All Questions
21
questions
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
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
0
votes
1
answer
657
views
Ubuntu server 22.04 VM Openvpn connection issues
I'm currently working on a homelab project and built a home server using VMWare ESXI 7. On this Hypervisor i run two ubuntu 22.04 server images, one for file sharing and one to serve as a vpn server.
...
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
1
vote
0
answers
127
views
IP Tables - Blocking OpenVPN tun0 from accessing ports 80 & 443 on internal network
Im looking for some help with IP tables.
I want to set a rule that incoming OpenVPN connections cannot use ports 443 and 80 in the internal network. Just to clarify I wish for them to still be able ...
- 11
0
votes
2
answers
1k
views
openvpn and ufw killswitch does not work with dns and automatic ufw update
So basically I simply want a kill switch so connection is only allowed through VPN. Also I would prefer openvpn to keep try reconnecting indefinitely when the connection brakes.
Tha problem is that ...
- 157
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
3
votes
1
answer
2k
views
Should iptables do source NAT on invalid TCP packets?
I stumbled over a peculiar issue:
I have set up an OpenVPN server on Ubuntu 16.04, on my home network, to enable my Android phone and Debian based notebook to send all internet traffic through my ...
- 143
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
0
votes
2
answers
4k
views
DNS Resolution fails with UFW & OpenVPN (ProtonVPN Server)
I have an issue I've been trying to solve for a few days now - I'm working on a relatively fresh installation of Ubuntu 18.04, I enabled UFW and configured it with the following rules.
sudo ufw ...
- 1
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
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
3k
views
Port forwarding from OpenVPN Client to Public Internet
I need to forward port 44444 of my VPN client to the public internet with my public IP on port 44444, how i can do this?
The VPN Server is mine and I have root access.
Example how i can do this?
...
- 21
6
votes
2
answers
6k
views
Unable to open port with ufw
I am trying to open port 1194 for UDP openvpn traffic.
'ufw status' shows it should be open:
$ sudo ufw status
WARN: Duplicate profile 'Apache', using last found
WARN: Duplicate profile 'Apache ...
- 163
3
votes
1
answer
19k
views
UFW setup for OpenVPN server
I set up OpenVPN server on one Ubuntu machine and I am connecting to it via another Ubuntu machine. However, the VPN works only when the server firewall (ufw) is disabled. That is I can connect when ...
- 181
1
vote
1
answer
1k
views
OpenVPN Configuration with ufw eth0 doesn't exist to add it in before.rules
in this guide
I am asked to edit /etc/ufw/before.rules and add:
# START OPENVPN RULES
# NAT table rules
*nat
:POSTROUTING ACCEPT [0:0]
# Allow traffic from OpenVPN client to eth0
-A POSTROUTING -s ...
- 121
1
vote
2
answers
2k
views
OpenVPN: Allow access only for local connections (via OpenVPN)
I was recently assigned a task to do set up a secure development environment. I am thinking of doing the following:
Use OpenVPN to connect to the server.
Use firewall rules to block all incoming ...
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
0
votes
1
answer
191
views
Trouble saving iptables
I am having some issues with removing an iptable entry I have entered.
I added
-A PREROUTING -d 95.211.213.149/32 -i venet0 -p tcp -m tcp --dport 443 -j REDIRECT --to-ports 1194
To experiment with ...
2
votes
7
answers
9k
views
How do I open up firewall while keeping it safe?
Since I've installed Firestarter I have encountered connectivity issues that are all resolved by disabling the firewall. I'd prefer to have the firewall running and allow all the traffic I normally ...
- 21.1k