---
title: Linux Client Requirements
slug: ps/help/en_us/ics/com/vtcg/linux-client-requirements
docTags: 
createdAt: 2026-08-02T15:43:23.571Z
---

Linux clients signing in to VPN tunneling via **Mozilla Firefox** must ensure that the **OpenSSL** libraries are installed on the client. Most Linux versions come pre-packaged with OpenSSL. If you encounter a Linux user that does not have the required OpenSSL libraries, you can direct them to the following resource where they can be obtained and installed for free:

See http\://www\.openssl.org/related/binaries.html for details. (You can also advise users to compile their own version by directing them to the source at [http://www.openssl.org/source/ .) ](https://www.openssl.org/source/)The required version is **libssl.so.0.9.6b**.

:::hint{type="info"}
Install the full version of **OpenSSL**. The "**light**" version of **OpenSSL** will not work.
:::