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Port 5555 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
5555 tcp ms-crm SoftEther VPN (Ethernet over HTTPS) uses TCP Ports 443, 992 and 5555

Port also used by Freeciv gaming protocol. , InfoSeek Personal Agent, HP OpenView Storage Data Protector (formerly HP OmniBack)

RainMachine automatic irrigation control uses this port.

Backdoor.Darkmoon.E (2007-09-25) - a Trojan horse that opens a back door on TCP port 5555 on the compromised computer.

Some other trojans also use this port Backdoor.Sysbug, Noxcape, W32.MiMail.P, Daodan, Backdoor.OptixPro, ServeMe.

HP OpenView OmniBack 2.55 allows remote attackers to cause a denial of service via a large number of connections to port 5555.
References: [CVE-2000-0179] [BID-1015]

The Backup Client Service (OmniInet.exe) in HP Storage Data Protector 6.2X allows remote attackers to execute arbitrary commands or cause a denial of service via a crafted EXEC_BAR packet to TCP port 5555, aka ZDI-CAN-1885.
References: [CVE-2013-2347], [OSVDB-101626]

HP Data Protector could allow a remote attacker to execute arbitrary commands on the system. By sending a specially-crafted request to TCP port 5555, an attacker could exploit this vulnerability to execute arbitrary commands on the system.
References: [XFDB-94504]

Microsoft Dynamics CRM 4.0. (IANA official)
5555 tcp Freeciv versions up to 2.0, Hewlett Packard Data Protector, SAP (unofficial) Wikipedia
5555 tcp trojan Daodan, NoXcape Trojans
5555 udp trojan Daodan Trojans
5555 tcp,udp personal-agent Personal Agent. Port also used by HP Omniback. Unauthorized use by Intermec UDPPlus IANA
5555 tcp,udp personal-agent Personal Agent SANS
5555 tcp ServeMe [trojan] ServeMe SANS
5555 udp rplay SANS
5555,6500 udp applications Rush for Berlin Portforward
3390,3932,5555 tcp applications XBox 360 Media Center Portforward
5555 tcp freeciv freeciv Nmap
5555 udp rplay rplay Nmap
5555 udp sbm-comm SGI Space Boulders game Neophasis
5555 tcp threat OptixPro Bekkoame
5555 tcp threat Sysbug Bekkoame
5500-5699 tcp applications MOHAA Reverend Portforward
16 records found
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Related ports: 443  992  

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External Resources
SANS Internet Storm Center: port 5555

Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol. TCP is the most commonly used protocol on the Internet and any TCP/IP network. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP.

UDP ports use the Datagram Protocol, a communications protocol for the Internet network, transport, and session layers. Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) and makes possible the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming, where dropping some packets is preferable to waiting for delayed data.

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