hacktricks/network-services-pentesting/7-tcp-udp-pentesting-echo.md

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***


# Basiese Inligting

'n Echo-diens hardloop op hierdie gasheer. Die echo-diens was bedoel vir toets- en meetdoeleindes en kan op beide TCP- en UDP-protokolle luister. Die bediener stuur enige data wat hy ontvang terug, sonder enige wysiging.\
**Dit is moontlik om 'n diensverleningsaanval te veroorsaak deur die 'n echo-diens aan die echo-diens op dieselfde of 'n ander masjien te koppel**. As gevolg van die oormatig hoë aantal pakkette wat geproduseer word, kan die geaffekteerde masjiene effektief buite werking gestel word.\
Inligting van [https://www.acunetix.com/vulnerabilities/web/echo-service-running/](https://www.acunetix.com/vulnerabilities/web/echo-service-running/)

**Verstekpoort:** 7/tcp/udp
```
PORT   STATE SERVICE
7/udp  open  echo
7/tcp  open  echo
```
## Kontak Echo-diens (UDP)
```bash
nc -uvn <IP> 7
Hello echo    #This is wat you send
Hello echo    #This is the response
```
## Shodan

* `poort:7 echo`

## Verwysings

[Wikipedia echo](http://en.wikipedia.org/wiki/ECHO\_protocol)

[CA-1996-01 UDP Poort Denial-of-Service Aanval](http://www.cert.org/advisories/CA-1996-01.html)


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* Kry die [**amptelike PEASS & HackTricks swag**](https://peass.creator-spring.com)
* Ontdek [**Die PEASS Familie**](https://opensea.io/collection/the-peass-family), ons versameling eksklusiewe [**NFTs**](https://opensea.io/collection/the-peass-family)
* **Sluit aan by die** 💬 [**Discord groep**](https://discord.gg/hRep4RUj7f) of die [**telegram groep**](https://t.me/peass) of **volg** ons op **Twitter** 🐦 [**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
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