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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6k 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 ?
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3answers
231 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 ...
2
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2answers
552 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 ...
2
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1answer
721 views

Analyzing wireshark results (openvpn)

I signed up to Mullvad for VPN service, and manually run OpenVPN from my Linux box. I rebooted my computer and make sure not to start any OpenVPN service. Yet when I did a Wireshark analysis I am ...
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2answers
865 views

ISP role with VPN & VPS?

I have notice online that many people get a VPN so that ISP can not view the sites you visit, create a profile of you and so on. Reading How safe is it to connect to Internet through VPN?, Jonah ...
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2answers
6k 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
79 views

Is there any point to connecting to a VPN server while on the local network?

I plan on installing a VPN server on one of my computers that is running Ubuntu for purposes of connecting to my local network while I am not at home. At home I also have a desktop computer (separate ...
2
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1answer
167 views

PFS incentive during IKE Phase 2

I'm trying to see the actual point in implementing Perfect Forward Secrecy during Internet Key Exchange Phase 2, if it had already been used during Phase 1. Quoting the IKEv2 RFC: RFC 5596 ...
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2answers
298 views

How does VPN (IPSec) work?

Let's assume both, my VPN client and VPN gateway has public and private keys. I encrypt my request with VPN gateway's public key. VPN gateway gets the request, decrypts it with private key. Then, VPN ...
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2answers
171 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 ...
2
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1answer
146 views

How does tunneling actually work?

I recently saw a question in which someone implied that tunneling could foil MITM even if it were implemented while an MITM was taking place. My understanding of tunneling is that it is only capable ...
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2answers
471 views

What order is best for nesting VPNs?

if anyone is available to give me advice on a VPN situation I'd appreciate it. So the story is, I have one Swedish VPN which I trust not to log, and which I've connected to with my real IP, and I've ...
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1answer
70 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 ...
2
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1answer
736 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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2answers
1k views

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 ...
2
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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
639 views

Low level attacks on WLAN/LAN connection while connected to VPN

Is it really secure to connect to a (well-secured) VPN server over an unencrypted WLAN connection (or maybe a hotel Ethernet)? I know, that there have been questions like this - but I'm not asking ...
2
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1answer
78 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 ...
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0answers
97 views

Can HTTPS or VPN connection be sniffed through UTM device? [duplicate]

Someone told me that if my device communicates with a server on Internet via VPN connection or HTTPS, all the contents that I have sent can be sniffed and decrypted by the UTM device (or more ...
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0answers
85 views

Duration of torrent activity and ISP tracking [closed]

The only reason I use BitTorrent is to download Linux distros, Open source apps and large documentation files. My ISP contacted me once and warned me: Ok, you aren't downloading anything illegal ...
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3answers
604 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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3answers
1k 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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4answers
3k 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 ...
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3answers
388 views

Client side scripts through proxies

If you're trying to hide your IP address using VPN/proxies can a website using client side scripting record your real ip? If yes is there any alternative to blocking all scripts as that breaks ...
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3answers
1k views

What utilities exist to brute force a username and password?

I'm trying to persuade management to purchase two factor authentication for securing VPN and terminal server access. I've made significant progress by demoing TSGrinder, but would like to list other ...
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2answers
177 views

OpenSSL, x509: what is the correct way to picture signing authorities?

For the purposes of creating a VPN, I can't find a logical explanation of OpenSSL's/x509 scheme. I'm royally confused about these three terms, Certificate Authorities Gateway certificates End-point ...
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3answers
2k 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
178 views

Setting up a ram based VPN

Are there any ram based VPN solutions that have options to keep no logs? I've been looking to set up a portable linux distro, probably Debian, that I'd run from CD without any form of persistence. It ...
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2answers
3k views

OpenSSL, x509: what's the significance of CN (Common Name)?

With regard to these three items Certificate Authorities (CA) Gateway certificates End-point Certificates (client-cert) What is the significance of the Common Name CN with regard to the a VPN? ...
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3answers
97 views

Howto pass overly protective corporate firewall

My Corporate Network was always being monitored, but a few days ago they started to block and censor all HTTPS traffic. Recently IT guys forged certificates for all major HTTPS web sites and acts as a ...
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4answers
1k views

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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2answers
221 views

Securing a VPN connection

I'm new to this we want to install a new VPN connection that will be used to connect using Internet to some networks in the office the contractor want to use a" Cisco NAC Network Module or Cisco IPS ...
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2answers
91 views

VPN over HTTPs for a web service only

I have a web service (PHP & MySQL on Ubuntu 12.04) running in a corporate intranet. I have also connected it to internet through a firewall letting incoming connections on HTTPs only (port 443). ...
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1answer
3k views

TLS v1.0 best cipher for OpenVPN setup

I'm trying to setup OpenVPN with as much security as I can. I'm in the process of selecting a cipher for OpenVPN. Which is the safest one, tls-cipher DHE-RSA-AES256-SHA or tls-cipher AES256-SHA? I've ...
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1answer
414 views

Openvpn in front of proxy? [closed]

I have been reading books on OpenVPN, and there is one thing I don't understand yet. What happens when a person connects to OpenVPN, and their web browser is set to a Socks5 or HTTP/HTTPS proxy and ...
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1answer
799 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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1answer
718 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 ...
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1answer
3k views

What are the risks of removing ISATAP from the default global block list?

The process of installing Microsofts pseudo VPN called Direct Access requires me to remove the ISATAP name from the default global block list by running this command: dnscmd /config ...
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1answer
49 views

VPN disconnection and snooping

When you use VPN, what happens if the VPN server goes offline? Would Windows silently revert to using your LAN connection, without notifying you? This would be an OK behavior if you use VPN to access ...
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1answer
79 views

Practical way to communicate a pre-shared key?

Company A needs to set up an IPsec VPN with company B, where each side will configure its own devices. Is there a recommended practical and quick way to communicate a pre-shared key from A to B? I ...
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1answer
140 views

Secure connection between two clients inside a wifi without internet connection

I'm currently trying to understand secure connections inside a WiFi network without an Internet connection. I would like to use some sort of SSL tunneling inside a WiFi network between two clients. ...
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2answers
170 views

Idea for hiding your mobile phones' location, and still be able to place and receive calls. Any suggestions?

The diagram below is a thought experiment that could provide a certain level of privacy to mobile (smart)phone users, beyond what they currently have. Some of it is purely theoretical, but it should ...
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1answer
568 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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1answer
458 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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3answers
735 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
135 views

Browsec - VPN and anonymizer

According to Browsec's website this application can be used to Bypass firewalls. So in countries like Iran it seems a useful tool to bypass censorship and filtering. For start using this application ...
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1answer
60 views

How to post comments on websites without being traced back

Just trying to get some general sense about the security on internet now-a-days. There are so many websites I go and comment on different things. If some comments are political and they don't like, I ...
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2answers
95 views

Repercussions of hacked router?

I am staying in Thailand right now on a "long holiday" to do some work on my laptop. A few weeks I noticed that at the condo where I am staying, sometimes I am redirected to ad sites. I researched it ...
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1answer
129 views

how to continuously caputre all my network traffic? [closed]

I've got a Linux desktop that will be a gateway between my private network and the open internet. I'd like it to capture and store all network traffic passing through it continuously, 24/7 (until the ...
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2answers
156 views

Is QuickVPN Secure

Does QuickVPN create a secure tunnel or how does it work to provide encryption and security? When I did a see my IP it was using the remote locations IP and not my office network's IP so does that ...