0-Day Apache Attack Update to 2.4.51
| |

0-Day Apache Attack Update to 2.4.51

Byhostgeek

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) said it’s “seeing ongoing scanning of vulnerable systems, which is expected to accelerate, likely leading to exploitation,” urging “organizations to patch their servers immediately if they haven’t already.” CVE-2021-42013 is a new vulnerability being identified and building upon CVE-2021-41773, a flaw that impacts Apache web servers running version 2.4.49 and…

Subnet Cheat Sheet

Subnet Cheat Sheet

Byhostgeek

Addresses Host Netmask Amount of Class C /30 4 2 255.255.255.252 1/64 /29 8 6 255.255.255.248 1/32 /28 16 14 255.255.255.240 1/16 /27 32 30 255.255.255.224 1/8 /26 64 62 255.255.255.192 1/4 /25 128 126 255.255.255.128 1/2 /24 256 254 255.255.255.0 1 /23 512 510 255.255.254.0 2 /22 1024 1022 255.255.252.0 4 /21 2048 2046…