Network Problem on FreeBSD-4.8 : Cannot ping LAN hosts

Thu Sep 18 18:35:08 PDT 2003

hi josh,

thanks for the advise. it's the "FIREWALL" thing that
don't allow my FreeBSD to access the Internet Sharing
in the Windows XP. Now, its ok already. I just
unchecked the option that "Restricts IP hosts from
Internet (external) to access the Internet Sharing
Machine" or something like that. Now its working. It
really is not a problem with my FreeBSD LAN card or
other configurations. It's the WindowsXP trick!

-edwin

--- Josh Paetzel <friar_josh at webwarrior.net> wrote:
> On Thu, Sep 18, 2003 at 10:04:15AM -0700, Edwin D.
> Vinas wrote:
> > hi josh,
> >  
> > see dmesg, ifconfig and netstat below... hope you
> can help me now. -edwin
> >  
> > IFCONFIG
> > 
> > dc0:
> flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
> mtu 1500
> > 
> > inet 192.168.0.6 netmask 0xffffff00 broadcast
> 192.168.0.255
> > 
> > inet6 fe80::280:adff:fe00:591a%dc0 prefixlen 64
> scopeid 0x1 
> > 
> > ether 00:80:ad:00:59:1a
> > 
> > media: Ethernet autoselect (100baseTX)
> > 
> > status: active
> 
> Nothing wrong here.
> 
> > 
> > DMESG
> > 
> > dc0: <Davicom DM9102A 10/100BaseTX> port
> 0xd000-0xd0ff mem 0xef000000-0xef0000ff irq 11 at
> device 9.0 on pci0
> > 
> > dc0: Ethernet address: 00:80:ad:00:59:1a
> > 
> > miibus0: <MII bus> on dc0
> > 
> > ukphy0: <Generic IEEE 802.3u media interface> on
> miibus0
> > 
> > ukphy0: 10baseT, 10baseT-FDX, 100baseTX,
> 100baseTX-FDX, auto
> 
> There's your NIC being detected.
> 
> 
> > 
> > ad0: UDMA ICRC error reading fsbn 0 (ad0 bn 0; cn
> 0 tn 0 sn 0) retrying
> > 
> > ad0: UDMA ICRC error reading fsbn 0 (ad0 bn 0; cn
> 0 tn 0 sn 0) retrying
> > 
> > ad0: UDMA ICRC error reading fsbn 0 (ad0 bn 0; cn
> 0 tn 0 sn 0) retrying
> > 
> > ad0: UDMA ICRC error reading fsbn 0 (ad0 bn 0; cn
> 0 tn 0 sn 0) falling back to PIO mode
> > 
> 
> This isn't so good, looks like your hard drive is
> sick, although I doubt that has 
> anything to do with your network troubles.
> 
> 
> > NETSTAT -rn
> > 
> > Routing tables
> > 
> > Internet:
> > 
> > Destination Gateway Flags Refs Use Netif Expire
> > 
> > default 192.168.0.1 UGSc 0 0 dc0
> > 
> > 127.0.0.1 127.0.0.1 UH 0 0 lo0
> > 
> > 192.168.0 link#1 UC 1 0 dc0
> > 
> > 192.168.0.1 link#1 UHLW 1 3 dc0
> > 
> 
> You've got the correct gateway here, and it appears
> to be up as well.
> 
> > > I can browse the web using all the WinXPs but I
> cannot access the web via FreeBSD.
> > > FreeBSD's IP address follows the 192.198.0.x
> format just like the other WinXPs.
> > > When I check the FreeBSD, i can see its IP
> address and Subnet Mask etc via "ifconfig".
> > > I can even change the IP address+ Gateway (which
> is WinXP2's IP add) using
> > > ifconfig or /stand/sysinstall. I even manually
> edited rc.conf, and even changed the 
> > > setting to DHCP etc etc etc.
> > > 
> > > My diagnosis tells that I cannot ping any WinXP
> machine in the LAN. But I can ping myself (FreeBSD)
> locally. When I run "netstat -rn", It seems the
> network card is ok. 
> > > When I run "tcpdump", I didn't show any output.
> By the way, this network card is CNet PRO200. I was
> thinking it was not recognize or supported by the
> FreeBSD-4.8. When I checked "FreeBSD-4.8's Hardware
> Compatibility Lit", I didn't see any "CNet PRO200"
> but I saw a "CNet/PRO" which I suppose are just the
> same. So, I recompiled my Kernel again just in case
> FreeBSD didn't recognize this newly installed Cnet
> LAN card. But, nothing changed after Kernel
> recompilation. (But I did not change any option in
> the Generic kernel; just re-compiled it).
> > > 
> > > The output when I ping WinXP3: "ping: sendto:
> Host is down". 
> > > It's not true coz Im typing this email right in
> the WinXP3 machine. I cannot also ping FreeBSD's IP
> add from the WinXP internet sharing server. The
> dmesg shows the following: pci0 (vendor=0x1106
> dev=0x3059) at 17.5 irq 5.
> > > 
> > > By the way, this machine where FreeBSD is
> installed also has WinXP which works fine when in
> Windows. So Im sure my LAN card is really ok. It's
> only a problem of FreeBSD.
> > > 
> > > 
> > > What should I do? I don't want to make FreeBSD
> machine as my Internet sharing server as of now
> (although its the best option). Im testing/running a
> Unix program that needs to be connected to the
> Internet via Windows XP gateway.
> > > 
> > > Please help me make my FreeBSD be part of my
> LAN....
> > > 
> > > -Edwin
> > > 
> > > 
> > 
> > The output of dmesg and ifconfig would be helpful
> in diagnosing this. I suppose 
> > that's major PITA though considering you're LAN
> isn't working. At the very least, 
> > the first entry that comes up with ifconfig would
> be very helpful.
> > 
> > Josh
> > 
> 
> Two things come to mind.  One is that you don't have
> correct nameservers in 
> /etc/resolv.conf.  The other is that your WinXP box
> has it's native firewall turned 
> on and is not playing nicely with FreeBSD.  Other
> than that, from what I can tell 
> everything looks ok on the FreeBSD side of things,
> but I agree it's odd that the same 
> box with WinXP on it can access the network and
> internet just fine.  One last thing I 
> can recommend is to try arp -a and see if you are
> connected below the TCP level.  You 
> should get an output similar to: (10.0.0.1) at
> 00:02:b3:c0:a9:c9 on xl0 [ethernet]  
> Sorry I can't be of more help but it looks like
> you've configured FreeBSD correctly.
> 
> Josh
> 

=====
best regards,

\___\__\_______/__/ Edwin D. Viñas http://edwin.ontheweb.com
 \___\__\_____/__/  Electronics and Communications Engineer
  \___\__\___/__/   Mobile: +639202612660
   \___\__\_/__/    E-mail: edwin_vinas at yahoo.com
PH  \___\_____/     "The Brain is as vast as the Universe."

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