555 - System Port | Service Name:dsf

555 is a System Port. Transport Protocol TCP , 555 Service Name dsf, Service Name Description: .

Port	Protocol	Service Name	Description	Source
555	TCP	dsf		IANA
555	UDP	dsf		IANA
555	TCP UDP		Ini-Killer, NeTAdministrator, Phase Zero, Stealth Spy	emsisoft
555	TCP		711, Ini-Killer, Net Administrator, Phase Zero, Phase-0, Stealth Spy	anti-trojan
555			Ini-Killer , Net Administrator, Phase Zero, Phase-0, Stealth Spy	sans.org
555			711 trojan (Seven Eleven), Phase Zero, Phase-0	simovits.com
555	TCP UDP	dsf		bekkoame
555	TCP UDP		711 trojan (Seven Eleven)	bekkoame
555	TCP UDP		Ini-Killer	bekkoame
555	TCP UDP		Net Administrator	bekkoame
555	TCP UDP		Phase Zero	bekkoame
555	TCP UDP		Phase-0	bekkoame
555	TCP UDP		Stealth Spy	bekkoame
555	TCP UDP		Trojan: phAse Zero	bekkoame

Port	Service Name	Description
764	omserv
896		Unassigned
3967	ppsms	PPS Message Service
4774		Unassigned
4914	bones	Bones Remote Control
5679	dccm	Direct Cable Connect Manager
6322	emp-server2	Empress Software Connectivity Server 2
7454		Unassigned
7455		Unassigned
7493		Unassigned

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