TCP/UDP Port Finder

Enter port number (e.g. 21), service (e.g. ssh, ftp) or threat (e.g. nimda)
Database updated - August 26, 2014

Search results for "unassigned"

Port: 26917/UDP
26917/UDP - Known port assignments (1 record found)
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    Unassigned
    IANA
Port: 26918/TCP
26918/TCP - Known port assignments (1 record found)
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    Details
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    Unassigned
    IANA
Port: 26918/UDP
26918/UDP - Known port assignments (1 record found)
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    Unassigned
    IANA
Port: 26919/TCP
26919/TCP - Known port assignments (1 record found)
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    Unassigned
    IANA
Port: 26919/UDP
26919/UDP - Known port assignments (1 record found)
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    Unassigned
    IANA
Port: 26920/TCP
26920/TCP - Known port assignments (1 record found)
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    Unassigned
    IANA
Port: 26920/UDP
26920/UDP - Known port assignments (1 record found)
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    Unassigned
    IANA
Port: 26921/TCP
26921/TCP - Known port assignments (1 record found)
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    Unassigned
    IANA
Port: 26921/UDP
26921/UDP - Known port assignments (1 record found)
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    Unassigned
    IANA
Port: 26922/TCP
26922/TCP - Known port assignments (1 record found)
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    Details
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    Unassigned
    IANA

About TCP/UDP ports

TCP port 26917 uses the Transmission Control Protocol. TCP is one of the main protocols in TCP/IP networks. TCP is a connection-oriented protocol, it requires handshaking to set up end-to-end communications. Only when a connection is set up user's data can be sent bi-directionally over the connection.
Attention! TCP guarantees delivery of data packets on port 26917 in the same order in which they were sent. Guaranteed communication over TCP port 26917 is the main difference between TCP and UDP. UDP port 26917 would not have guaranteed communication as TCP.
UDP on port 26917 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 26917 thinks that error checking and correction is not necessary or performed in the application, avoiding the overhead of such processing at the network interface level.
UDP (User Datagram Protocol) is a minimal message-oriented Transport Layer protocol (protocol is documented in IETF RFC 768).
Application examples that often use UDP: voice over IP (VoIP), streaming media and real-time multiplayer games. Many web applications use UDP, e.g. the Domain Name System (DNS), the Routing Information Protocol (RIP), the Dynamic Host Configuration Protocol (DHCP), the Simple Network Management Protocol (SNMP).
TCP vs UDP - TCP: reliable, ordered, heavyweight, streaming; UDP - unreliable, not ordered, lightweight, datagrams.
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