Tag Archive for: OpenVPN

OpenVPN not working in Windows 11? 4 ways to get things on track

/in


Kazim Ali Alvi

Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows. And at times, unscrewing the device to take a look at the hardware, although… Read more

  • OpenVPN is a popular client, but users have been reporting that it’s not working in Windows 11.
  • This could be due to a third-party antivirus, Windows Defender Firewall, or the absence of critical services.
  • To fix the error, add an exception for OpenVPN in Windows Firewall, uninstall the antivirus, or try the other methods here.

Fix Open VPN not working in Windows 11

XINSTALL BY CLICKING THE DOWNLOAD FILE

To fix various PC problems, we recommend Restoro PC Repair Tool:
This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues and remove viruses now in 3 easy steps:

  1. Download Restoro PC Repair Tool that comes with Patented Technologies (patent available here).
  2. Click Start Scan to find Windows issues that could be causing PC problems.
  3. Click Repair All to fix issues affecting your computer’s security and performance
  • Restoro has been downloaded by 0 readers this month.

The popularity of VPNs has soared in recent years, owing to cyber threats and regional restrictions on accessing websites. Many users who went with the OpenVPN client reported that it’s not working in Windows 11.

This particularly happens when an installed third-party antivirus is blocking the VPN connection, or it could be the Windows Defender Firewall. Other than that, there are some critical services to be run in order to have a stable connection, so make sure these are running.

Now that you have a basic understanding of the underlying causes, let’s walk you through the most effective fixes for OpenVPN not working issue in Windows 11.

What do I do if OpenVPN is not working in Windows 11?

1. Add an exception to the firewall

  1. Press Windows + S to launch the Search menu, enter Allow an app through Windows Firewall in the text field, and then click on the relevant search result that…

Source…

HTTPS and OpenVPN face new attack that can decrypt secret cookies

/in

Enlarge / From an upcoming paper laying out a new attack against 64-bit block ciphers used by HTTPS and OpenVPN. (credit: Karthikeyan Bhargavan and Gaëtan Leurent)

Researchers have devised a new attack that can decrypt secret session cookies from about 1 percent of the Internet’s HTTPS traffic and could affect about 600 of the Internet’s most visited sites, including nasdaq.com, walmart.com, match.com, and ebay.in.

The attack isn’t particularly easy to carry out because it requires an attacker to have the ability to monitor traffic passing between the end user and one of the vulnerable websites and to also control JavaScript on a webpage loaded by the user’s browser. The latter must be done either by actively manipulating an HTTP response on the wire or by hosting a malicious website that the user is tricked into visiting. The JavaScript then spends the next 38 hours collecting about 785GB worth of data to decrypt the cookie, which allows the attacker to log into the visitor’s account from another browser. A related attack against OpenVPN requires 18 hours and 705GB of data to recover a 16-byte authentication token.

Impractical no more

Despite the difficulty in carrying out the attack, the researchers said it works in their laboratory and should be taken seriously. They are calling on developers to stop using legacy 64-bit block-ciphers. For transport layer security, the protocol websites use to create encrypted HTTPS connections, that means disabling the Triple DES symmetric key cipher, while for OpenVPN it requires retiring a symmetric key cipher known as Blowfish. Ciphers with larger block sizes, such as AES, are immune to the attack.

Read 7 remaining paragraphs | Comments

Technology Lab – Ars Technica