All Questions
69
questions
0
votes
0
answers
11
views
Forwarding https traffic from openvpn to internal server which has internet access
I am trying to achieve the following behaviour
Client <--> openvpn at 1194 <--> internal server at port 8080 <--> internet
I used iptables prerouting route on nat with DPORT 80 and ...
- 1
0
votes
0
answers
21
views
Route between two network interfaces (one with VPN, the other one served DHCP addresses)
I tried to find an answer to my question, but I've not found anything...If this has been asked and answered I'll be happy with a pointer.
I have a server running Ubuntu 23.10 with two network ...
- 1
0
votes
0
answers
103
views
Simulate an NVA Appliance in Azure that forwards traffic with an Ubuntu VM
In Azure, I have 3 VirtualNetworks, A, B and C. A and B are peered to C.
I have an Ubuntu VM in all 3 of them.
I would like to have the VMs in VirtualNetworks A and B, be able to talk to one another ...
- 101
0
votes
0
answers
183
views
Route traffic from VPN to web proxy
I'm struggling for days to do this:
I've got an Openvpn installed on a ubuntu server, I want this traffic to be routed to a web proxy (socks5), so it will look like this :
Device->VPN->Proxy->...
- 1
0
votes
0
answers
143
views
iptables & ip_forward issue
I am having a very annoying issue and I don't know what's wrong. I also feel like I am very close to having it working, so there must be something obvious I'm doing wrong.
I am trying to connect to my ...
1
vote
0
answers
910
views
How to allow SSH only from WireGuard and one IP
This is production server and I need to add rules very carefully, I don't sure what is correct rule.
Currently my UFW rules allow SSH connection from any IP and from WireGuard, also my own IP (YYY.YYY....
- 13
0
votes
0
answers
54
views
Is it possible to connect a WiFi route to some server and forward every connection to that server?
I'm facing some package loss issues I'm having in my home-network. I'm looking at some log entries and some game reports I've detected, a somewhat strange IP route added, and a snort made me some ...
0
votes
1
answer
879
views
How to forward all or part of openvpn server traffic to another server through SSH tunnel?
I need to route all OpenVPN client traffic from Server A to Server B via SSH tunnel.
Client Server A Server B
------------------- ------...
0
votes
2
answers
785
views
Generate iptables rules while connecting to VPN Server
I'm building a virtual Ubuntu Server(LXC on Proxmox) that shall act as router and tunnel some devices(e.g. AppleTV) of my local network through a VPN (expressVPN).
Connecting and routing to different ...
- 1
0
votes
1
answer
59
views
Setup additional interface
I have a dedicated server with Ubuntu Server 18.04. I need an additional IP-address so I leased a cheap VDS, then I've setup pptpd on VDS and pptp on dedicated server. Then I configured a VPN-...
- 127
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
2k
views
How to forward traffic on various ports through a wireguard vpn using iptables/ufw
I have 2 machines running ubuntu 22.04, we will call them server and proxy. The proxy is a vps with an static public ip, and the server is running behind a nat. I want to route all traffic on some ...
- 101
0
votes
0
answers
87
views
help with dns name conflict vpn and docker
I need to access an url via VPN, (estrelaoriente.com)
but seems it is conflicting with an docker route (docker.amazee.io):
~$ ping estrelaoriente.com
PING estrelaoriente.com.docker.amazee.io (127.0.0....
0
votes
0
answers
541
views
iptables says it should drop, but I can still connect
Ubuntu 20.04
I use NordVPN and it changes my iptables rules when I connect. Occasionally, I have to delete some rules and create new ones so I can still access other machines on my local network.
This ...
- 131
0
votes
1
answer
3k
views
OpenVPN Server unable to ping device connected to client laptop via ethernet
I have an OpenVPN Server on a linux virtual machine (Google Cloud Compute Engine instance running Ubuntu 20.04).
I have a linux laptop in my office (running Ubuntu 20.04). It is connected wirelessly ...
- 103
0
votes
1
answer
189
views
Is it correct that a torrent gets downloaded via enp3s0 (eth0) even if outgoing traffic is restricted to a VPN on tun0?
