CentOS 5 Networking :: Notes On Installing Mod_proxy_html In 5.5

This post is just intended as a "trail of crumbs" for anybody else who needs to install a "reverse proxy" in CentOS. First, a disclaimer. I really don't know what I am doing--I am trying to figure out "just enough" so I can do what I need to do. My primary OS is Mac OS, and linux is making me resurrect neurons that went to sleep 30 years ago. So I have a subscription to JSTOR, which is a service that uses fixed IPs to determine who you are. When you go to [URL], the services you have access to depend upon the IP that you are coming from. I have a VPS at Linode, with the IP of (say) 1.2.3.4. I registered 1.2.3.4 with jstor when I set up my subscription.

I want to set up a reverse proxy so that when I go to [URL] from home or the office, I get access to jstor. I use mod_proxy_html so that every time I ask my VPS for "1.2.3.4/myjstor/whatever" the VPS goes to jstor (from the IP 1.2.3.4), gets the page, rewrites the page as necessary, and then returns the modified page to my computer. In this way I can browse jstor 'as if' I were actually at the IP 1.2.3.4. So I got all this running last year (well, mostly) with CentOS 5.2. But the other day we got different internet service, with new IPs, and I had to update things. In a fit of madness, I typed

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