Jump to content

Connection refused to some domains


shuffly2

Recommended Posts

Hi team,

 

starting from today I am not able to reach some domains from my PHP and JAVA code from my domain in Heliohost.

 

In particular, I am not able to reach https://api.fanburst.com and http://api.soundcloud.com/ (which I call to extract some data) from my code. I always get a "Connection refused" error.

 

Did you change something from your side? 

 

User: shuffly

Domain: shuffly-backend.heliohost.org

 

Thanks for the support

Link to comment
Share on other sites

Nothing intentionally changed on our end that I'm aware of, but Tommy is experiencing an ongoing DOS attack at the moment. It's quite possible their IPs are currently blocked in our firewall due to excessive traffic from them.

 

I'll check when I'm at a PC...Mobile is difficult to do it with.

Link to comment
Share on other sites

Our firewall does a pretty good job at suppressing smaller DoS attacks, but a side effect is that software that opens tons of connections to a single IP can end up blocked as a false positive.

 

Since nothing has changed on our end or his end, odds are that it's either: our firewall blocked the connections to APIs he was using, or the service he was using has blocked our server for abuse. (Both have been known to happen in the past).

Link to comment
Share on other sites

Apparently api.soundcloud.com can resolve to four different A records.

 

52.84.234.178 was blocked for having 79 simultaneous connections open.

52.84.234.194 was blocked for having 78 simultaneous connections open.

52.84.234.33 was blocked for having 115 simultaneous connections open.

52.84.234.100 was blocked for having 88 simultaneous connections open.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...