[ale] home networking difficulties

[Andrew Grimmke]

arp -a on the linux box

dsl-65-188-226-X.telocity.com (65.1188.226.X) at 00:10:E8:0A.....
[ether] on eth0
? (192.168.1.2) at 19:02:16:08..... [ether] on eth1

on windows box.  Strange, I get 
no ARP entries found

unless I ping 192.168.1.1

then I get (for a few minutes after)

Interface: 192.168.1.2 on 0x3

internet address     physical address    type
192.169.1.1          00-07-95....        dynamic

also,

I am pretty sure the cabling is right.  I have networked with each of
the cards (for dsl and at lan parties), as well.  When I ping from linux
to windows, if the windows software firewall is up, I get a popup about
"unauthorized ICMP attempt from 192.168.1.1"

On Wed, 2002-08-21 at 17:51, Joseph A. Knapka wrote:
> Andrew Grimmke wrote:
> > 
> > On Wed, 2002-08-21 at 15:52, Joseph A. Knapka wrote:
> > > Andrew Grimmke wrote:
> > >
> > > > Geoffrey wrote:
> > > > >
> > > > >You machine is not responding to the ping request.
> > > > >It's either a routing issue, or you've got a firewall
> > > > >running on your Redhat box blocking.  What are the ip
> > > > >addresses for the two boxes you're trying to ping
> > > > >to/from?  Look to see if you
> > > > >have /etc/sysconfig/ipchains file.
> > > >
> > > > I know it has taken a while, but I have been trying to
> > > > figure this out and doing some research on my own.
> > > >
> > > > the linux box router/firewall is 192.168.1.1
> > > > the windows box is 192.168.1.2
> > > >
> > > > IPchains is running, but I have set a rule to allow
> > > > traffic from the 192.168.1.X subnet.
> > > >
> > >
> > > Does it work if you totally disable ipchains? (Just
> > > flush all the rules - ipchains -F <chain>, for
> > > each chain, IIRC.)
> > 
> > Well,
> > 
> > I flushed the rules (ipchains -F).  Then I listed the rules to make sure
> > I did it right (ipchains -L).  All that was lest was the default
> > policies:
> > Chain input (policy ACCEPT):
> > Chain forward (policy ACCEPT):
> > Chain output (policy ACCEPT):
> > 
> > then I ping the other machine and nothing.
> > 
> > could it be routing?  the routing table looked pretty straightforward.
> > I didn't see anything that looked wrong.
> > 
> 
> What does "arp -a" show you on each machine? (It -should-
> work on the Windows box, and definitely will on the Linux
> box). The ARP cache should contain each IP address,
> along with the associated hardware (MAC) address. If
> they don't, then you may have some bad hardware. I've
> had several NICs (cheap Netgear cards) where the
> receiver failed - I'd still see packets from those
> cards on the network, but they'd never receive
> anything. The way I figured that out was by seeing
> an ARP reply go out on the net via snort, and then
> finding that the machine in question didn't have a
> corresponding entry in its ARP cache.
> 
> Cheers,
> 
> -- Joe
>   "I'd rather chew my leg off than maintain Java code, which
>    sucks, 'cause I have a lot of Java code to maintain and
>    the leg surgery is starting to get expensive." - Me
> 



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