Cannot access Mongo Atlas from Ubuntu server

[Tung_Ph_m (Tùng Phạm)]

1. I just set it to 0.0.0.0 to try to connect, so I’m sure the IP will be whitelisted
2. How can i check? Because I don’t manage this server
3. I just use Docker nodejs then connect by mongoose. and I receive this errors:
   MongoNetworkError: failed to connect to server [realtech-shard-00-01.hdqwa.mongodb.net:27017] on first connect [MongoNetworkTimeoutError: connection timed out
   at connectionFailureError (/usr/src/app/node_modules/mongodb/lib/core/connection/connect.js:362:14)
   at TLSSocket. (/usr/src/app/node_modules/mongodb/lib/core/connection/connect.js:330:16)
   at Object.onceWrapper (node:events:627:28)
   at TLSSocket.emit (node:events:513:28)
   at TLSSocket.emit (node:domain:489:12)
   at TLSSocket.Socket._onTimeout (node:net:550:8)
   at listOnTimeout (node:internal/timers:559:17)
   at processTimers (node:internal/timers:502:7)]
   at Pool. (/usr/src/app/node_modules/mongodb/lib/core/topologies/server.js:441:11)
   at Pool.emit (node:events:513:28)
   at Pool.emit (node:domain:489:12)
   at /usr/src/app/node_modules/mongodb/lib/core/connection/pool.js:564:14
   at /usr/src/app/node_modules/mongodb/lib/core/connection/pool.js:1014:9
   at /usr/src/app/node_modules/mongodb/lib/core/connection/connect.js:32:7
   at callback (/usr/src/app/node_modules/mongodb/lib/core/connection/connect.js:300:5)
   at TLSSocket. (/usr/src/app/node_modules/mongodb/lib/core/connection/connect.js:330:7)
   at Object.onceWrapper (node:events:627:28)
   at TLSSocket.emit (node:events:513:28)
   at TLSSocket.emit (node:domain:489:12)
   at TLSSocket.Socket._onTimeout (node:net:550:8)
   at listOnTimeout (node:internal/timers:559:17)
   at processTimers (node:internal/timers:502:7)
   Here my ufw on ubuntu