Questions tagged [openvpn]

An open source virtual private networking application written by James Yoan and published under the General Public License (GPL).

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11 views

Chaining VPNs by docker [migrated]

I want to use Lokinet over a primary vpn. So I created a docker for primary VPN called openvpn (it uses an openVPN connection) and tried: # docker run --net=container:openvpn --name lokinet --cap-add=...
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35 views

VPS for Tor & I2P - which other services can I safely run on same?

I'm toying with the idea of setting-up a Tor node (middle/guard) and an I2P node on the same VPS. I think that should be safe(ish)... But I'm wondering what other services I could run without it/them ...
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92 views

Azure VPN through Wireguard VPN - 'Name Not Resolved'

I have setup a wireguard (WG) vpn server on a raspberry pi that connects to my home internet and I connect to this with my work laptop through a VPN router. On my work laptop, I get access to several ...
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74 views

Can we double encrypt VPN traffic with a custom certificate?

I want to forward VPN traffic to an Internal Proxy that uses client certificates to authenticate users. Can we add this second encryption at the VPN Configuration file for example? Or what is the best ...
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1answer
105 views

What information is sent through companies VPNs?

I'm currently working at home. My employer provides me a VPN access to the company resources: intranet, ssh access to computers, etc. I was wondering what exactly means to use a VPN, and what type of ...
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95 views

Connect to VPN Server with SSH from computer connected to the VPN itself?

I think I already responded this question to me (doing some experiments). However, I wanted to ask just for further confirmation. Context: I have an OpenVPN server installed on an AWS EC2 instance. ...
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470 views

Which OpenVPN cipher is the more secure?

From a security standpoint, which OpenVPN cipher should I use? I read online that AES-256-GCM is the most secure for OpenVPN but I prefer to have a confirmation.
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75 views

Is duplicating an OpenVPN server secure?

I read this tutorial to create an OpenVPN server, it worked perfectly and was configured correctly, using a dedicated server to create the certificates it requires. Now I want to create a new OpenVPN ...
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2answers
150 views

Can app / service provider konw when its user using (selfhost) VPN server?

Let's say I setup openVPN at home, then I go out. I connect my ios with openVPN server at home, then I download Netflix app. then I turn off location and any necessary tracking feature on ios. I ...
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73 views

OpenVPN bridge - using same interface for internet connection

For setting a vpn connection in bridge mode using openvpn, the documentation of OpenVPN for configuring a bridge mentions that the OpenVPN client must have at least two Ethernet interfaces, one ...
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313 views

OpenVPN client suddenly refuses to connect to my self-hosted VPN

It's been working fine for years, but now suddenly I'm getting a strange error. Does anyone know what problem this points to? OpenVPN Connect Version 3.0.2 (598), error logs: [REDACTED IPs] 5/16/2021,...
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215 views

Can my company track my laptop if I've reinstalled the operating system?

I was given a laptop by my company. I reinstalled everything and now I occasionally open Whatsapp web in the background to reply to messages. Most of the times my laptop is connected to the Company's ...
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1answer
153 views

VPN doubt about "encrypting" an IP address

According to Kaspersky Encryption of your IP address: The primary job of a VPN is to hide your IP address from your ISP and other third parties. This allows you to send and receive information online ...
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2answers
488 views

Using iptables to set up a killswitch for openvpn: DNS requests are blocked but they shouldn't

I bought a subscription to a VPN service and I am using the openvpn 2.5.1 client to connect to it. I am using Ubuntu 20.10. I now want to emulate the "kill switch" feature of most ...
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71 views

OpenVPN certificates vs. SSO with MFA

I am wondering, is using certificates with OpenVPN gives any advantages vs. using SSO with MFA to authenticate to OpenVPN? Are there any disadvantages for combining both?
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Does an OpenVPN client attemtping to connect a wrong server IP poses a security risk?

