Firewall Wizards mailing list archives
Re: UNIX to NT
From: Jim Granville <jgranville () lucent com>
Date: Fri, 11 Sep 1998 15:16:18 -0400
You need a cross over cable or a hub that will do this for you. You can make an RJ45 crossover cable as follows: RJ45 PIN RJ45 PIN 1 Rx+ 3 Tx+ 2 Rc- 6 Tx- 3 Tx+ 1 Rc+ 6 Tx- 2 Rc- Jim Noller2G () kochind com wrote:
Could it be that you need a crossover cable? Greg <<<+))) On Thursday, September 10, 1998 2:41 PM, Ryan Russell [SMTP:ryanr () sybase 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, packetsmoving,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
Current thread:
- UNIX to NT mreiter (Sep 10)
- Re: UNIX to NT R. DuFresne (Sep 10)
- Re: UNIX to NT Massimo Brogioni (Sep 10)
- Re: UNIX to NT Chris Cappuccio (Sep 10)
- Re: UNIX to NT David C Niemi (Sep 11)
- <Possible follow-ups>
- Re: UNIX to NT Ryan Russell (Sep 10)
- RE: UNIX to NT Noller2G (Sep 11)
- Re: UNIX to NT Jim Granville (Sep 11)