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

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3
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3answers
165 views

Detection and monitoring of important events on OpenVPN server

If an attacker can establish a VPN connection to the company network and have access to internal resources (by getting various certificates and credentials used to authenticate to the VPN server), ...
3
votes
1answer
78 views

Why L2TP is required over IPSec

IPsec facilitates encryption and authentication with ESP. With tunnel mode, IPSec is also providing tunnelling. More importantly, one can use IPsec in tunnel mode, along with transport mode (i.e. ...
3
votes
3answers
214 views

What do browser VPNs actually do?

Firstly, I am not sure if this is the correct forum to be asking this question so I apologise if not. What I would like to know is, what do VPN browser plug-ins (such as zenmate) actually do and how ...
3
votes
1answer
18k views

OpenVPN Tap vs Tun Mode [closed]

I would like to know practical difference between TAP and TUN mode when use with OpenVPN. When to use TAP and When to use TUN ? What types of traffic will pass with both mode ?
3
votes
1answer
72 views

How difficult is it for ISPs to understand a user is using VPN?

If a user is using VPN, how difficult is it for an ISP to know that a user is using VPN ? If the government demands, isn't it possible for the ISP to provide a list of customers who could be using VPN ...
3
votes
2answers
2k views

Is chaining multiple VPNs a good way to reach anonymity on the internet?

I would like to chain a couple, say 6 or 7, VPNs together to create a sort of "super" encrypted lane on the internet. I'm not too concerned about speeds, all I want is privacy and anonymity. I've ...
3
votes
1answer
126 views

IPsec: Is AH in tunnel mode secure?

I have a site-to-site IPsec VPN which was performing poorly (10 -20% upload/download speeds as a percentage of available WAN circuit bandwidth) when using ESP in tunnel mode with DES encryption and ...
3
votes
4answers
253 views

Is password + second factor more secure than public key auth now? (SSH)

I ask this question because, I think, we now can reasonably assume the following: NSA can break VPN and SSH: This is stated many times in the unclassified slides. Also, GCHQ has demonstrated (and ...
3
votes
2answers
2k views

What are the advantages to using a VPN over secured/trusted wifi

It's often recommended that you should use a VPN when using unsecured or untrusted networks, such as open public wifi or secured wifi that you don't control. What are the advantages to using a VPN on ...
3
votes
1answer
546 views

L2TP/IPSec: Mutual authentication BEFORE user can access VPN

I came across a question You are the network administrator for your company. You have deployed Windows Server 2008 on all server computers in your company. You have deployed the Network ...
3
votes
1answer
2k views

If I connect to VPN through proxy, who can see what?

I try to understand what happens when I use an HTTP(S) proxy in my OpenVPN client configuration. What's the advantage of an HTTPS proxy over plain HTTP? In any case the encryption takes place on the ...
3
votes
2answers
2k views

Hiding and faking my location?

I read this: Reveal the True IP of a User I am using Hola Unblocker to hide my IP address. This appears to work when I go to netflix as the site treats me as a US resident (which I am not). This ...
3
votes
2answers
579 views

VPN Appliance Placement Options

I'm currently looking to implement a VPN solution (based on a Checkpoint Connectra) purely to provide remote access to staff (no site-to-site, or customer access), but the one design decision I can't ...
3
votes
1answer
46 views

Should a corporate laptop client-server VPN connection last for days?

I was experimenting over the past few days with letting my laptop hibernate vs. shutting down on a daily basis (I have always been a shutdown guy, but am trying to update myself). While on business ...
3
votes
2answers
213 views

Can First Hop Man in the Middle be Defeated with TOR or VPN?

I was reading this article about a certain in flight WiFi provider issuing fake SSL certificates for Google. This doesn't really surprise me all that much since I'm well aware of the concept of ...
3
votes
1answer
266 views

My Ipv6 is under attack by the smurf6?

When I go to whatsmyip.org under my host name I get "Your.Ipv6.Is.Under.Attack.By.The.Smurf6.Info". What does this mean? I'm using private internet access as my VPN so I'm guessing PIA is under some ...
3
votes
1answer
3k views

How can I detect if someone is using an ssh tunnel as a proxy to connect to a VPN?

