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Port 5678 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
5678 tcp,udp rrac Port used by Linksys (and other) Cable/DSL Routers Remote Administration

Vulnerable systems: Linksys Cable/DSL version 1.42.7 (BEFSR11 / BEFSR41 / BEFSRU31)
Immune systems: Linksys Cable/DSL versions prior to 1.42.7 (BEFSR11 / BEFSR41 / BEFSRU31)

SNATMAP server also uses this port to ensure that connections between iChat users can properly function behind network address translation (NAT).

Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial of service (application abort) and possibly execute arbitrary code via a flood of invalid characters to the RTCP port (5678/udp) that triggers a Windows error message, a.k.a. "extraneous messaging."
References: [CVE-2007-5636] [BID-26118]

WellinTech KingHistorian 3.0 allows remote attackers to execute arbitrary code or cause a denial of service (invalid pointer write) via a crafted packet to TCP port 5678.
References: [CVE-2012-2559]

Linksys EtherFast Cable/DSL BEFSR11, BEFSR41 and BEFSRU31 with the firmware 1.42.7 upgrade installed opens TCP port 5678 for remote administration even when the "Block WAN" and "Remote Admin" options are disabled, which allows remote attackers go gain access.
References: [CVE-2002-2159] [BID-4987]
5678 tcp,udp rrac Remote Replication Agent Connection IANA
5060, 5190, 5297, 5298, 5353, 5678, 16384-16403 udp applications iChat Portforward
5678 tcp threat Port 5678 is the default port for the com.hp.util.rcat Java package (from Hewlett-Packard). This is a simple debugging package. Bekkoame
5678 tcp,udp threat A frequent port some picks at random. Bekkoame
5678 tcp,udp threat A port for remote execution using the crexd/srexd services. Bekkoame
5678 udp threat osagent communication Bekkoame
5678 tcp,udp Port 5678 was originally specified for the PPTP protocol, but when the standard was ratified, port 1723 was chosen instead. Bekkoame
5500-5699 tcp applications MOHAA Reverend Portforward
9 records found
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Related ports: 555  2001  8001  1723  

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External Resources
SANS Internet Storm Center: port 5678

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.

Please use the "Add Comment" button below to provide additional information or comments about port 5678.
  User Reviews/Comments:
by Twanislas - 2016-04-04 12:06
There is also :
5678/udp Mikrotik Neighbor Discovery Protocol
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