I have an OpenVPN server setup at home and the public IP address I get from my Internet Service Provider is dynamic, not fixed. In the configuration file of a VPN client, the IP address of the server ...
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1answer
106 views

Internet privacy, VPNs, etc. Am I anonymous? [duplicate]

I am a member of a forum that recently disabled my account because their system picked up another account from my household. Anyways their terms of rectifying the situation are pretty invasive to my ...
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1answer
80 views

Limiting VPC subnet access for NAT OpenVPN clients

I'm currently testing OpenVPN to give developers limited access to AWS VPC's. Assuming I have 3 VPC's... VPC-A, VPC-B, VPC-C, each of these with private and public subnets. The OpenVPN server will be ...
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204 views

Mixing VPN Protocols

Is there any benefit to mixing vpn protocols as far as obfuscating your traffic. Would a multiple hop setup like (openvpn(server1) + wireguard(server2)) be better or is (openvpn(server1) + openvpn(...
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93 views

Openvpn not hiding dns, using tcp

I am using same configuration files for OpenVPN, same operating system (ubuntu 20) on two different laptops, but I notice with Wireshark, then on one of them, the VPN connection goes through UDP, ...
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120 views

Routing a site-to-site VPN through my regular VPN service

currently engaged in live competitive red vs blue team exercises in an enterprise style Windows AD environment. My device runs a modern Debian Linux OS. cscotun0 We typically connect to the lab/domain ...
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178 views

How VPN works internally [closed]

The VPN is used to establish a secure connection (creating a tunnel) to another network over the Internet. It masks our IP address and geographical location and also when the information enters the ...
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1answer
762 views

How does openvpn work for only certain servers?

I got a *.openvpn from work and I monitored the traffic on wireshark. On my normal vpn every traffic is routed via the vpn (as expected). But with this work vpn only the traffic that uses the work ...
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93 views

Undetectable Proxy or VPN Protocol

Is there a safe way for creating a proxy, tunnel, or VPN that cannot be detected by the datacenter or ISPs? I'm living in an oppressing country, but I've access to a VPS with less regulated access to ...
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1answer
733 views

OpenVPN Key Size 1024 vs 2048 and Eavesdrop vs Access?

OpenVPN recommends using a 2048 RSA key size for greater security, however, the hardware I'm using is somewhat weak and defaults to using a 1024 RSA key size. I'm trying to determine if it's worth ...
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4answers
7k views

Using OpenVPN on Windows instead of VPN apps: missing certificate

Sorry this might be a noob question, but I subscribed to a VPN provider which ships its own app on Windows. Now I thought I'd prefer to use the OpenVPN client app instead. I create a profile by ...
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158 views

How secure is /dev/stdin in UNIX systems?

Is decrypting secrets with ccrypt and piping the result via stdin to openvpn secure? I've written the following alias to start an openvpn client more easily than before: sudo bash -c 'cd ...
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1answer
114 views

Which methods should I connect a VPN, via that-vpn-app or through an VPN configuration on network manager linux?

I saw there are 2 available methods (that I know of and currently focusing on) to connect to a vpn. The first one is through their application based of that vpn provider. The others is by configuring ...
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4answers
289 views

How to avoid leaking your public IP to installed applications like browsers when using a vpn?

What is the easiest setup to hide your public IP from installed applications and prevent things like WebRTC leaks on a common Linux distro?
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1answer
60 views

Combine router VPN with Client VPN

I would like to combine my router's default VPN with another one I run on my laptop. Here is what I currently have : Here is what I would like to have : Both router (DD-WRT) and laptop use OpenVPN ...
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1answer
143 views

When pushing a DNS resolver to an OpenVPN client, does the resolver see the IP address of the client or the OpenVPn server?

When configuring an OpenVPN server, you have the option of pushing DNS resolvers to the client - like so: push "dhcp-option DNS " If this approach is used and a public DNS resolver is defined, will ...
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1answer
595 views

ecdh-curve and tls cipher do not work together

most of my question are already answered by reading in this forum, but "one last thing" is still open. I am running a OpenVPN server with the following security characters: SERVER (Raspbian Buster)...
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1answer
182 views

Antivirus/DPI Solution with openvpn server

I wish to set up a system that I log into with openVPN on my Raspberry Pi 4. I have already set up an openVPN server with a PKI infrastructure as well as other services that run on the Pi (like pi ...
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1answer
2k views

