Date: Fri, 21 Jul 2000 15:23:32 -0500 From: Drew Sanford <drew@planetwe.com> To: Danny McQuade <dmcquade@techie.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: DSL + NAT Probs Message-ID: <3978B144.B2BF1E7A@planetwe.com> References: <385235565.964209608969.JavaMail.root@web443-mc.mail.com>
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Danny, I recently set up BellSouth's DSL service on my BSD box using PPPoE, and attempted to use natd to get the rest of the network (several linux boxes, a couple of NT and one 98 machine) on the net as well. This failed miserably. However, using PPP with the -nat option appeared to work for some things, but not others. The problem, as it was pointed out to me, is that you need to set the MTU on ALL the network cards in ALL your other machines to something less than 1500 (I used 1462, and its working very well). For *nix/BSD machines this is easy enough to do by adding -mtu xxxx to the ifconfig line for whatever NIC you are setting. For windows, you will need to do bit of registery hacking. Danny McQuade wrote: > > Hi. I recently got Bell Atlantic Infospeed DSL service installed in my home > and I got PPPoE working great under FreeBSD 4.0. From the FreeBSD machine > it's self, PPPoE is flawless and I can take full advantage of the DSL line. > Before this I was using NAT with a dial-up connection, and that worked great > for connecting the other machines on my home LAN to the internet. Now, > however, I am finding some real problems with connecting to the internet > from a machine other than the FreeBSD box directly connected to the DSL > modem. It seems that I can connect to a number of random hosts/network > services. For example, the only websites I was able to connect to from my > internal FreeBSD box were www.rootshell.com & www.earthlink.net. The other > sites I tried would either be uncontactable, or netscape would just sit > there displaying 'Transfering data' in the status bar. > I seem to be able to connect to any machine's SMTP server without trouble. > This problem is really driving me nuts, because I first I thought there was > a bandwidth problem on the NAT server, but while exploring the rootshell > site I was able to download and view very large text files at DSL speeds. As > I said, I am running FreeBSD 4.0-RELEASE on the NAT server, using PPPoE to > connect via the DSL modem. I have set 'gateway_enable' to YES in rc.conf, > and I have enabled an 'open' firewall as well. Any suggestions regarding > this matter would be highly appreciated. Thank you in advance. > > Danny McQuade > dmcquade@techie.com > > ______________________________________________ > FREE Personalized Email at Mail.com > Sign up at http://www.mail.com/?sr=signup > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Drew Sanford Systems Administrator Planetwe.com Email: drew@planetwe.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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