What security services does IPSec not provide, limitations$?$ a$.$ How can these security services be implemented in an organization? b$.$ An attacker will often port scan a host $($or range of host$)$ prior to attempting to compromise them. Briefly explain what port scanning involves and identify the information that it provides to a potential attacker. Mention different tools to acquire the information. c$.$ Explain IP traffic processing for outbound and inbound packets with proper flowchart model diagrams.