Hi!

Riaan Oberholzer wrote:
> This is not a Tomcat issue, but I've tried desperately
> and could find no answer elsewhere... can someone
> please tell me how to get Tomcat working with
> ZoneAlarm (free version) as firewall?

In general, it is very advisable to know what a firewall does and how
it works before installing one. In general, ZoneAlarm is a (rather
simple) packet filter, i.e. a piece of software that examines network
packets as they arrive at or depart from the machine and decides on a
set of rules to allow or deny them. If you want a so protected machine
to run tomcat and access it from beyond the firewall, you need to add
a rule that allows requests from external sources directed at port 80
(or whatever you set your tomcat to listen on) on the local machine
and also to allow the responses from tomcat to any external host.
If you want to use SSL, you will have to allow those
request/response-pairs as well.
You should, however concider wether you really need a firewall, if
your machine is a pure server that does not serve other purposes. In
that case, you should just close all ports you don't need. A closed
port is no risk and if the listening software has flaws, a firewall
wouldn't protect you either.

HTH

 Phil


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