Getting rid of sendmail

[Emmanuel Gravel]

I'm looking for a way to entirely remove an MTA from a box and forward
everything to another host. I've found the /etc/mail/aliases file and
saw that I could configure it so that root would point to something
else, so that's half the battle, possibly. Once that's done, however, is
it simply a matter of setting sendmail_enable=NONE in /etc/rc.conf to
disable sendmail, or is there more I could/should do, to still keep
having the cron job outputs sent to the place I'd specify in
/etc/mail/aliases?

I mostly don't want the daemon running, but still want access to my
email.

Thanks!

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What exactly is ipfilter?

[Emmanuel Gravel]

I'm looking through rc.conf and the kernel config file for FreeBSD 4.9
(recently downloaded it, my last upgrade was 4.5 so I was way behind,
and this is a new install because my old firewall died). I'm used to
using ipfw and natd for my firewall, but now I'm seeing ipfilter, ipnat
and ipmon. I've done a google search on all of www.freebsd.org for
ipfilter, but it only seems to show up in release notes, and the online
handbook doesn't really talk about it. Since I haven't recompiled my new
kernel, should I consider this instead of ipfw and natd? What's the
difference, exactly?

On a related note, I'm not sure what the usefulness of IPDIVERT is
either, so I don't know if I should compile it in the kernel or not.

Thanks!

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Setting up FreeBSD as a wireless base station

[Emmanuel Gravel]

I was looking into setting up a wireless network at home. I'm already using
FreeBSD 4.4 as my gateway/firewall (NATD/ipfw/junkbuster) for my wired network.
I was initially looking at a Cisco 350 as an access point and Orinoco cards for
the laptops/desktops that don't have wired access, mostly because an admin I
knew swears by their security features. Cost is too high for my budjet however
(for the access point).

After some searching, I've found that FreeBSD could be used directly with a
wireless card to become an access point. However, with the Orinoco cards, I
read it could only do ad-hoc and not infrastructure mode. For that, a
Prism-based card is required. I've looked at the list of cards pretty quickly,
but I don't know which ones to get. Keep in mind that all the systems that will
be wireless will be Windows (98/XP), apart from the FreeBSD gateway.

Here's what I would like to accomplish:
1- The access point will not advertise it's name
2- When connecting to the access point, the clients will encrypt the name
they're trying to connect to, so outside snoopers, even if they do break WEP,
won't be able to connect (I think this is what was done with the Orinoco cards,
the Cisco 350, and special client software).
3- All communication afterwards is continuously encrypted between the clients
and the access point (not just with WEP). Both clients and server should have
key pairs (SSL?).
4- All clients will have access to the network and internet as if they were
wired (i.e. there should be no difference to the user whether using a wireless
or wired computer). This includes Windows shares as well as any other TCP/IP
based protocol.

Which Prism-based card would be best for this? Keep in mind I need both PCI and
PCMCIA cards that should all be compatible with each other. I have both PCI and
ISA slots available on my FreeBSD system.

Also, which Windows software will I be needing to make this painless to the
user (if anything specialized is needed)? Also, on the Windows side again,
which diagnostics software would be best?

Thanks for your help!


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