I've got an SSH server setup in a remote location, which I use to tunnel traffic from an android tablet. On the tablet, I have the Cisco AnyConnect app to connect to my company's VPN. We want to be ...
3
votes
1answer
542 views

SSL VPN placement strategies

I wanted to know the advantages and disadvantages of placing an SSL VPN with respect to CIA in different locations: with firewall within the internal network within the DMZ Any reference also ...
3
votes
2answers
15k views

Does portforwarding present a risk to anonymity?

AirVPN by default has all ports closed but allows port-forwarding. I think this is required for P2P. Is this a threat to anonymity (e.g. would the person at the other end of the P2P transmission know ...
3
votes
3answers
352 views

Dedicated Server in Cloud Environment - SSL Remote Login vs Dedicated VPN

Thanks for taking your time to look into this question. Background I have my website hosted in a dedicated server in the cloud. The server is a Windows 2008 R2 machine. To publish I FTP files to ...
3
votes
1answer
112 views

Is DNS leak really an issue?

I'm reading about DNS leak and what threat it can pose to VPN users, for instance, this question. But generally, there's tons of similar topics on the internet. But what are people afraid of? I just ...
3
votes
4answers
173 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 ...
3
votes
1answer
87 views

VPN Authentication and Network Administrators

Is it possible for a network admin (or attacker) to monitor traffic sent to a VPN server during authentication and end up being able to decrypt the data as if they were the legitimate user? I don't ...
3
votes
1answer
1k views

REST API communication between two Web Servers - VPN or https?

We have two servers that will be sharing data and communicate over a REST API: our main application server will communicate with the server of our client that is managing some assets. In short: Given ...
3
votes
1answer
96 views

How to design a right VPN connection for an organisation (Interconnected MPLS link or Individual FW)

Thanks in advance for your advice We have to implement VPN connection for nearly 7 countries Option 1 : As we have private MPLS link to all 7 countries. It is been outsourced Third party. They ...
3
votes
1answer
154 views

iOS VPN profiles - are the signing certificates global? Can this be a MITM exploit?

I have installed an app on iOS to connect to a well-known VPN service. The app requests installation of a profile onto iOS, which as far as I can see are a collection of 7 certificates - 5 of which ...
3
votes
2answers
2k views

Is using VPN on a router more secure than using a dedicated VPN machine?

I was looking at the features of the Asus RT-N66U router and noticed the built-in VPN feature. I am currently running an OpenVPN server on an ESXi VM, but I was wondering: would using the VPN feature ...
3
votes
1answer
142 views

BYOD - Looking for Secure means of Wiping Data Remotely

We are in the process of implementing a Bring Your Own Device policy to allow our many employees to use their personal laptops and desktops (Windows platform) to VPN into our company's network. These ...
3
votes
2answers
642 views

Skype Audio / Video Session over VPN?

Basically I'm wondering if a Skype video session along with audio could be logged (or recorded) over a virtual private network? I know whoever hosts the VPN server can log which websites you visit (or ...
3
votes
0answers
37 views

How does a website know my location? Checked with ipleaks and VPN seems to work correctly

Recently I have been using a VPN to watch a free web series available only in the US -- on a website called https://go90.com. Until a few days ago everything was running smoothly with just Hola VPN. ...
3
votes
3answers
108 views

VPN server in a router [closed]

I am new to using and configuring VPNs. I was thinking of setting up my router as an OpenVPN server, but as I understand that is to connect form the outside to my network. However, I want a connection ...
3
votes
0answers
141 views

How do i know when IPSEC Phase 2 Has completed with Openswan?

When I bring up a connection using openswan I get the following output but I don't see any ESP traffic through ports 50, 500 or 4500. # ipsec auto --up globacom-vpn 104 "globacom-vpn" #44: ...
3
votes
0answers
27 views

How to make my traffic go out of one VPN into another? [duplicate]

This question has been asked before a number of times, but I seek a more in-depth answer: The objective is to mitigate the risk of being identified, by setting up chained VPN services so that the VPN ...
3
votes
1answer
60 views

Server side Client VPN management?

