2017-10-18 16:04:13
good
Using IP transparent with Blackhole
The Blackhole project supports the
!IP transparent
kernel functionality. It allows a process to bind to any IP it sees fit even if this IP is not one of the server.
When using load balancers, the original source of the HTTP request is lost. When you look at your HTTP logs, all requests
are coming from the load balancer, not the original client. So IP transparent was invented to solve this.

Blackhole supports that and can
!telegraph
the original source IP anywhere in the network, in any container.

In our project, Apache and Exim are running in a container with no Internet access. It is good to have useful
logs in there with the original client IP. So we used this Blackhole functionality.