Search TCP / UDP Port Assignment Database
Search result for: 25
From: [IANA] [NMAP] [WG] [WP] [SANS]
| Service | Port | Prot. | Description | Notes |
| smtp | 25 | tcp | Simple Mail Transfer | [IANA] |
| smtp | 25 | udp | Simple Mail Transfer | [IANA] |
| smtp | 25 | tcp | # Simple Mail Transfer | [NMAP] |
| smtp | 25 | udp | # Simple Mail Transfer | [NMAP] |
| 25 | tcp | AppController - SMTP | [WG] Mail server connection | |
| 25 | tcp | Orchestrator: from: VCO Server - to: SMTP Server | [WG] Email notifications | |
| smtp | 25 | tcp/udp | Simple Mail Transfer Protocol (SMTP) | [WG] |
| 25 | tcp | SMTP - Exchange Server | [WG] | |
| 25 | udp | SMTP - Exchange Server | [WG] | |
| 25 | tcp | SMTP - Simple Mail Transfer Protocol | [WG] | |
| 25 | udp | SMTP - Simple Mail Transfer Protocol | [WG] | |
| 25 | tcp | vCenter 2.5.x: from: vCenter Server - to: SMTP Server | [WG] Email notifications | |
| 25 | tcp | vCenter 4.x: from: vCenter Server - to: SMTP Server | [WG] Email notifications | |
| 25 | tcp | vCenter 5.x: from: vCenter Server - to: SMTP Server | [WG] Email notifications | |
| 25 | tcp | vCenter Log Insight 1.x: from: Log Insight - to: SMTP Server | [WG] Email notifications from vCenter Log Insight to a configured mail server | |
| 25 | tcp | VMware vCenter Chargeback 1.5: from: VMWare vCenter Chargeback Server - to: Client | [WG] SMTP | |
| 25 | tcp/udp | Simple Mail Transfer Protocol (SMTP), used for e-mail routing between mail servers | [WP] Official | |
| smtp | 25 | tcp | Simple Mail Transfer | [SANS] |
| smtp | 25 | udp | Simple Mail Transfer | [SANS] |
How to use:
To search by port enter a number in the range between 0 and 65535. To search service / protocol description by keyword enter a text string at least three characters long. Wild-card (*) is supported if it is the last character in the search string. Alternatively, select a port from one of the ranges listed below.
Port range: 0-1023
0-1023 - Well-known or System Ports
1024-49151 - Registered or User Ports
49152-65535 - Dynamic/Private or Ephemeral Ports
Information Sources:
[IANA]
IANA Service Name and Transport Protocol Port Number Registry
[NMAP]
NMAP.org well known service port numbers
[WG] WintelGuy.com port number database compiled from many different sources, including
Microsoft, VMWare, Citrix, Oracle, etc.
[WP] Wikipedia - List of TCP and UDP port numbers
[SANS] SANS Inst. / DShield service list