Is this possible, and how? Here's the scenario: Public Web Server hosts basic content for general public. Private server inside a VPN hosts special subscriber content and services. The two servers ...
3
votes
0answers
4k views

Bypassing Hotel Wifi authentication using VPN [closed]

I'm currently in a hotel with pay per day WiFi, I have have logged into it a couple of times on my phone. I just turned on my VPN before logging in to the WiFi and it seems to have bypassed the hotel ...
3
votes
1answer
513 views

Is Two-way SSL sufficient for Multiple web servers communicating to each other?

I have a fixed number of web servers. Each web server represents a company and the users of the company talk to their assigned web server. I have this setup to decentralise the databases. So if one ...
3
votes
0answers
268 views

Some http requests are not send encrypted by vpn! Why?

I subscribed to a VPN service recently, and installed wireshark to take a look at the traffic sent from my computer. Practically all of it goes through UDP protocol, encrypted. But there are two HTTP ...
3
votes
0answers
67 views

What's The Easiest Way To Maintain Remote Users Access to a Webapp

Here is a real world case: A chain of high schools (several hundreds) has many websites (~ 3x number of Schools) that are content driven by users (the students). Every school maintains about 2-4 ...
2
votes
3answers
1k views

Telnet and vpn - protected or not

I am curious how safe I am if I use telnet through a VPN-tunnel to my webhotel? I thought that the information was encrypted between my computer to the vpn-providers default-gateway. But when it ...
2
votes
6answers
12k views

Open VPN has DNS leak

Since using www.dnsleaktest.com I have found that any VPN service using Open VPN will leak my DNS through the tunnel. I have tried and tested several VPN providers, even those who say that they have ...
2
votes
4answers
158 views

How can VPN providers end violating accounts when “they don't log any data”?

VPN providers can end accounts which violate their terms of use. If you look at https://nordvpn.com/terms-of-service/ for example, you see that they will terminate accounts violating their ToS. The ...
2
votes
4answers
21k views

Can someone tell if you are using a VPN by your IP address?

I am wondering whether a website you are accessing can tell if you are using a VPN or not based on your IP address? I have done some Google research and it appears, that this is the case. However, I ...
2
votes
3answers
572 views

Can authentication in social networks through VPN defeat the purpose of the latter?

If a person uses VPN and authenticates herself to some social network through the VPN, doesn't she lose her anonymity for as long as the VPN session is used ? By losing her anonymity, I mean that her ...
2
votes
3answers
5k views

HTTPS or HTTPS within VPN for WIFI security?

I read that HTTPS can be comprimised and is not as safe as you think. With a free VPN you have to put some trust in a free VPN server with your data, and surely your data from when it leaves the vpn ...
2
votes
2answers
69 views

How safe is accessing HTTP traffic(non-SSL) when using VPN and connected to public WiFi?

Suppose I am using public WiFi and connected to my office network through VPN. I am accessing some applications which are not SSL enabled. How easy it is for an attacker to see the traffic if he is ...
2
votes
1answer
156 views

Is the VPN provider's ISP able to spy on traffic?

Traffic between a VPN client and a VPN server is encrypted on the client, and decrypted on the server. As the VPN server passes that traffic through the internet, can the VPN server's ISP see that ...
2
votes
2answers
229 views

Risk to self-signed SSL certificate on OpenVPN server

I am building an OpenVPN server in AWS for my organization with a DNS record pointing it to vpn.myOrgnization.com. SIDE NOTE: We have recently migrated all of our SSL certificates over to the new (...
2
votes
2answers
4k views

Can an employer see cellular network traffic routed through company-owned device?

When on the road, I have a company issued iPad with Verizon service, my personal ipad (wifi only version), and my iPhone. If I turn on the hotspot on my company iPad, then connect my personal ...
2
votes
3answers
629 views

How to spoof my IP address to JavaScript and other security concerns

Many websites require JavaScript. However, enabling JS means that a website can run a JS snippet to retrieve the user's IP address (even if they are behind a proxy or VPN). So, how can I (the user) ...
2
votes
2answers
307 views

Expose the source code repository externally or allow VPN access?

To allow third party consultants, offshore developers and contractors working on the code, we can expose our Git repository externally. Or we can grant VPN access to the external parties and limit ...