monero-site/_i18n/de/resources/moneropedia/ssu.md
Leza89 8d79f880dc German translation for getmonero.org
main:
 - [x] translated: de.yml - Status: peer-reviewed
 - [x] translated: lang\de\ - Status: peer-reviewed
 - [x] added: "de: Deutsch in other ymls"

resources:
 * untranslated: moneropedia - some terms added to match de.yml
 * untranslated: user guides
 * untranslated:  developer guides

Special thanks to ErCiccione and rodolfo912 as well as to rbrunner7
2019-01-30 19:56:29 +01:00

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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)