In large organizations you get a Linux system and from that moment you are responsible for all the software (middleware like LAMP) and configuration of the ‘Linux box’. That asks some more knowledge of Linux and also of networking, firewalls and (Redhat) security. The last part can be difficult when SeLinux is enabled in your environment. I had difficulties with both networking and security and that took me weeks to find out and get it working in the end.
I don’t know what’s the size of your organization and IT department, maybe something to keep in mind when they (IT) ask you to ride the horse. Try to coorperate with the ‘people on the floor’, they can help you when you’re in trouble. Just my 2 cents