William P O'Sullivan wrote:Anyway, it may be possible that even you don't think IHS is serving static content (css, gifs, etc.),
it may actually be caching the responses from WAS on first invocation.
This can be configured quite easily and really does improve performance.
Paul Clapham wrote:It's quite common for organizations with large internal networks (perhaps like yours) to protect them with a firewall. And so there's a strategy where you put the Websphere machines inside the firewall, to protect them from attacks over the web. When you do that, you also have to put a simple web server outside the firewall, whose job is mostly to pass requests on to the Websphere servers.
Aylwin Cal wrote:Sorry to be a pain. I didn't build the system but I'm kinda tasked with maintaining it. So I'm just trying to understand what's going on and why certain things have been implemented this way.
Aylwin Cal wrote:
Paul Clapham wrote:It's quite common for organizations with large internal networks (perhaps like yours) to protect them with a firewall. And so there's a strategy where you put the Websphere machines inside the firewall, to protect them from attacks over the web. When you do that, you also have to put a simple web server outside the firewall, whose job is mostly to pass requests on to the Websphere servers.
In this case, there's no firewall. IBM HTTP Server and WebSphere Application Server are installed on the same physical servers. HTTP/HTTPS (port 80/443) reaches the physical servers, IHS then redirects to WAS (port 9080/9443) either on the same physical server or any of the other physical servers running the IHS-WAS combo.
Sorry to be a pain. I didn't build the system but I'm kinda tasked with maintaining it. So I'm just trying to understand what's going on and why certain things have been implemented this way.
Mikalai Zaikin wrote:Aylwin, please refer this redbook for differend WAS 6.1 concepts and designs. Specifically, you might be interested in "Topology" chapter.
Aylwin Cal wrote:It seems that WAS can't exist without IHS and that brings me back to the question: why? Why is IHS an absolute must?
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