mirror of
https://github.com/monero-project/monero-site.git
synced 2024-12-14 20:36:34 +02:00
26 lines
1.3 KiB
Markdown
26 lines
1.3 KiB
Markdown
---
|
|
tags: ["kovri"]
|
|
terms: ["SSU"]
|
|
summary: "Secure Semi-reliable UDP: one of two Kovri transports"
|
|
---
|
|
|
|
{% include untranslated.html %}
|
|
### The Basics
|
|
|
|
*Secure Semi-reliable UDP* is one of two encrypted @transports for @Kovri.
|
|
|
|
Similar to @NTCP, @SSU's *primary* purpose is to securely transmit @in-net @I2NP messages through @tunnels but, unlike @NTCP, @SSU functions solely over encrypted [UDP](https://en.wikipedia.org/wiki/User_Datagram_Protocol).
|
|
|
|
### In-depth information
|
|
|
|
- Like @NTCP, @SSU is a connection-oriented, point-to-point data transport
|
|
- Termed *semi-reliable* because @SSU will repeatedly retransmit *unacknowledged* messages (up to maximum number then dropped)
|
|
- @SSU also provides several unique services (in addition to its function as a @transport layer):
|
|
- IP detection (local inspection or with [peer testing](https://geti2p.net/en/docs/transport/ssu#peerTesting))
|
|
- [NAT](https://en.wikipedia.org/wiki/Network_address_translation) traversal (using [introducers](https://geti2p.net/en/docs/transport/ssu#introduction))
|
|
- [Firewall](https://en.wikipedia.org/wiki/Firewall_%28computing%29) status and, if implemented, @SSU can notify @NTCP if the external address or firewall status changes
|
|
|
|
### Notes
|
|
|
|
For further details, read @Java-I2P's [SSU](https://geti2p.net/en/docs/transport/ssu)
|