Questions tagged [vpn]
This tag is applied to questions related to various VPN types such as PPTP or IPSec.
1,357
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Best way to ensure wireguard VPNs aren't blocked? [closed]
I used self-hosted wireguard (on GL-INET) to work remotely for 1.5 years without any issues on Bell Canada, but yesterday, suddenly it was blocked (on 51820) as with few others I know.
However, a good ...
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27
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Can't connect to internet via ethernet cable but as soon as I use VPN internet starts to work [closed]
I am using ethernet cable to connect to internet on my laptop. However, sometimes it doesn't work I can't open any website or doing any online activity. When I use VPN, only then laptop connects to ...
user298333
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2
answers
131
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Any tool that can prevent ISP from knowing which websites we visit? beside tor?
Any tool that can prevent ISP from knowing which websites we visit? beside tor? while https can help, but still ISP knows which domains/websites we visit. There is no way around it?
Also believe that ...
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1
answer
54
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Feasible for China to stop all VPN use within its borders?
Is it technically feasible for China to stop all VPN use within its borders?
A slightly narrower goal might be to stop all new users of VPNs within its borders while doing nothing about temporary ...
- 943
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52
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Benefits of VPN vs. HTTPS + DoH + ECH for Corporate Network Security
I'm currently researching network security measures for my company, and I'm trying to understand the advantages of using a VPN (Virtual Private Network) compared to a combination of HTTPS (Hypertext ...
- 103
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3
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121
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self signed certificate
I read a lot of articles about self signed certificates and I'm not exactly sure if I'm getting near to what I want to actually achieve.
I'm trying to implement a self signed certificate so that the ...
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25
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Creating own VPN-server for external users [migrated]
I'm trying to set up a VPN-server from my home router so that external users (from other countries) could connect to it.
Basically, I want it to work this way:
External User (IP-address "A") ...
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1
answer
80
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NordVPN Couldn't Estabish a Secure Connection - ISRG Root X2
I'm using NordVPN and it's popped up with this about how it couldn't validate a TLS certificate:
I've tried looking up what ISRG is but I don't get much of an explanation on it anywhere. It appears ...
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answers
35
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wget throwing errors on vulnerable machine [closed]
I’m trying to crack a Proving Grounds machine. I was making great progress, but once I got in, wget refused to work. On small files (i.e. one that contains a single string) it works fine, but for any ...
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103
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What is the difference between a VPN and a Tor Socks proxy on public wifi?
I seek protection against MITM & snooping of VPN or Tor proxy traffic on public WiFi.
So, what are the different security impacts of each of these 2 solutions:
Using a VPN (like Proton VPN) to ...
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17
votes
2
answers
6k
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Is Tor over VPN a security risk?
In his talk about OPSEC, The Grugq stresses that you first have to go through TOR before connecting to a VPN. Otherwise, the VPN would be a direct link from the endpoint to you. He summarizes:
TOR ...
- 171
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1
answer
93
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How to know whether a VPN is blocking a website or a website is blocking a VPN
So I've got two VPN subscriptions, let's call them VPN A and VPN B. And I like going to a somewhat popular website, which I'll call Site C.
I'm a new customer to VPN B, and I've noticed that I can't ...
- 469
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0
answers
112
views
Couldn't establish a secure connection
NordVPN popped up with
"Couldn't establish a secure connection." "We couldn't validate this
TLS certificate and ensure a secure connection required for NordVPN to
run. It looks like ...
- 21
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answers
22
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Does VPN on app and router result in double encryption? [duplicate]
I have a VPN installed on my router and it is permanently connected to a city (City A).
I also have a VPN app on my laptop. If I am connected to the WiFi on my VPN-enabled router and use the app on my ...
user295733
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29
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VPN used while updating files to VPS via FTP (WinSCP) - what IP is logged? [duplicate]
When I went out for holiday I was working on my websites on local WI-Fi, I was connected all the time with Surfshark VPN.
I’m sure that my location is secured but what about the situation where I ...
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1
answer
31
views
What are the risks with PPTP (MS-CHAPV1/V2)?
What are the risks with PPTP (MS-CHAPV1/V2)? Are the only ways that it can be exploited are if someone already has access to the network and can ARP poison etc or capture packets some way? Or can it ...
