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32 lines
1.1 KiB
Markdown
32 lines
1.1 KiB
Markdown
{{#include ../banners/hacktricks-training.md}}
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# Osnovne Informacije
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Echo servis radi na ovom hostu. Echo servis je namenjen za testiranje i merenje i može slušati na TCP i UDP protokolima. Server vraća sve podatke koje primi, bez modifikacije.\
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**Moguće je izazvati uskraćivanje usluge povezivanjem echo servisa sa echo servisom na istom ili drugom računaru**. Zbog prekomerno visokog broja paketa koji se proizvode, pogođeni računari mogu biti efikasno isključeni iz upotrebe.\
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Info from [https://www.acunetix.com/vulnerabilities/web/echo-service-running/](https://www.acunetix.com/vulnerabilities/web/echo-service-running/)
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**Podrazumevani Port:** 7/tcp/udp
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```
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PORT STATE SERVICE
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7/udp open echo
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7/tcp open echo
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```
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## Kontaktiranje Echo servisa (UDP)
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```bash
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nc -uvn <IP> 7
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Hello echo #This is wat you send
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Hello echo #This is the response
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```
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## Shodan
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- `port:7 echo`
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## References
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[Wikipedia echo](http://en.wikipedia.org/wiki/ECHO_protocol)
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[CA-1996-01 UDP Port Denial-of-Service Attack](http://www.cert.org/advisories/CA-1996-01.html)
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{{#include ../banners/hacktricks-training.md}}
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