On Feb 2, 2008 2:49 PM, Stefan Kell <[EMAIL PROTECTED]> wrote:
> Hello,
>
> On Fri, 1 Feb 2008, Jim M wrote:
>
> > Sorry I wasn't clear. What my mind was thinking wasn't coming across.
> I
> > hope this helps.
> >
> > I have a firewall that runs on a Sun Ultra 5. It is a dhcp client on
> the
> > WAN side and a dhcp server inside the house. The firewall connects to a
> > switch that has several things connected to it including other computers
> > (running various operating systems), switches that service other parts
> of
> > the house and a Linksys wireless G access point.
> >
> > I have a company HP laptop that runs Windows XP. The laptop has a built
> > in 802.11 capability and a PCMCIA card. The card works fine, but the
> > built in will get through the WAP fine, but won't get an IP address from
> > the firewall.
> >
> > Is there some log file where I can look for error messages to try to
> > troubleshoot this.
> >
> > Thanks again, and I hope this helps explain things.
> >
> > -------- Original Message --------
> > Subject: Re: dhcp error message
> > From: Joachim Schipper <[EMAIL PROTECTED]>
> > Date: Fri, February 01, 2008 8:46 am
> > To: Jim M <[EMAIL PROTECTED]>
> >
> > On Thu, Jan 31, 2008 at 07:38:26PM -0700, Jim M wrote:
> > > my /var/log/messages file is filled over and over with the line
> > > (obviously the date/time varies)
> > >
> > > Jan 31 20:17:00 balrog dhclient: send_fallback: No route to host
> > >
> > > The machine is a firewall and has no graphic capabilities. It is a
> > dhcp
> > > client to get my the IP address for the home network and a dhcp
> > server
> > > for all the machines in the house. What does this error message
> > mean?
> > > The firewall works fine as the default router for all the wired
> > Ethernet
> > > machines in the house. But, I have laptop with built in 802.11 and
> > a
> > > PCMCIA card as well. When I use the PCMCIA card, everything works
> > fine.
> > > With the built in 802.11, however, it connects to the WAP, but does
> > not
> > > get an IP address from the firewall. I can't figure out why the
> > > difference and would appreciate any advice on how to troubleshoot
> > this.
> >
> > I'm not certain this is useful, but that *is* the message you get if
> > pf
> > blocks a packet. However, dhclient does some unusual stuff to be able
> > to
> > send packets even when the interface is down, and usually bypasses pf
> > because of that.
> >
> > Otherwise, it's not really clear to me which host is which and which
> > host is doing what, so I'm afraid I can't really help you. A little
> > clarification sent to the list might be useful here.
> >
> > Joachim
> >
>
> that is a classic: dhcp uses UDP broadcasts which usually are not
> forwarded, your AP is not your dhcp-server and so the dhcp request will
> reach the AP but not your firewall.
>
> Three solutions: dhcp relay agent on your AP (if possible) or configure
> your AP to forward broadcasts or use a dhcp server on your AP with a
> different IP range.
>
> Try any search machine with "dhcp relay" and you will find answers.
>
> Regards
>
> Stefan Kell
>
> What I don't get is why does the PCMCIA wireless work ok and not the
onboard? I assume the PCMCIA also gets it's IP from the AP.
