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# Taarifa za Msingi

Huduma ya echo inafanya kazi kwenye mwenyeji huu. Huduma ya echo ilikusudiwa kwa ajili ya majaribio na vipimo na inaweza kusikiliza kwenye protokali za TCP na UDP. Server inarudisha data yoyote inayopokea, bila mabadiliko.\
**Inawezekana kusababisha kukatizwa kwa huduma kwa kuunganisha huduma ya echo na huduma ya echo kwenye mashine ile ile au nyingine**. Kwa sababu ya idadi kubwa sana ya pakiti zinazozalishwa, mashine zilizoathirika zinaweza kutolewa kwenye huduma kwa ufanisi.\
Taarifa kutoka [https://www.acunetix.com/vulnerabilities/web/echo-service-running/](https://www.acunetix.com/vulnerabilities/web/echo-service-running/)

**Bandari ya Kawaida:** 7/tcp/udp
```
PORT   STATE SERVICE
7/udp  open  echo
7/tcp  open  echo
```
## Wasiliana na huduma ya Echo (UDP)
```bash
nc -uvn <IP> 7
Hello echo    #This is wat you send
Hello echo    #This is the response
```
## Shodan

- `port:7 echo`

## References

[Wikipedia echo](http://en.wikipedia.org/wiki/ECHO_protocol)

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

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