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Port 27000 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 27000 |
tcp,udp |
games |
id Software's QuakeWorld master server
FLEXlm (Network License Manager) uses ports 27000-27009 tcp.
Autodesk Network License Manager (adskflex.exe) also needs port 2080 tcp in addition to 27000-27009.
Citrix License Server uses ports 7279 and 27000 TCP.
Ports 27000+ are used by some online games:
Team Fortress 2, Day of Defeat, Counter Strike use ports 27000-27015
Left 4 Dead 2 (Valve software) uses ports 27000-27040
Vindictus MMORPG (devCAT/Nexon) uses ports 27000-27025, 36567, and 47611 tcp/udp
Steam (Valve gaming platform) uses these ports:
27000-27015 udp (Steam client game client traffic)
27015-27030 tcp/udp (typically matchmaking and HLTV, also used to download Steam content)
27031 udp, 27036 tcp/udp, and 27037 tcp (incoming for in-home streaming)
3478 udp, 4379 udp, 4380 udp (outbound - Steamworks P2P networking and voice chat)
4380 udp (Steam client)
Saturn Remote Mouse Server contains a command injection vulnerability that allows unauthenticated attackers to execute arbitrary commands by sending specially crafted UDP JSON frames to port 27000. Attackers on the local network can send malformed packets with unsanitized command data that the service forwards directly to OS execution functions, enabling remote code execution under the service account.
References: [CVE-2026-27182] |
SG
|
| 27000-27050 |
tcp,udp |
games |
Ports 27000 to 27050 are typically used by some online games.
Steam (Valve gaming platform) uses these ports:
27000-27015 udp (Steam client game client traffic)
27015-27030 tcp/udp (typically matchmaking and HLTV, also used to download Steam content)
27031 udp, 27036 tcp/udp, and 27037 tcp (incoming for in-home streaming)
3478 udp, 4379 udp, 4380 udp (outbound - Steamworks P2P networking and voice chat)
4380 udp (Steam client) |
SG
|
| 27000-27006 |
udp |
|
id Software's QuakeWorld master server (unofficial) |
Wikipedia
|
| 27000 |
tcp |
flex-lm |
FlexLM (1-10) |
SANS
|
| 1200,27000-27015 |
udp |
applications |
Counter Strike |
Portforward
|
| 1200,27000-27015 |
udp |
applications |
Day of Defeat Source |
Portforward
|
| 1200,27000-27015 |
udp |
applications |
Half Life 2 Steam |
Portforward
|
| 1200,27000-27015 |
udp |
applications |
Half Life Steam |
Portforward
|
| 8880-8890, 9961, 17475, 27000-30000 |
udp |
applications |
Test Drive Unlimited |
Portforward
|
| 6667, 9961, 17475, 27000-30000 |
tcp |
applications |
Test Drive Unlimited |
Portforward
|
| 27000 |
tcp |
flexlm0 |
FlexLM license manager additional ports |
Nmap
|
| 27000 |
tcp,udp |
quakeworld |
QuakeWorld Master Server |
Neophasis
|
| 27000 |
tcp,udp |
threat |
May be used as part of a Quake related game. |
Bekkoame
|
| 27000 |
tcp,udp |
flex-lm |
FLEX LM (1-10) |
Bekkoame
|
| 27000-27009 |
tcp,udp |
flex-lm |
FLEX LM (1-10), modified: 2018-02-15 |
IANA
|
| 27000-27050 |
tcp,udp |
games |
Ports 27000 to 27050 are typically used by some online games.
Steam (Valve gaming platform) uses these ports:
27000-27015 udp (Steam client game client traffic)
27015-27030 tcp/udp (typically matchmaking and HLTV, also used to download Steam content)
27031 udp, 27036 tcp/udp, and 27037 tcp (incoming for in-home streaming)
3478 udp, 4379 udp, 4380 udp (outbound - Steamworks P2P networking and voice chat)
4380 udp (Steam client) |
SG
|
| 27000-27006 |
udp |
|
id Software's QuakeWorld master server (unofficial) |
Wikipedia
|
| 27000-27009 |
tcp,udp |
flex-lm |
FLEX LM (1-10), modified: 2018-02-15 |
IANA
|
|
18 records found
Related ports: 7279 27001 27002 27003 27004 27005 27006 27007 27008 27009 36567 47611
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