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Port 18505Audition Dance Battle Status Check

Port 18505 is primarily used by Nexon's Audition Online Dance Battle game client for status inquiries and version verification with the game server. It facilitates the initial connection phase to ensure players have compatible client versions and to retrieve server availability and updates prior to gameplay. The port supports both TCP and UDP protocols, allowing flexible communication during these checks..

inNetwork ServicesGaming
transport
tcp · udp

2 transports registered

in transit
cleartext

payload readable on path

assignment
unofficial

used by convention

risk
4/10

caution

lookups
18,909

rank 139 of 993 · top 14%

Technical Details

what runs on :18505

Port 18505 is designated unofficially for online gaming services, specifically as part of Nexon's Audition Online Dance Battle infrastructure. When a client connects, it uses this port to communicate with the server for pre-game status, version compatibility checks, and potentially to retrieve updates or news before entering the game lobby. By ensuring players’ clients are compatible with the server version, the game can maintain a synchronized experience.

The use of both TCP and UDP provides a balance between reliability and speed—TCP ensures accurate data transmission for critical information like version numbers, while UDP can efficiently handle less critical status updates or broadcast messages that tolerate some packet loss. This dual protocol support helps optimize connectivity and responsiveness.

The server likely listens on this port continuously for client queries, processing version authentication requests, and responding with success or prompts to update the client. Integration with content delivery networks or patch servers may occur after the initial handshake, but the primary role here is session initiation and compatibility checks before secure game authentication.

Security Information

exposure of :18505

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

network services averages 3.9 across 604 ports — this one sits 0.1 above.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

unofficial

used by convention, not registered — what answers here varies by deployment

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Common Vulnerabilities:

  • Spoofed status queries: Attackers may simulate legitimate clients to collect server status information or perform denial-of-service attempts.
  • Version probing: Exposing version details can aid attackers in targeting known vulnerabilities relevant to that server software.
  • Flooding attacks: Since it accepts both UDP and TCP, it can be susceptible to volumetric DoS or resource exhaustion via malformed or mass requests.

Common Mitigations:

  • Rate limiting: Implement connection rate controls to prevent abuse and flooding on this port.
  • Authentication: Require minimal validation before processing queries to avoid spoofed requests.
  • Traffic filtering: Use network firewalls to permit only expected source IP ranges or employ deep packet inspection.
  • Version hiding: Limit the detail exposed in responses to reduce information leakage to potential attackers.
  • Monitoring: Enable robust logging and anomaly detection around activities on this port.

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risk mix of the 8 listed

  • caution100%

0 of 8 encrypted