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 "ud"

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Port: 30/UDP
30/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
Port: 31/UDP
31/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • msg-auth
    MSG Authentication
    IANA
Port: 32/UDP
32/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
Port: 33/UDP
33/UDP - Known port assignments (2 records found)
  • Service
    Details
    Source
  • dsp
    Display Support Protocol
    IANA
  •  
    Display Support Protocol (Official)
    WIKI
Port: 34/UDP
34/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
Port: 35/UDP
35/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  •  
    any private printer server
    IANA
  •  
    Any private printer server protocol (Official)
    WIKI
  • priv-print
    any private printer server
    SANS
Port: 36/UDP
36/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  •  
    Unassigned
    IANA
Port: 37/UDP
37/UDP - Known port assignments (4 records found)
  • Service
    Details
    Source
  • time
    Time
    IANA
  •  
    TIME protocol (Official)
    WIKI
  • threat
    [threat] Dimi
    Bekkoame
  • threat
    [threat] W32.Sober
    Bekkoame
Port: 38/UDP
38/UDP - Known port assignments (1 record found)
  • Service
    Details
    Source
  • rap
    Route Access Protocol
    IANA
Port: 39/UDP
39/UDP - Known port assignments (3 records found)
  • Service
    Details
    Source
  • rlp
    Resource Location Protocol
    IANA
  •  
    Resource Location Protocol (RLP) - used for determining the location of higher level services from hosts on a network (Official)
    WIKI
  • threat
    [threat] Upfudoor
    Bekkoame
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About TCP/UDP ports

TCP port 30 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 30 in the same order in which they were sent. Guaranteed communication over TCP port 30 is the main difference between TCP and UDP. UDP port 30 would not have guaranteed communication as TCP.
UDP on port 30 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. UDP on port 30 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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