{"data":[{"number":27017,"slug":"27017-mongodb","name":"MongoDB","brief":"MongoDB primarily uses port 27017 for client connections to the database server. This port facilitates communication between applications and the database, handling requests for data insertion, querying, updating, and deletion. Due to its widespread deployment in web and cloud services, managing access and security on this port is crucial.","commonUsage":"NoSQL Database","protocols":[],"transport":{"tcp":false,"udp":false,"sctp":false},"official":false,"encrypted":false,"range":"registered","risk":{"score":4,"level":"caution"},"categories":[{"name":"Databases","slug":"databases"}],"aliases":[],"views":11424,"updatedAt":"2026-08-13T12:30:07.037Z","url":"https://whatportis.com/ports/27017-mongodb"},{"number":27018,"slug":"27018-mongodb-shard-server","name":"MongoDB Shard Server","brief":"MongoDB shard servers commonly listen on TCP port 27018 by default.","commonUsage":"MongoDB uses TCP port 27018 as the default for a `mongod` instance started with the `--shardsvr` option. Engineers commonly encounter it on the shard members of a MongoDB sharded cluster; deployments can configure a different port.","protocols":["tcp"],"transport":{"tcp":true,"udp":false,"sctp":false},"official":false,"encrypted":false,"range":"registered","risk":{"score":8,"level":"risk"},"categories":[{"name":"Databases","slug":"databases"}],"aliases":[],"views":0,"updatedAt":"2026-10-08T20:15:00.789Z","url":"https://whatportis.com/ports/27018-mongodb-shard-server"}],"meta":{"query":"mongo","total":2,"count":2,"limit":10,"hasMore":false}}