Software firewalls work at which layer of the OSI model?

Harold wants to set up a firewall on his network but is not sure which one would be the most appropriate. He knows he needs to allow FTP traffic to one of the servers on his network, but he wants to only allow FTP-PUT. Which firewall would be most appropriate for Harold needs?

After an SQL Injection attack, an investigator is examining a log entry in an IIS log from a Windows-based server. The investigator notices a suspicious GET request: Id=ORD-
001%27%20or%201=1;--. What can the investigator infer from this decoded query in the investigation?

What is a SCSI (Small Computer System Interface)?

What should you do when approached by a reporter about a case that you are working on or have worked on?