What is UDP 25 used for?
Well-known ports
| Port | TCP | Description |
|---|---|---|
| 21 | Yes | File Transfer Protocol (FTP) control (command) |
| 22 | Yes | Secure Shell (SSH), secure logins, file transfers (scp, sftp) and port forwarding |
| 23 | Yes | Telnet protocol—unencrypted text communications |
| 25 | Yes | Simple Mail Transfer Protocol (SMTP), used for email routing between mail servers |
Is 8089 a TCP or UDP?
Port 8089 Details
| Port(s) | Protocol | Service |
|---|---|---|
| 8089 | tcp | web email rules |
| 8088-8089 | tcp | applications |
| 8089 | tcp,udp |
Should I open Internet port 22?
As such, Port 22 is subject to countless, unauthorized login attempts by hackers who are attempting to access unsecured servers. A highly effective deterrent is to simply turn off Port 22 and run the service on a seemingly random port above 1024 (and up to 65535).
What port does Splunk use?
Splunk App for VMware sends information to the data collection nodes using port 8008 about the information they need to collect from a specific vCenter Server system. The DCN retrieves the data from vCenter Server and forwards the data to the Splunk indexer on port 9997.
What happens if I block port 25?
The standard port used for SMTP connections is 25. An ISP (Internet Service Provider) may block port 25 in order to prevent spamming by its customers. With port 25 being blocked, you won’t be able to host your own mail server at home or work.
How do I work around my ISP blocking port 25?
Solution for ISP blocks SMTP port 25
- Check send connector. Check the Exchange Server send connector.
- Create new send connector. Create a new send connector SpamBullOut.
- Disable old send connector. Disable the old send connector.
- Restart Microsoft Exchange Transport service. Restart the Microsoft Exchange Transport service.
What port 8082 used for?
These ports are used when installing clients via Remote Install and when clients send quarantined files to the server using the UNC path. This uses HTTP port 8082 and HTTPS port 4345.