List of TCP/UDP Port numbers

Below is a list of TCP/UDP port numbers as it is used by Osmocom GSM related software.

L4 Port Number Purpose Software
UDP 2427 MGCP GW osmo-bsc_mgcp
TCP 3002 A-bis/IP OML OsmoBTS, OsmoBSC, OsmoNITB
TCP 3003 A-bis/IP RSL OsmoBTS, OsmoBSC, OsmoNITB
TCP 4240 telnet (VTY) OsmoPCU, osmo_pcap_client
TCP 4241 telnet (VTY) OsmoBTS, osmo_pcap_server
TCP 4242 telnet (VTY) OsmoNITB, OsmoBSC, cellmgr_ng
TCP 4243 telnet (VTY) osmo-bsc_mgcp
TCP 4244 telnet (VTY) osmo-bsc_nat
TCP 4245 telnet (VTY) OsmoSGSN
TCP 4246 telnet (VTY) osmo-gbproxy
TCP 4247 telnet (VTY) OsmocomBB
TCP 4249 Control Interface OsmoNITB/OsmoBSC
TCP 4250 Control Interface osmo-bsc_nat
TCP 4251 Control Interface OsmoSGSN
TCP 4252 telnet (VTY) sysmobts-mgr
TCP 4253 telnet (VTY) OsmoGTPHub
TCP 4254 telnet (VTY) OsmoCSCN (see also OsmoHNBGW)
TCP 4255 Control Interface OsmoCSCN (see also OsmoHNBGW)
TCP 4256 telnet (VTY) Osmo-sip-connector
TCP 4257 Control Interface OpenGGSN
UDP 4729 GSMTAP Almost every osmocom project
TCP 5000 A/IP osmo-bsc_nat
UDP 23000 NS-over-IP OsmoSGSN,OsmoPCU,osmo-gbproxy

See also:

Modifications should be kept in sync between this wiki page, the header files
and the osmo-gsm-manuals.