a Virtual Private Network is a private network that is built upon a public network, typically using encryption for to secure the private communication.

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IPSec VPNs and symmetric keys

When dealing with IPSec based VPNs, I understand that there is a slight "problem" with symmetric key exchange. Obviously, you can't send the keys over the VPN, since they are used to guarantee the ...
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1answer
492 views

What is the difference between an HTTPS traffic setup with Stunnel and a SSL-VPN

We have a scenario where we cannot connect to our stunnel server running on port 443 on our network, which only allows access to Internet via a proxy server. On the contrary, when we tried a SSL VPN ...
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2answers
2k views

How is a website determining my location even via VPN? [duplicate]

I'm currently in China, and accessing the Internet via a VPN in the USA. When I access Google maps or other location-based web services, they all show my location as that of the VPN server. However, ...
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1answer
315 views

Is there a way to get OS X to start a VPN connection before allowing network traffic? [closed]

I'm running OS X 10.8 and have Tunnelblick set up so I can connect to my OpenVPN server at home. I've also used this at $WORK in the past. When I'm out and about and want to jump on a public network, ...
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3answers
525 views

Once VPN is unplugged can work still monitor?

Work provides people from my company that 'work at home' with a separate VPN router which will be plugged into my existing home router. They have also asked for the router model, username and ...
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1answer
85 views

Where else is IPSec used, besides with VPNs? [closed]

IPSec is most commonly used to secure VPN traffic. Where else is this protocol suite used? What else can it be used for?
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1answer
1k views

Is my computer being hacked? How can wireshark reveal if I am being hacked? [closed]

So last night I was using openVPN via my personal cloud server to watch some Hulu. About 15 minutes into the movie I noticed my network stats were download: ~250 MB upload: ~1.8 GB This is ...
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2answers
4k views

How can using a VPN increase network speed? [closed]

There are lots of guides online which suggest that using a VPN or proxy will gain better speed or 'free internet' however this seems unlikely. If my ISP is performing packet shaping on my connection. ...
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1answer
66 views

Remote network security option

I'm a bit confused with some different network security techniques. Say we want a secure communication with a particular mail server in a remote company network. Reading and sending mails should be ...
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2answers
625 views

I'm being followed on the web. Explanations for mysterious behavior

Am I being stalked? I was recently doing some basic Python development scripting. Python has a nice feature where it can run a simple HTTP server that serves the contents of the local directory, on ...
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3answers
263 views

The safest way to circumventing Iran's Internet censorship

We usually buy services like VPN, SOCKS, Kerio [Kerio Connect?]... to circumvent Iran's Internet censorship policy. Recently, one of the shops started selling [one of] Kerio's products, for which I do ...
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1answer
566 views

IPSec AH + ESP used together

When ESP and AH are used together (ESP transport, AH transport) on the same packet does ESP encrypt the AH's hash, or is the hash left in the clear? If the hash isn't encrypted, there are obviously ...
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How can encrypted traffic bypass the Great Firewall of China when it is being blocked?

The Great Firewall of China is controlled by the government and has put in place a "learning algorithm" to block unapproved encrypted traffic. The only way to get encrypted traffic through the ...
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2answers
286 views

How do I ensure that a VPS host will keep my information private?

Basically, I want to use OpenVPN on a VPS to browse confidentially. However, I don't know much about VPS hosters and to me, it seems to be a hard choice because there are so many. However, I think ...
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3answers
708 views

Sniffing on VPN configuration

Our company wants to implement a service based on sniffing for security purposes, since we manage important information this requirement is imperative. The situation is as follows. Everyone in the ...
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1answer
76 views

VPN using SmartPhone Location

When you VPN using your smartphone as a hotspot, can the VPN tell your location like it can when you VPN over a wireless connection hotspot?
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2answers
5k 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 ...
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3answers
739 views

What is the difference between encrypted data and data sent through an encrypted tunnel

I am looking at different VPN protocols. [1] L2TP does not provide encryption so require IPSec to encrypt the data [2] IPSec tunnel provide encryption to the tunnel What is the difference in terms ...
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5answers
379 views

Does using ssl matter if I am connected using a VPN?

Say I have an internal server that I am using for source control. If I only access that server through a VPN connection, do I still need to have SSL setup on the source control server to ensure that ...
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3answers
1k views

Could I delete .csr files when the key is signed by CA

I'm creating my own openvpn server. The Certificat authority is located on a separated host. There is two kind of clients: which that just send a .csr and to which i send the .crt as an answer and ...
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3answers
553 views

Does the VPN provider know my dedicated IP?

Is it ok for a VPN provider to ask a new costumer to send a log file in order to solve a login probelm? I trusted him and sent him a log file because he said that would be the best way to see why i am ...
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1answer
437 views

What's most standard way to secure internet connections and protect privacy?

