Block betternet vpn software#

Block the installation and execution of the UltraSurf application using domain-wide security policies.

This is still the case when UltraSurf sends out traffic directly to port 443 (HTTPS), or when UltraSurf is set to use an upstream proxy. The UltraSurf proxy sends outgoing traffic to HTTPS sites using IP addresses. Users then configure their browsers to point to the local proxy. UltraSurf is a proxy application installed locally on user's devices. This proxy uses a range of different ports (including 21, 25 and 53), you will need to lock down your firewall and only open ports that are necessary As long as firewall is locked down and high ports blocked it should not work. TCP and UDP ports: 500, 1194, 4500, 5228, 54783Īttempts to connect on port 80 or 443, so ensure that the HTTPS inspection policy is set to their Decrypt and inspect or Validate certificate only.Īttempts UDP 51820 connection first, otherwise it falls back to trying to use high ports. Will attempt to connect on port 80 or 443 so ensure that the HTTPS inspection policy is set to either Decrypt and inspect or Validate certificate only.

Will attempt to connect on port 80 or 443, so ensure that the HTTPS inspection policy is set to their Decrypt and inspect or Validate certificate only The following details ports predominately used by proxy bypass software: Proxy If this fails, then some applications have the ability to use other ports. Proxies will typically attempt to connect to their servers on port 80 or 443. If you are using the Smoothwall Firewall, you do this on the Firewall rules page, see our help topic, Adding new Smoothwall Firewall rules. However, this requires that the certificate used by the Filter is installed on each of the client machines, see our help topic, Managing HTTPS inspection settings.Īdditionally, you can control access to ports using a firewall. As an alternative, you can create an HTTPS inspection policy to Decrypt and inspect HTTPS requests through the web filter.This ensures that any site visited must present a valid HTTPS certificate. Create an HTTPS inspection policy that validate the certificate, see our help topic, Creating HTTPS inspection policies.You should add a block policy if you do not have one for either Web proxies or Core Blocked Content.

The Web proxies category is blocked by default as it is part of Core Blocked Content web filter policy, see our help topic, Managing web filter policies.

Block betternet vpn software#

Note: This might cause issues for other software applications which do not have support for this type of setup.

Make sure that all clients are going through a transparent proxy with HTTPS support enabled, see our help topic, Creating authentication policies.

As more and more proxies are created on a daily basis, each becoming more complex and more efficient at bypassing web filters, simply blocking access to these services using domain or URL filtering alone is not particularly efficient. Because HTTPS traffic is encrypted, the content can't be seen by web filters and therefore no policies can be applied to the content. When someone uses a proxy website or application to request content, the proxy will contact a server which will then retrieve the requested content before returning it to the user, typically through an HTTPS connection. UltraSurf is one example of an application that bypasses web filters to gain access to sites that would otherwise be blocked. This has led to the creation of numerous proxy websites and proxy software applications designed to bypass web filters such as Guardian.

Web filters are becoming increasingly popular, and are used to restrict a user's internet access to certain types of content. You can use the Smoothwall Filter and Firewall to block access to HTTPS proxy sites or prevent HTTPS proxy software like UltraSurf bypassing the Smoothwall Filter.