I modified my iptables according to the answer from Musclehead here so that my transmission-daemon can just send outgoing traffic to tun0 (which is a VPN).
(Hint: My eth0 is called enp3s0.)
Now, if I ...
- 2,059
0
votes
1
answer
257
views
Can someone explain these rules for a specific user and a VPN in iptables?
I used a script from here to setup rules that make sure user transmission-daemon can only send traffic via the VPN i use.
At least that's what the author says. I have troubles understanding the ...
- 2,059
0
votes
2
answers
749
views
L2TP VPN connected but no traffic / not working
I'm using Kubuntu 20.04 and having issues with L2TP VPN
By the way it was working fine up until today, would connect and all traffic was fine. Now the VPN connects but I cant do anything.. even www....
- 101
0
votes
1
answer
205
views
VPN routing does not work
I have a problem setting up wireguard.
My problem is packets from anywhere but the wireguard hos is not sent out on the wg0 interface.
I run wg0 with 192.168.96.1/24
ip forwarding is enabled. I can ...
- 1
0
votes
0
answers
412
views
How to open port in client side in windows using my own pptp vpn server on linux?
I had been setup my own pptpd server in my vultr ubuntu server and i connect on it using my client built in in windows and i success to access the internet and when i check my ip i see the vps ip ...
- 47
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
0
votes
1
answer
505
views
IPSEC site-to-site overlaping networks
we have two sides connected over ipsec using strongswan. both machines ubuntu 16.04 servers. the issue is both end subnets are overlapping. we have tried all possible iptables scenarios to map ...
- 49
1
vote
0
answers
139
views
Linux gateway is forwarding traffic to its own gateway when tunnel is down
I have a box (192.168.1.2) that connects to a VPN creating a tunnel. This box has a 192.168.1.1 default gateway which is my router's internal address. The rest of my network has 192.168.1.2 (...
- 11
2
votes
2
answers
976
views
IP Table rules to swap traffic on two interfaces
The Issue:
I have two interfaces, vlan.202 and tap0. vlan.202 is my VLAN for VPN clients and originally I just used to tunnel all my VPN clients onto a random subnet and have them share my host IP, ...
1
vote
0
answers
165
views
How can I ensure that all of my internet traffic uses my OpenVPN, even after reboot?
I would like to allow my PC to communicate to all LAN devices (10.0.0.0/24) but only allow traffic outside of my network to use my ExpressVPN connection.
ExpressVPN does not provide a list of IPs so ...
- 121
0
votes
1
answer
126
views
How to forward web port without losing http access?
I have configures NextCloudPi on a Raspberry Pi at home and it works quite well. However, the NAT config with the adsl modem is instable. Therefore, I configured a Tinc VPN server on DigitalOcean (the ...
- 659
2
votes
2
answers
17k
views
Fatal: can't open lock file /run/xtables.lock: Permission denied
I have just subscribed for a VPN service and while I did notice that at times the connection drops, I looked around for ways to setup a kill-switch in Ubuntu.
I did follow the instructions at https://...
- 21
0
votes
0
answers
112
views
How to set iptables rules that won't get pushed down the list
I am trying to setup iptables rules that will allow OpenVPN and Wireguard traffic on two servers. One of the servers also runs Yunohost and the other one, Cloudron.
The problem is that my defined ...
- 1
1
vote
0
answers
767
views
Port Forwarding between 2 hosts in VPN
I'm having some problems while trying to set port forwarding rules on a Ubuntu machine. I'll explain my situation..
I have a Raspberry in my local home's network and I have a webserver installed on ...
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
1
answer
1k
views
Allowing access to my server's UDP ports when the server is connected to OpenVPN
I've recently bought some cheap vps, and would like to open some ports, I already done that on server with ufw. btw I'm connecting to a VPN that allows me to forward ports to my local machine via ...
- 11
1
vote
0
answers
2k
views
Allowing access to my server's ports when the server is connected to OpenVPN (Ubuntu Server 18.10)
I've recently installed Ubuntu Server 18.10, and would like to open some ports (i.e. SSH, HTTP) to be accessible to the public. However, because of my ISP's constraints (my ISP is on a CGNAT and will ...