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66
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Can an employer see all of your local network activity or just the device connected to their VPN? [duplicate]
I own the home internet router, and during work hours, I connect to my company’s VPN.
I have recently been on the radar with my HR and management. So I feel I am being tracked closely by them.
When I ...
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1
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120
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can a VPN provider do DNS poisoning?
I was wondering if we push our DNS over the VPN and basically let them do DNS resolution, is it possible to perform DNS poisoning and man in the middle attack on us?
I know browsers check certificates ...
2
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1
answer
113
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Do VPNs log and analyze OCSP requests?
I am a privacy-conscious user currently living in Russia where the Internet is censored and monitored by the Russian state. Russian ISPs are legally required to log and store all users’ Internet ...
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answers
44
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Is it possible to see someone using vpn who is connected to my AP and turned on hotspot for his mobile in which he uses vpn [duplicate]
I want to monitor traffic in my Access point of the users who turned on hotspots in their PC after connecting to the wi-fi.
I want to monitor users who use vpn to access blocked sites in my ...
3
votes
1
answer
78
views
What viable methods can be used to prevent bypassing of country IP blacklisting edge controls by using VPN?
I work in the cybersecurity division of my employer in a regulated field.
Where I work, edge perimeter controls on firewall are set up to DENY All incoming connections originating in blacklisted ...
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99
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Can my employer detect that I am using a torrent client on my home pc while teleworking? [duplicate]
I am working from home with a 'work' laptop, connected through a VPN client to my company and also to the customer networks.
I also have my 'home pc' on the same home network.
Both computers are ...
1
vote
1
answer
223
views
Implications of accessing a web app via a VPN
I have a cloud-hosted server that I can Remote Desktop into. I have a web application that is hosted on this server via IIS. I also have a backend server on this same server that runs to get backend ...
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17
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Can an attacker sniff the encryption details when connecting to a VPN? [duplicate]
I thought I would be protected from sniffing if I use a VPN, even in a setting where my traffic is going through a «man-in-the-middle» either by ARP poisoning or an evil twin attack.
Now I was told, ...
- 101
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73
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ISP-restricted VPN on Android
How to connect to VPN service on Android via its app if it's restricted by state ISPs, but you're able to connect via cloud VPS network outside the state
My idea is about concepts in general:
you ...
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130
views
Is this sign of hacked VPN?
I have some issues with Epicbrowser´s VPN.
I write a URL in the address bar like duckduckgo.com. Then mfr.cdn.dcop.cz appears just for a moment. It´s so brief that it took me a few days to capture the ...
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33
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Is is bad that on-prem "prod" DB is accessible/visible from in-cloud dev environment?
We have our dev & prod env split between AWS (databricks workspaces) and on-prem Linux boxes. Specifically, we have DB instances on-prem and have python code running inside our databricks ...
- 113
3
votes
1
answer
583
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Restrict VPN access to only authorised machines
Let's say the situation is this: I'm a big corporation with a whole bunch of GDPR compliance and other regulatory stuff which means I need to ensure that certain data doesn't leak (so basically most ...
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1
answer
61
views
Is VPN "safer" for public key encrypted connections
I don't know much about encryption and how internet work in general, so my question might be ill-defined... but I guess I will still try to ask a question here.
When you connect to a website directly ...
- 101
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235
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VPN vs. DoH or both? [duplicate]
I have set my Mac system WiFi DNS to 1.1.1.1. and I believe Safari supports DoH now.
Should I use both DoH and a VPN together? Is using both better or does using both decrease security in any way?
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370
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Bandwidth limitation in the censorship systems
Recently, Iran’s government has launched a sort of new censorship system that manipulates bandwidth as I will describe below.
When a user connects to a VPN server and does an Ookla speed test, the ...
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answer
129
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proxy anonymity level, what is the tehnical difference ? (specific example from hide my name)
By using hidemy name I can check for a proxy if it is up or down, and also check the anonymity level using the app. A sample result looks like this:
IP address Port Country, City Speed ...
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1
answer
1k
views
Using Android private DNS with VPN
Android allows now to set "private DNS" in the settings (which also allows using DNS over TLS - sadly over HTTPS atm only works for specific DNS providers).
What I am trying to establish is: ...
