Known Used Ports

Function	Default Port	Default	Notes
IPC	39000-39999	On	Required for online assessments and user created extensions. The first Packet Tracer instance will listen on port 39000, subsequent instances will listen on the next available port increment.
SFA Authentication	8001	On	Required for OAUTH authentication when using SFA login button.
Multiuser	38000-38999	Off	Optional, used for connecting to other Packet Tracer instances or real devices. The first Packet Tracer instance will listen on port 39000, subsequent instances will listen on the next available port increment.
Network Controller Real World Server	58000	Off	Optional, used for accessing the Network Controller outside of the simulation.
Scripting Server Sockets	*	Off	Optional, the user can write scripts to listen on any port allowed by the operating system. Packaged sample files include HTTP Servers (8765) and TCP Servers (1234). However, users can program their devices to listen on any port. Files that are not signed by Cisco will prompt the user when they are opening a file that creates server sockets.

Function	Default Port	Notes
Login	80, 443	Required, Login uses these ports.
Online Assessments	80, 443	Required, PTSA online assessments uses these ports.
User Scripts	*	Optional, users can write scripts that send UDP, TCP, or HTTP data to any user defined destination port. Sample files included in Packet Tracer typically uses port 80 and 443..

To take advantage of all Cisco Packet Tracer features, are required administrative privileges. Installing Packet Tracer requires administrative permissions. Administrative permissions are required to associate file extensions, setup URI associations for online assessments, and installation into common directories for multiple user support. After installation, administrator accounts are not required to use Packet Tracer.

Although unsupported, it is possible to use Packet Tracer without installing it. The user can make a copy of the extracted or installed Packet Tracer program directory and run it from a USB drive or their own user directories. However, depending on the platform, the functionality will be limited. On Windows, online assessments and PKT/PKA files does not work. All functionality should work as expected on Macs. On Linux, while possible, it is out of scope of this document to easily create a functional portable version.