When performing offensive security testing, assessors sometimes run into issues where their source IP address gets blacklisted. For example, we might be performing a web application test and, due to the many suspicious queries being performed, our IP address is suddenly blocked. While on the surface this may seem like an effective security control, it’s actually quite easy to change a source IP address. Methods have existed for a long time, including using a proxy server or routing traffic through a VPN tunnel. The problem with these methods is that they take effort to set up and those new source IP addresses can just as easily be blocked, leaving assessors in the dark once again. When doing this kind of work every day, it would be nice to have an efficient method for changing a source IP address for this kind of testing without risking getting blacklisted.