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-1
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2
answers
158
views
Is using a work computer on a home network really more secure than a home computer remoting to the work network?
My company began allowing remote access work during lockdown, and still allows a limited amount of it. Originally, those of us with a sufficient computer at home were allowed to install the company-...
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80
views
How would I communicate with my computer from a remote server when I'm using a VPN? [closed]
I have a computer at home. It's connected to the Internet. I use OpenVPN on Windows 10 to auto-connect to a VPN at startup.
Now, I would like for a remote computer to make some sort of network ...
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1
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answers
22
views
How do I reach the "remote" web app using IP routing? (locally reaching another subnet with VPN to get to an app) [closed]
I have a PCAP basically stating two things:
An ARP request who has 192.168.a.b? Tell 192.168.b.c
An ARP answer with the MAC address follows of course.
The following requests all access an web app, ...
- 1,546
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vote
2
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185
views
Can an NGINX reverse proxy reveal the backend if serving non-static content?
My setup consists of a public-facing VPS running NGINX, and a local machine running certain services. The VPS and the local machine are connected using WireGuard, and NGINX on the VPS is using ...
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1
answer
116
views
Privacy related to company VPN
Last week my employer sent me a root cert to access the company’s VPN on my personal iMac. When I am connected to the VPN, I’m aware the VPN server can encrypt/decrypt the traffic, but I have some ...
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1
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2
answers
61
views
What is the better tunnel endpoint?
I'm trying to understand the consequences or implications of setting up tunneling endpoints for the below topology. The tunneling may be used for anything (encryption, VPNs, etc.) assuming the general ...
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vote
1
answer
73
views
Is simply running iftop a good way to check for VPN leaks?
I would like to test my VPN for leaking but don't want to be limited to testing it in a small time window like some of those VPN leak testing websites do.
Can I just turn on my VPN, then also run ...
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2
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1k
views
How bad it is to open qBittorrent web UI port
I have small home server that runs a qBittorrent in docker container, and I was wondering how bad/risky it is if I'd forward the port for the web UI so I can access it from outside my network.
I know ...
- 111
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847
views
OpenVPN & China's Great Firewall
The company I work for has an OpenVPN server so we can access its intranet from home.
The problem is that I'm going to move to China and I'll need to connect from there, but I've heard connections ...
15
votes
1
answer
7k
views
Can my university see the downloads from a Discord application when I use their Wi-Fi connectivity?
I didn’t use a VPN, and I am asking myself if my university can see the downloaded files or even the fact that I opened the Discord application to download.
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334
views
Can VPN protect me against MITM attacks if my device is already compromised by having a malicious root certificate installed?
Let's say my device is already compromised without my knowledge by my ISP, it has a malicious root certificate installed which allows my ISP to view all of my HTTPS traffic as plain text.
now if I use ...
user285140
2
votes
2
answers
96
views
Can VPN change my data packets?
I don't know the details of VPN, I always imagine that's a middle point between me and server(internet).
And VPN point always receive my(and from server's) data packets.
So the thing I want to know is ...
- 21
1
vote
1
answer
213
views
VPN for accessing server behind home router
We have a server setup on our private network for various things. I'd like to be able to access services on this machine whether I'm at home, or on the road. Our provider is Starlink, which does not ...
- 111
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1k
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Connecting to company VPN issues a failed certificate verification
As one can see on the screenshot below, connecting to the company VPN via FortiClient issues a X509 verify certificate failed.
I have informed the CIO who is the security person as well but it is not ...
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2
answers
2k
views
Is NordVPN changing my security cerificates? Could this be a MiTM attack?
I noticed that when it comes to some websites (e.g. Twitter), the security certificate is changed when I log in and out of NordVPN - the SHA-1 digest is visibly different.
Keep in mind that not only I ...
- 175
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111
views
How to avoid compromise of data connecting by compromised router?
Imagine that there is a PC you have physical access to, and a router you have no physical access to. Also no digital access to router. The router is for sure compromised and intercepting all packets ...
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2
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2
answers
324
views
How can my ISP block some sites, even though I'm using a VPN?
In my country, internet service providers offer YouTube only, work and learn packages, and Twitter only packages.
I activated YouTube only package and used a VPN. But I can only go to youtube and can'...
