In this two-part post on AD Recon, we will review various tools that can be used to enumerate the NetBIOS (UDP port 137/138 | TCP port 139) and SMB (TCP port 445) services. To begin, we will learn about the NetBIOS and SMB services, how they tie together, as well as how they are useful for domain […] The post AD Recon – NetBIOS (137/138/139) and SMB (445) Part-1 first appeared on Juggernaut Pentesting Blog.