TCP/UDP Port Finder

Enter port number (e.g. 21), service (e.g. ssh, ftp) or threat (e.g. nimda)
Database updated - March 30, 2016

Search results for "relay"

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Port: 99/UDP
99/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • metagram
    Metagram Relay
    IANA
Port: 99/TCP
99/TCP - Known port assignments (8 records found)
  • Service
    Details
    Source
  • metagram
    Metagram Relay
    IANA
  •  
    WIP Message protocol (Unofficial)
    WIKI
  • threat
    [threat] Hidden Port
    Bekkoame
  • threat
    [threat] NCX
    Bekkoame
  • hiddenport
    [trojan] Hidden Port
    SANS
  • hidden
    [trojan] Hidden
    SANS
  • mandragore
    [trojan] Mandragore
    SANS
  • ncx
    [trojan] NCX
    SANS
Port: 194/UDP
194/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • irc
    Internet Relay Chat Protocol
    IANA
  •  
    Internet Relay Chat (IRC) (Official)
    WIKI
Port: 194/TCP
194/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • irc
    Internet Relay Chat Protocol
    IANA
  •  
    Internet Relay Chat (IRC) (Official)
    WIKI
  • irc
    Internet Relay Chat
    SANS
Port: 366/TCP
366/TCP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • odmr
    ODMR
    IANA
  •  
    ODMR, On-Demand Mail Relay (Official)
    WIKI
  • odmr
    -
    SANS
Port: 366/UDP
366/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • odmr
    ODMR
    IANA
  •  
    ODMR, On-Demand Mail Relay (Official)
    WIKI
  • odmr
    -
    SANS
Port: 391/TCP
391/TCP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • synotics-relay
    SynOptics SNMP Relay Port
    IANA
Port: 391/UDP
391/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • synotics-relay
    SynOptics SNMP Relay Port
    IANA
Port: 912/TCP
912/TCP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • apex-mesh
    APEX relay-relay service
    IANA
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
Port: 912/UDP
912/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • apex-mesh
    APEX relay-relay service
    IANA
  • ipcserver
    Mac OS X RPC-based services. Used by NetInfo, for example.
    Apple
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About TCP/UDP ports

TCP port 99 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 99 in the same order in which they were sent. Guaranteed communication over TCP port 99 is the main difference between TCP and UDP. UDP port 99 would not have guaranteed communication as TCP.
UDP on port 99 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 99 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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