Hello, Still tinkering with my ongoing slow scan issues. Basically I'm on a Kali 2 box with OpenVAS 8, NMAP 7.31. When I'm port scanning firewalls the scans take forever, 2 hours or more.
I've had some recommendations to change firewall rules to REJECT instead of DROP. I've done this and it has helped the speed of NMAP scans, but no difference for OpenVAS (Full and Fast) scans. The only thing that speeds up the OpenVAS scans is if I alter the firewall to ACCEPT packets from the scanner. But that is not ideal, and I do not always have control over the upstream firewalls. So along with NMAP performing full scans within 15 minutes, a Nessus installation on the same Kali box also completes a full scan within 15-20 minutes. It just seems to be OpenVAS taking an exceptionally long time. Any other ideas would be appreciated... One other thing worthy of mention: These boxes VM's are in a VMWare Workstation test environment using NAT. So there should be no network latency. Thanks , Ted.
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