It's common knowledge that Wi-Fi, or other Internet connections, should be encrypted via a VPN to be secure, and to hide our real IP address from intermediary network observers. However, one can't ...
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1answer
6k views

How to install Cisco VPN Client on Windows 7 64bit [closed]

I have Win7 64bit. Have Cisco VPN Client winx64-msi-5.0.07.0440-k9. Now i try to install it. But after i click first "Next" button in istaller i get error: "installation ended prematurely because of ...
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1answer
747 views

OpenVPN through company proxy and surfing history

Been trying to find an answer to no avail. Probably I just don't understand the terminology... So if anyone may shed some light in plain English, that would be awesome. I connect to a paid VPN ...
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4answers
4k 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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2answers
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When connecting to internet through VPN what precautions should be taken?

I've read this similar question and it has some very good information. Can a site that has personal information about you be accessed by another site to determine who you are/where you are? For ...
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4answers
8k 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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2answers
421 views

Ordering of shared Phase 1/ISAKMP VPN policies

The various Phase 1 settings of a VPN tunnel policy are fairly well-established (encryption, hashing, DH group, lifetime), but in what order are they considered applicable to a more-secure tunnel? I ...
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2answers
936 views

Best practices for operating a Bitcoin-Qt client regarding netwok privacy?

As privacy is part of security, I know there is a Bitcoin SE here but they couldn't answer my question so I hope it's appropriate to ask it here. I don't ask about how to secure my wallet on my ...
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3answers
191 views

Are intermediate signing certs the only secure+practical way to manage OpenVPN client certs?

My organization needs to issue (and revoke) OpenVPN client certificates for people working remotely. Our system is based on a standard OpenSSL CA setup and the easy-rsa tools, and the whole directory ...
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1answer
4k views

How can I tell if a PPTP tunnel is secure?

PPTP has been demonstrated to be broken in many ways, and most installations are insecure. But it is also theoretically not broken if configured correctly. As an end-user, is there a simple way for ...
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2answers
173 views

How does the predator network prevent outside control by an attacker?

I read several articles saying some of the command and control fleet for the US robotic attack planes may have been infected with a virus. Does this command and control system communicate with the ...
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1answer
348 views

Can p2p use be traced by targeting a known individual rather than an offending IP Address?

My understanding of most filesharing lawsuits initiated by copyright holders is as follows: The monitoring agency will connect to a torrent swarm and collect the ip addresses of people downloading ...
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1answer
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What are darknets, and how can they be used to provide security and anonymity in network communication?

One of the major problems with the internet is that it's difficult to stay anonymous while retaining the ability to communicate with a large number of people. While encryption can be done effectively ...
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3answers
795 views

How do a VPNs route SSL traffic and do they compromise security?

If my understanding of how VPNs operate is correct, all traffic between me and the Internet at-large is routed through the VPN's servers. So an attacker would only be able to see encrypted traffic ...
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1answer
470 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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1answer
166 views

Anonymous access over SSL

I am using a paid VPN service and I just realized IP privacy does not exist at all when the connection is made over SSL. If I Google "what is my ip" using the HTTP version of Google, it will give me ...
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1answer
2k views

Is it secure to install RSA SecurID Software Tokens on the same computer that will be used to access the VPN?

My office switched from using the old hardware RSA SecurID key tokens to the RSA SecurID Software Tokens and most users have them installed on the same machines they use to access the VPN. I asked ...
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2answers
355 views

Test Android Secure Encrypted Traffic

For testing android traffic encryption I have configured a VPN client in my phone. What simple test I can perform in my home wifi network to verify that the traffic is really encrypted and secure?
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1answer
752 views

OpenVPN Why CBC mode is recommended?

I just set up my installation of OpenVPN on my server. I am curious why the OpenVPN manual recommends CBC mode. I heard that CBC is predictable and not secure; is that true?
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5answers
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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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3answers
1k 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 ...
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1answer
668 views

Can I used Google Authenticator with Radius and VMwareview

We're looking to add 2 factor and one of the options is google authenticator and I was wondering if we can attach that to a radius server attached to our VM infrastructure for remote access. All ...
4
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3answers
183 views

How can an outsider tap into communications between two physical sites?

When referring to 'Sites' - I am not talking about a website, but of a physical place where a company resides. Today, to secure communications between two sites - Let's say between an office in ...
14
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6answers
1k views

Safe to make a VPN connection over coffee shop WIFI?

On my work laptop I regularly create a VPN connection that I use to remote desktop to our web server. Is this safe to do on a coffee shop where random people are connected to the same wifi network?
3
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3answers
302 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
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1answer
303 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 ...
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2answers
558 views

Is a VPN the only way to protect against rogue Wifi access points MITM attacks?

Given that it's very easy set up a rogue access point and MITM that connection, is a VPN to a trusted host the only real way to secure my browsing and other TCP/UDP actions? This question relates to ...
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2answers
1k views

L2TP/IPsec shared secret: Can it be public?

My university provides a VPN service to gain access to internal services to all members. They are apparently using an L2TP/IPsec solution by Cisco. I'm able to connect just fine, but I'm a bit ...
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4answers
876 views

How to keep secure while browsing on open wifi when SSL VPN is blocked?

After a recent visit to a hotel I was surprised to discover that they blocked access to my OpenVPN server. I often use this as a way to secure my internet traffic when I am on public wireless. ...