Sometimes, the official NetAcad portal is inaccessible due to:

(Official)

The official, secure way to download Cisco Packet Tracer is through the Cisco Networking Academy (SkillsForAll). Downloading from unofficial GitHub repositories carries significant security risks, as these files could contain malware. How to Download Safely (Official Method)

: Once logged in, you can download installers for Windows , macOS , or Linux (Ubuntu) . Why You Might See GitHub Links

: Redistributing Cisco's proprietary binaries on GitHub technically violates their licensing agreement. How To Download Cisco Packet Tracer