but my problem still exist. But I can connect to VPN with 3.14 kernel easily.
The output of ...
- 1,587
0
votes
1
answer
6k
views
ufw rules don't block deluge
I'm trying to keep deluged on my headless Ubuntu Server 14.04.1 from functioning when the server isn't connected to a VPN (I know many threads exist discussing the best way to accomplish that; I'm not ...
- 1,044
22
votes
2
answers
56k
views
UFW for OpenVPN
I want to configure ufw (uncomplicated firewall) for OpenVPN.
Connections are only allowed through OpenVPN. Everything else should be blocked. So if OpenVPN is disconnected -> no internet!
I found ...
- 221
1
vote
0
answers
295
views
Configuring ufw and iPredator VPN
I am running a VPN via IPredator on Ubuntu 12.04 Desktop, which works perfectly, when ufw is disabled.
When I enable ufw, I logically cannot establish a connection. IPredator states that I have to ...
- 131
1
vote
1
answer
2k
views
How do I firewall my computer so that only traffic go through the VPN?
I have read "How to configure an Ubuntu server so that all traffic goes through a VPN?" and found it doesn't apply to my case. I am only interested in the client-side of the VPN connection as I am a ...
- 1,917
1
vote
1
answer
3k
views
How to allow PPTP VPN access through APF firewall
I'm attempting to connect to a PPTP VPN. I have opened ports 47 and 1723 in the ingress rules. When APF is turned on, it fails. When APF is turned off, it works fine. I have turned on as many logging ...
- 183
0
votes
2
answers
353
views
How do I get my VPN to work even when my firewall is active?
I have subscribed to a VPN service, but it seems that it does not work whenever my firewall is active.
I have up until now used Firestarter to configure my firewall, but it has no options for ...
- 6,869
2
votes
0
answers
207
views
Should I be using a firewall in Ubuntu? [duplicate]
Possible Duplicate:
Why is the firewall disabled by default?
I installed both gufw and Firestarter but I'm hesitant to activate one of them because I don't know too much about firewalls in ...
- 2,431