Questions tagged [vpn]

This tag is applied to questions related to various VPN types such as PPTP or IPSec.

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71 votes
6 answers
59k views

Differences between using Tor browser and VPN

I can't quite figure out the differences between using the Tor browser and using a VPN (like concretely proXPN). From what I understand the idea is the same, that they both hide the IP address. The ...
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  • 3,841
24 votes
1 answer
5k views

Could logless VPNs be traced?

Logless VPNs, such as ExpressVPN, claim that they can't tell authorities your real IP even if asked. They claim: No connection logs. Never logs connection timestamps, session duration, your ...
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  • 259
25 votes
9 answers
19k views

What's the best way to make my internet traffic anonymous?

Recently I have thought more and more about how to make my Internet traffic anonymous. Not for illegal reasons, but just to stop leaving information about me. The methods I know of to anonymize my ...
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  • 251
57 votes
9 answers
157k views

How does Google Maps know where I am, when I'm using a VPN?

How does Google Maps determine my location? I've gotten some understanding of Google Maps' geolocation methods from here: http://friendlybit.com/js/geolocation-and-google-maps/ In the newer ...
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  • 673
21 votes
2 answers
37k views

How safe is it to connect to Internet through VPN?

Sometimes I connect to the Internet using a VPN connection to be able to access the blocked websites. I've got a few questions regarding this: Are my important data (like my credentials) vulnerable ...
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  • 313
72 votes
3 answers
28k views

symmetric encryption session keys in SSL/TLS

This question concerns the session send and receive keys used in SSL/TLS protocol. my understanding is that this key uses symmetric encryption (DES, AES, BlowFish, etc.) I'm wondering, if public-...
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  • 1,190
244 votes
14 answers
45k views

My college is forcing me to install their SSL certificate. How to protect my privacy?

My college administration is forcing us to install Cyberoam Firewall SSL certificate so that they can view all the encrypted traffic to "improve our security". If I don't install the certificate than ...
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  • 2,151
46 votes
8 answers
118k views

How can you be caught using Private VPN when there's no logs about who you are?

I know there are 2 services of VPN (free and paid). Normally, free VPNs need money from somewhere and sometimes they can sell your information to any agency that needs it. Now, if we are talking about ...
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  • 803
52 votes
8 answers
22k views

Can an open Wi-Fi hotspot be considered "secure" when using a VPN connection?

There are many open Wi-Fi hotspots scattered around from cafes to airports. I understand that a non-passworded Wi-Fi leaves traffic unencrypted and therefore available for hackers to read. I also ...
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  • 3,041
42 votes
5 answers
138k views

Connect through two VPN clients

What exactly happens if I connect through two VPN clients on my laptop? For example, I connect using Cisco Any Connect, and then use another VPN client (such as HotSpot Shield or proXPN) to connect ...
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  • 523
22 votes
9 answers
5k views

How do I pick a VPN provider?

There's a lot of VPN providers out there. Some are free, some are for a fee, some report logs to the government, some inject ads into your HTTP, some are in other countries, you might not have any ...
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  • 5,184
10 votes
3 answers
50k views

How can I detect a VPN connection (even just in some cases) to get the real location of the user

I'm creating a web site, I would like to allow people to sign-up only from their "real" physical location (not using a VPN). I was thinking maybe comparing local and server time... what else...? ...
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  • 359
3 votes
4 answers
36k views

Can my company access my computer via the VPN?

The job I have requires that we have computers at home, a few years ago they had everyone install a VPN on our home personal computers (the company did not provide us with these computer) how safe if ...
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62 votes
6 answers
244k views

If I use a VPN, who will resolve my DNS requests?

Will they be resolved by my VPN provider, or by my original ISP (if left on "automatic" settings)? Would I have to manually configure a dns server, to make sure my requests will not be resolved by my ...
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25 votes
5 answers
54k views

What are the pros and cons of a VPN for privacy

Recently I have been getting more and more interested in the security (privacy and anonymity) issues of my online life. Not that I have anything to hide, or that what I do online is so interesting to ...
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16 votes
1 answer
2k views

How was the Apple Hacker caught? How can meta data be used to identify users through chained VPNs?

Online privacy is a big issue for many people nowadays. Using VPNs is the usual suggestion as a means to stay anonymous. More often than not, somebody comes up with the point "just chain multiple VPNs ...
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  • 9,490
24 votes
5 answers
11k views

Can a VPN Provider MitM my SSL traffic without me noticing?

