Port 2593RunUO Ultima Online
**RunUO** is an emulator server software for the popular MMORPG *Ultima Online*. It allows users to host private shards (servers) emulating the original game's experience, customized worlds, or entirely novel gameplay tailored to communities..
- transport
- tcp · udp
- in transit
- cleartext
- assignment
- unofficial
- risk
- 4/10
- lookups
- 9,181
2 transports registered
payload readable on path
used by convention
caution
rank 529 of 993 · top 53%
Technical Details
what runs on :2593Port 2593 is primarily used for client-server communication in custom or emulated Ultima Online environments running the RunUO server. Clients connect over TCP/UDP to authenticate, manage sessions, and exchange gameplay data in real-time. The server emulates the official EA/OSI Ultima Online protocol, facilitating seamless compatibility with game clients while supporting extensive server-side customization.
RunUO is developed with extensibility in mind, primarily utilizing C#/.NET for scripting game logic. This enables shard administrators to create rich custom content, automate administrative tasks, integrate with web services, and control network interactions. The port's openness to both TCP and UDP allows flexibility and performance tuning for low latency and reliability in player actions and world state updates.
Given its unofficial nature, this service usually runs on private networks or community-hosted servers. It's not standardized by IANA but is widely adopted in the Ultima Online emulation community. The protocol running over this port resembles the original Ultima Online protocol but may vary between server versions and custom builds.
Security Information
exposure of :2593risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
gaming averages 4.0 across 124 ports — this one sits level with it.
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 include:
- Unencrypted communication, making eavesdropping or packet injection possible.
- Weak authentication mechanisms prone to brute-force attacks.
- Buffer overflow vulnerabilities in outdated RunUO server versions.
- Denial of Service (DoS) potential by overwhelming the server with malformed packets.
- Unauthorized access via misconfigured admin interfaces.
Common mitigations:
- Place the server behind a firewall, restricting port 2593 to trusted IP ranges.
- Use VPN tunnels for client connections to encrypt traffic.
- Regularly update server software to patch known vulnerabilities.
- Implement strong passwords and consider multi-factor authentication if supported.
- Monitor traffic for anomalies and enable rate-limiting or connection throttling.
- Avoid exposing the server on the wider internet; prefer whitelisted access.
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risk mix of the 8 listed
- caution100%
0 of 8 encrypted