Block WireGuard clients' access to specific websites

I have installed a WireGuard VPN server on a Raspberry Pi (running Raspbian) using PiVPN and I would like to either block the VPN clients to access specific websites (i.e. block them access https://...
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152 views

Opening OpenVPN to the world

I built my own private network with OpenVPN. I bought a VPS at hosting provider A(closer to home) and another two at hosting provider B(cheaper). Using openvpn I connected the two to the OpenVPN ...
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2answers
232 views

Meterpreter Session over OpenVPN [closed]

Last month I made a pentesting course and now they opened a lab for us to practice before we apply for the certification exam. We connect to the lab over OpenVPN in our Kali Linux machine. I'm trying ...
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427 views

Does OpenVPN encrypt my traffic between my computer and VPN server?

I set up my own VPN by installing OpenVPN on a Ubuntu server, then I download client.ovpn file from Ubuntu server to my Windows laptop. And then, I import that client.ovpn to OpenVPN GUI app on ...
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1answer
906 views

Which VPN offers more security conceptually, SSL VPN or L2TP/IPSEC?

Aside from possible implementation bugs, which VPN concept aims to offer more protection by design? SSL VPN (implementation example - OpenVPN) L2TP/IPSEC (implementation example - Strong Swan) After ...
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1answer
151 views

Can't tell If The OpenVPN Server I Setup Is Encrypted using Wireshark?

This might sound dumb, but I set up an OpenVPN server on a Synology NAS. When I connect via the client at home to the server, everything works for. I know you can read packets in Wireshark. If I ...
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1answer
1k views

How to generate an OpenVPN 4096 or 8192 bit static key?

How to create an OpenVPN static / pre-shared key with key size 4096 or 8192 bit? openvpn --genkey Creates 2048 bit strong keys only. Static key. Not CA.
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638 views

How can I hide my mac address when using a public wifi? [duplicate]

As a new student of cyber security, I have started to see in real-time how an individual can actually scan and view the mac addresses on a public wifi connection. How can I hide my mac address when ...
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1answer
706 views

Wireguard vs. OpenVPN [closed]

Which is better in what scenario? What cons and pros do they have? (optional question) Which is more secure? (optional question) Best use case of each one? Isn't WireGuard based on OpenVPN?
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1answer
813 views

Tunnel Openvpn traffic through ssh?

I know similar question have been asked but none of them are explained thoroughly. I have setup a VPS and setup openvpn using https://github.com/Nyr/openvpn-install on tcp and port 443(I have access ...
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1answer
126 views

If I use a VPN, can an enterprise proxy insert itself in the middle?

I'm using the guest Wi-Fi at a large corporation, and connecting to a commercial VPN provider via the OpenVPN client. I do not know one way or another if a proxy is used on the guest wi-fi, but I ...
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1answer
652 views

For security purposes, can I use vpn with ufw to allow traffic only from the vpn on ubuntu?

Is this possible? If not through ufw then some other software or iptables? How should I set up the ip tables? Assuming my public ip is known (and I don't want to change it), would it provide complete ...
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1answer
4k views

how to force openvpn client to use TLS instead of SSL connection [duplicate]

i'm trying to use openvpn client to connect TLS VPN server here is my .ovpn file client tls-client dev tun proto tcp remote example.com 443 resolv-retry infinite auth-user-pass persist-key ...
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1answer
259 views

Is it safe to use RPC with sensitive data through an encrypted VPN connection instead of SSL/TLS?

I have an application where there I'm planning the following setup: user <-----------------> layer 1 server <------------------> backend server internet (https) ...
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1answer
625 views

What's the drawback of enabling auth-nocache in OpenVPN?

Using a "default" configuration, OpenVPN clients show the following warning when connecting to a VPN server in red, attention-seeking letters: WARNING: this configuration may cache passwords in ...
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2answers
3k views

What are the risks of installing a CA on the same machine as OpenVPN server?

Digital Ocean states in one of it's tutorial about OpenVPN server : While it’s technically possible to use your OpenVPN server or your local machine as your CA, this is not recommended as it ...
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1answer
569 views

Meterpreter and OpenVPN

During a meterpreter session, is it possible to deliver a payload that creates a connection request to a local OpenVPN connection? For example: I have a payload. Whenever that payload runs on the ...

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