0
votes
1
answer
455
views
vpn has no internet after upgrading to 18.04
Resently,i upgrade my ubuntu 16.04 server to 18.04
but after upgrading ,my (Cisco anyconnect,pptp) vpn servers have no internet access...
Can anyone help me?
- 665
0
votes
0
answers
1k
views
up script in ovpn configuration file for Open VPN gives fatal error: could not execute external program
My openvpn finishes with the following:
Sun Sep 30 01:35:11 2018 masquerade.sh tun0 1500 1552 192.168.255.6 192.168.255.5 init
Sun Sep 30 01:35:11 2018 WARNING: Failed running command (--up/--down): ...
- 913
4
votes
0
answers
1k
views
Help creating a Network Namespace to run a VPN
My intention is to setup a Network Namespace which will have a VPN running in it. I plan on having certain applications configured to start in that Namespace to be behind the VPN. Anything not ...
- 141
3
votes
3
answers
13k
views
How to get gateway of network interface?
Playing around with VPN connections on SoftEther, I created a virtual network interface for the VPN. Now in order to set iptables to route via this network interace, I need the gateway of the VPN ...
- 243
3
votes
0
answers
6k
views
OPENVPN: MULTI: bad source address from client
I struggled this problem for two days, but the problem is still here. Hope someone can provide suggestion or the way how to diagnose it.
What i want is let all client visit Internet over the OpenVPN ...
- 291
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
1
vote
2
answers
4k
views
VPS, VPN and traffic forwarding
I've configured a VPN server using OCServer on my VPS and I'm using anyconnect to connect successfully to the VPS from a client. I want all my traffic to be sent using my vps so I've configured IPV4 ...
- 61
0
votes
0
answers
121
views
Stuck on "Setting up VPN Linux Tutorial": replace "eth0" with the internet connection from server
I am following this tutorial to set a VPN. Everything was going smoothly until I encountered step #8 on the server side setup:
8. Finally if you wish the clients to communicate with one another, you ...
- 123
1
vote
0
answers
950
views
Netcat not working on linux server running VPN
Due to our very remote location and budget restraints my internet connection is limited to cellular 3G / EDGE. The service provider does not have an option for supplying me with a public IP, so we ...
- 11
2
votes
0
answers
986
views
How can I forward all incoming traffic from the local network to a VPN tunnel?
The router is forwarding all traffic from an IP range, that goes towards outside the local network, to this host (that is intended to be a VPN concentrator). Using tcpdump on the host verifies this.
...
- 121
1
vote
0
answers
99
views
Broken Internet connection - how to restore to default?
Today after starting my system I was unable to access the Internet. I suspected the VPN client (based on openvpn) I use (that sets up firewall rules to prevent leaks) may be the cause but I restored ...
- 11
0
votes
0
answers
1k
views
Use VPN for outgoing connections on Virtual Private Server
I have a Virtual Private Server (VPS) that I connect to on port 22 using ssh.
Once I'm connected to that VPS I make web requests from it (through curl for example)
By default these web requests come ...
- 101
4
votes
1
answer
2k
views
How to forward/route eth0 to specified as0t0 client? (Internet to VPNetwork's Client)
I have a VPN server which connected to the internet over eth0. And VPNetwork's device is as0t0/as0t1. I have a specified VPN Client which i want to reach it over internet over VPN Server's public ...
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
2
answers
4k
views
How to bypass VPN connection?
My router (192.168.1.1) connected to the internet via PPPoE. Server (192.168.1.20) has OpenVPN client installed and all other computers get 192.168.1.20 from DHCP as default gateway. My IP-phone doesn'...
- 41
0
votes
1
answer
794
views
Forwarding VPN clients to internet
I have following configuration.
OpenVPN server on a cloud(Ubuntu 14.04) with static IP( example 50.60.70.80 on eth0). Linux and Windows clients are successfully connected to VPN (VPN static IP's - ...
- 1