| Port No | 123 |
| Service Name | ntp |
| RFC Doc | 2030 |
| Protocol | TCP |
| Description | S/NTP (Simple/Network Time Protocol) is the primary protocol used on the Internet for keeping clocks synchronized. |
| Reference Link | Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI: RFC2030 |
| Attack |
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