Without rate limiting, the link can become saturated easily by one or two devices. To ensure smooth network performance, implement rate limiting to negate this from occurring. A good guide from Packet Pushers is available below. Use Rate-Limiting to Alleviate Link Saturation - Packet Pushers Podcast.
Phil Zimmerman (PGP), Ladar Levison (Lavabit), & Team release Secure Email Protocol DIME - DIME is to SMTP as SSH is to Telnet Dark Mail Technical Alliance. Full specs here: https://darkmail.info/downloads/dark-internet-mail-environment-december-2014.pdf (PDF) Full source code (libraries) here: https://github.com/lavabit/