firewall configuration

[Julian Opificius]

On Jun 29, 2004, at 10:07 AM, Steve Ward wrote:

> OK found the redhat-config-securitylevel GUI but even if I use the root
> password, none of my configuration changes are saved. Primarily, I just
> want to open port 80 so I can serve my web pages. Any ideas what I can
> do?
> TIA
> Steve
>
>
> On Mon, 2004-06-28 at 22:27, Steve Ward wrote:
>> Folks,
>>
>> The other day during the boot process I noticed a message that said 
>> the
>> ntpd was opening firewall port 123 (ostensibly to sync with the
>> timeserver). I wasn't aware that ydl 3.0 shipped with a configured
>> firewall. What is it's name? How do I find it and configure it? Are 
>> they
>> any man pages on it?
>>
>> thx
>> Steve
>>
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>

IPChains ad IPTables are the two primary methods for firewalling in 
Linux, the latter being the more modern and flexible (read 
"preferred").

One way of handling firewal configuration is to load and run 
Firestarter. It will give you useful additional visibility into 
Internet traffic. I've been running it for several months - it's quite 
an eye-opener.

-- 
Julian Opificius