If I connect to lets say gmail over a VPN. How does the provider forward the traffic without exposing my IP, but also without breaking the SSL. Shouldn't gmail know my real IP if the traffic just gets ...
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17 votes
2 answers
32k views

Are VPNS vulnerable to active man in the middle attacks?

I know that with SSL/TLS, man in the middle attacks are not possible. For example if Alice and Bob are trying to communicate and Trudy is trying to perform a man in the middle attack, then when Alice ...
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  • 275
10 votes
1 answer
6k views

How do VPNs bypass ISP monitoring

How exactly do VPNs bypass monitoring of the requests and traffic? I get that the traffic is encrypted, but how do VPNs manage to hide the DNS requests before establishing an encrypted transfer? If a ...
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  • 385
125 votes
7 answers
45k views

My ISP uses deep packet inspection; what can they observe?

I found out that my ISP does deep packet inspection. Can they see the contents of HTTPS connections? Wouldn't having HTTPS ensure that they can't see the contents being transferred? And can having a ...
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53 votes
5 answers
8k views

Is there any way for my ISP or LAN admin to learn my Gmail address as a result of me logging into Gmail's web interface through via their network?

The title says it all, really. I'm Alice, and I want to login to Gmail's web interface through my browser. Ike, the internet service provider, and Adam, the local network administrator, would like to ...
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  • 541
14 votes
2 answers
6k views

Should you use VPN if the website uses HTTPS?

If I visit the website which uses https, is there a point using an VPN? In places like coffee shop where internet is not secure. Because I think https already encrypts data?
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  • 461
6 votes
2 answers
3k views

What is a DNS leak?

I'm planning on getting a VPN service (probably Privateinternetaccess) and read that it is imperative to plug DNS leaks. The only information I found on google describing what these are is here and I ...
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  • 10k
68 votes
8 answers
137k views

What is the difference in security between a VPN- and a SSL-connection?

I would like to design a client-server application where the server is placed on Internet. I assume that I could set up the client-server connection using VPN (is it using IPSec?) or using a SSL ...
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  • 5,053
9 votes
5 answers
428k views

Can you still be tracked when using a VPN?

If I am using a VPN to connect to Twitter, can an organisation like Anonymous or Lulzec track me and find out my identity?
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  • 109
8 votes
3 answers
15k views

Understanding VPNs : How VPNs can be used for anonymization?

Previously, I asked the question Why is it difficult to catch “Anonymous” or “Lulzsec” (groups)? I understood every answer except the VPN thing. Its because I never knew what VPNs were. Any how that ...
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  • 2,145
19 votes
4 answers
81k views

VPN tunnel inside other VPN tunnel

This question is kind of asked already but it was asked with different context: VPN tunnel in VPN tunnel Connect through two VPN clients https://superuser.com/questions/763433/tunnel-in-a-tunnel-...
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29 votes
3 answers
40k views

Are there any known vulnerabilities in PPTP VPNs when configured properly?

PPTP is the only VPN protocol supported by some devices (for example, the Asus RT-AC66U WiFi router). If PPTP is configured to only use the most secure options, does its use present any security ...
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  • 293
11 votes
3 answers
25k views

Does a VPN hide what URLs I visit?

It's clear that someone listening on a network could still find out what website I visit over HTTPS (as discussed here) but what about when surfing in a VPN? What exactly can the underlying network (...
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10 votes
1 answer
16k views

Can VPN provider see my data?

I have a 2 questions: If I use a VPN and I go to any websites via HTTP - does VPN provider will be able to see the traffic? Those. logins, passwords, all the texts that pass through the channel (in ...
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  • 497
6 votes
4 answers
7k views

Is using Tor and VPN combination more secure?

I have been reading more about Tor and its risks to personal data leakage to the exit nodes in the chain. This last node can snatch encryption keys or log in information of websites I may have ...
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4 votes
2 answers
1k views

Public AP: How to reduce vulnerability window between Captive Portal and starting VPN?

I always use a VPN on my Mac when I access over public APs (such as coffee shop free WiFi) How much should I worry about the window of time where I am in the captive portal (the agreement screen) and ...
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  • 43
1 vote
3 answers
14k views

Can websites tell whether that I am visiting them using the same device?

