6835 Unassigned - User Port

6835 is a User Port. Transport Protocol , 6835 Service Name , Service Name Description: Unassigned.

Port	Protocol	Service Name	Description	Source
6835			Unassigned	IANA

Port	Service Name	Description
1130	casp	CAC App Service Protocol
1387	cadsi-lm	Computer Aided Design Software Inc LM
2478	ssm-cssps	SecurSight Authentication Server (SSL)
3971	lanrevserver	LANrev Server
5191	aol-1	AmericaOnline1
6273		Unassigned
6303		Unassigned
6578		Unassigned
6779		Unassigned
7349	swx	The Swiss Exchange

A port is an endpoint of communication in an operating system. While the term is also used for hardware devices, in software it is a logical construct that identifies a specific process or a type of service.

Port numbers are assigned in various ways, based on three ranges: System Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private Ports (49152-65535);

The Well Known Ports are assigned by the IANA and on most systems can only be used by system (or root) processes or by programs executed by privileged users. Ports are used in the TCP [RFC793] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers, a service contact port is defined. This list specifies the port used by the server process as its contact port. The contact port is sometimes called the "well-known port". To the extent possible, these same port assignments are used with the UDP [RFC768]. The range for well-known ports managed by the IANA is 0-1023.
DYNAMIC AND/OR PRIVATE PORTS Registered Ports are those from 1024 through 49151.
The Dynamic and/or Private Ports are those from 49152 through 65535