RE: UNIX to NT

Noller2Gkochind.com
Fri, 11 Sep 1998 07:47:09 -0500

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Could it be that you need a crossover cable?

Greg
<<<+)))

On Thursday, September 10, 1998 2:41 PM, Ryan Russell
[SMTP:ryanrsybase.com] wrote:
> Well, since you seem to know what you're doing,
> and it still doesnt work, I'm going to ask obvious questions
> and ask you to repeat tests...I'm not trying to sound degrading..
> just clarify. Unfortunatly, in text, it looks about the same :)
>
>
>
> >I'm attempting to hook up my test firewall (on a BSD UNIX box) to an NT
> >box. Both computers can send and receive valid pings - but only as a
> >loopback.
>
> Meaning that they can both ping 127.0.0.1? Which only tells you that your
> IP stack is at least partially functional.
>
> >If I ping the UNIX machine from the NT machine, it sees the ping
> >but does not respond.
>
> How do you know it "sees" the ping? Was this verified by packet
> capture, or by watching netstat counters go up, or what? How do you know
> it doesn't respond?
>
> >arp
> >broadcasts are ok.
>
> Meaning you see them on the wire, or when you do an arp -a you
> see the proper MAC addresses cached?
>
> >A UNIX administrator, an NT administrator, and a
> >network engineer cannot find any configuration errors.
>
> I usually keep doubling the number of enginners until the problem is fixed
> :)
>
> >In short - there's
> >a continuous wire, 2 correctly configured (I think) boxes, packets
moving,
> >and no communication. Any ideas how the two can be made to talk?
>
> Counseling?
>
> Seriously... sounds like perhaps there's some packet filtering going on?
> Use the built-in tools (netstat, arp) and check counters to make sure the
> IP
> stacks are in fact getting the packets. Check your route tables (netstat
> -r) to make sure one
> of the boxes doesn't think the other is in some other direction. Check
> subnet masks
> to make sure they both believe themselves to be on the same subnet.
>
>
> Ryan
>
>
>

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