Assuming that I am browsing a website ( say: Amazon.com) using Private/Incognito mode, and I clear my cookies, and have VPN turn on. Will the website still be able to identify that my device has been ...
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  • 905
1 vote
1 answer
4k views

My ISP provides IPv6 natively but my VPN does not support IPv6

I have an internet connection that is soon rolling out IPv6 native support but my VPN connection is far from rolling out IPv6 connection. Can there can be any sort of leak if I still connect to my VPN ...
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  • 598
123 votes
12 answers
24k views

Is there a legitimate reason I should be required to use my company's computer? (BYOD prohibited)

I just got a new job at a medium-sized (~100 employees) company and one of the first things I was told is that I cannot use my own computer, because I need to be able to connect to their network, ...
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61 votes
6 answers
133k views

Anonymity on Facebook - how do they suggest people I should know?

I want to know how Facebook discovers the people who you know in real life or who know you. I tried the following to see if Facebook can still discover my acquaintances in real life and suggest them ...
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32 votes
6 answers
7k views

How safe are employee laptops in China against International corporate espionage?

I recently took a business trip to China. Our IT department told me I could not take my normal machine, and instead gave me a loaner. This loaner had MS Outlook and was linked to my normal company e-...
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  • 2,022
21 votes
2 answers
41k views

Do VPNs provide sufficient protection over public wireless networks?

I know that VPNs are the standard way to secure communication between a remote user and their primary network, but I've never felt entirely comfortable relying on them when using an open wireless ...
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  • 433
17 votes
8 answers
69k views

Is it possible to Identify a VPN user by finding relations in traffic?

If I am using VPN service to protect my identity, can my traffic be used to identify all my traffic? For example, if I am accessing two services: Some service A, where I do not leave any ...
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15 votes
3 answers
10k views

Can a VPN decrypt my SSL traffic?

Are VPNs able to decrypt SSL traffic originating from my use of services such as Gmail, Dropbox and Skype, Google Talk and HTTPS-enabled websites? I'm asking because I always turn off these and other ...
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  • 1,295
9 votes
1 answer
8k views

How to generate a unique and uncopyable VPN certificate/key for a specific client hardware device?

The problem is : Nothing prevents the user to copy the certficate/key on a different hardware device and use it from a different hardware device... Is it possible to generate a really unique ...
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  • 191
7 votes
6 answers
15k views

What can my university see if they have my MAC address?

When I first got to my university I had to provide my MAC address to get access to the internet. What I want to know is what information can they get from having my MAC address linked to my name. I ...
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  • 71
1 vote
3 answers
2k views

How can I use a VPN to protect my privacy

How should I configure a VPN in order to access blocked websites and to hide my identity? Usually I use SSH tunneling to protect my privacy and to escape censorship. I know nothing else about VPNs ...
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  • 121
14 votes
1 answer
2k views

Does a VPN provide any security benefits over sshuttle or a vanilla ssh tunnel?

I use sshuttle to tunnel my traffic through one of my remote boxes whenever I'm in a cafe or connected to an insecure network. Does a VPN provide any additional security benefit over this kind of ...
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  • 243
4 votes
4 answers
644 views

How can a network be secured against attacks coming from the inside?

(updated to (hopefully) be less broad) No matter how well one secures a network there's always the chance of an attacker gaining access. In a shared home + home office network (eg. for a remote ...
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8 votes
3 answers
12k views

SSL VPN Detection and possible to block

Is it possible to determine the difference between a VPN on port 443 compared to standard SSL traffic? In order to access SSL websites you need port 443 open but if you setup a VPN Service on port ...
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  • 3,086
2 votes
4 answers
5k views

Is my browsing history on the server hidden when I use a VPN?

I am a client within a server in a school. My computer has a static IP address to enable me to connect to the internet. We have a server that records the browsing history of the computers that are ...
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1 vote
1 answer
7k views

Defeating Browser Fingerprinting by spoofing the browser user agent and VPN

I don't want any website to identify me and to know what is my geographical location. As far as a website is concerned, I am always a new visitor who never visits it prior. If I leave the website, ...
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  • 905
-1 votes
2 answers
435 views

What can IT see and log? [closed]

First of all, I'm a co-owner of my company and I am using my own computer on my company network. Occasionally I'll browse some websites throughout the day to kill some time. My business partner ...
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10 votes
2 answers
28k views

How does mobile free internet bypass works? (UBT / FBT)

I have encountered a mobile application named "HTTP Injector" which lets you get free internet access (UBT / FBT). The process to get it work and receive free internet seems to be as follows: ...
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