If you need to access a modern internal server, you cannot. Firefox 3.6 does not support TLS 1.2. You must install a proxy like LegacyProxy or PolarProxy on your network to downgrade the connection (not recommended for public internet).
Released in 2010, Firefox 3.6 was a milestone that introduced features we now take for granted: download old version of mozilla firefox 3.6
This version was released in 2010. It lacks modern protection against malware and phishing. Web Compatibility: If you need to access a modern internal server, you cannot
: Select your preferred language code (e.g., en-US for English-United States). Download the Installer : For Windows, click Firefox Setup 3.6.exe . For Mac, click Firefox 3.6.dmg . Installation & Critical Precautions Mozilla Firefox 3.6.27 Release Notes Released in 2010, Firefox 3
Before you install Firefox 3.6, you must understand the risks involved. Browsers are your first line of defense against online threats, and 3.6 is no longer defended.