Ports 21000 to 21999
16 registered ports in this block, in numerical order. Open a port to see what uses it, how risky it is to expose and how to check it on your hosts.
| Port | Service | Transport | Category | Risk |
|---|---|---|---|---|
| 21000 | IRTrans Control irtrans | TCP UDP | Other services | - |
| 21010 | Notezilla.Lan Server notezilla-lan | TCP | Other services | - |
| 21212 | Distributed artificial intelligence trinket-agent | TCP | Other services | - |
| 21213 | Cohesity backup agents cohesity-agent | TCP | File transfer & sharing | - |
| 21221 | Services for Air Server aigairserver | TCP | Other services | - |
| 21337 | Xahau P2P network protocol xahaud | TCP | Other services | - |
| 21553 | Raima RDM TFS rdm-tfs | TCP | Other services | - |
| 21554 | MineScape Design File Server dfserver | TCP UDP | File transfer & sharing | - |
| 21590 | VoFR Gateway vofr-gateway | TCP UDP | Other services | - |
| 21800 | TVNC Pro Multiplexing tvpm | TCP UDP | Other services | - |
| 21801 | Safe AutoLogon sal | TCP | Other services | - |
| 21845 | webphone webphone | TCP UDP | Other services | - |
| 21846 | NetSpeak Corp. Directory Services netspeak-is | TCP UDP | Directory & authentication | - |
| 21847 | NetSpeak Corp. Connection Services netspeak-cs | TCP UDP | Other services | - |
| 21848 | NetSpeak Corp. Automatic Call Distribution netspeak-acd | TCP UDP | Other services | - |
| 21849 | NetSpeak Corp. Credit Processing System netspeak-cps | TCP UDP | Other services | - |