Port 8848 — Nacos
Quick reference for TCP/UDP port 8848, used by Nacos. Includes what the service does, security guidance and related ports.
What is port 8848?
Nacos service discovery & config web console.
What port does Nacos use?
Nacos listens on port 8848 by default.
Is port 8848 open? How to check
Run one of these from your computer, replacing HOST with the IP address or domain you want to test.
nc -zv HOST 8848
Test-NetConnection HOST -Port 8848
nmap -p 8848 HOST
A refused or timed-out connection means the port is closed or filtered by a firewall.
Security guidance
Medium risk — open with care
Port 8848 (Nacos) can safely face the internet if you keep the software up to date, restrict admin endpoints, and use TLS where possible. Audit who can reach it and watch your logs.
Frequently asked
What is port 8848 used for?+
Port 8848 is the standard TCP/UDP port for Nacos. Nacos service discovery & config web console.
What port does Nacos use?+
Nacos listens on port 8848 by default.
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