No-IP service returning invalid response for invalid credentials and valid credentials

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Hi
I calling No-IP service from my code using curl command like below

/usr/bin/curl --interface erouter0 --url 'http://username:password@dynupdate.no-ip.com/nic/update?hostname=something.ddns.net&myip=MyIP'

Observations:

1. For the first time if I try with invalid credentials im getting response as "badauth"
2. If try same invalid credentials again getting response as "nochg 84.116.12.5"
3. Also if I try with correct credentials immediately after wrong credentials getting response as "nochg 84.116.12.5" (in success case response should be "nochg MyIP")

I observed if i wait for 13mins after invalid credentials entered step 2 and step 3 giving valid responses. So why NO-IP service is not giving valid response after the wrong credentials entered?

What I have tried:

1. For the first time if I try with invalid credentials im getting response as "badauth"
2. If try same invalid credentials again getting response as "nochg 84.116.12.5"
3. Also if I try with correct credentials immediately after wrong credentials getting response as "nochg 84.116.12.5" (in success case response should be "nochg MyIP")

Posted 14-Mar-22 22:40pm

Member 13740197

Updated 10-Jul-22 4:53am

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Comments

Richard Deeming 15-Mar-22 4:43am

They're probably adding the source IP to a temporary blocklist to prevent brute-force hacking of your password. But you'd need to ask them directly - it's unlikely that anyone here will have access to a third-party service's internal source code to be able to answer your question.

Member 13740197 6-May-22 1:52am

Ok thank you

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Member 15702307 · Answer 1 · 2022-07-10T04:53:00

Solution 1

AFAIK username:password should be base64 encoded

Posted 10-Jul-22 4:53am

Member 15702307