Computer 1: Running VMWare on Windows XP gets SSH and telnet connections to Linux target @ 192.168.0.2 using DLINK adapter with IP 192.168.0.3.

Computer 2: Running same version of VMWare on Windows 7 can't get SSH or telnet connection to the SAME Linux target (192.168.0.2) using the SAME DLINK adapter. ("ssh: connect to host 192.168.0.2 port 22: Connection refused") I think I attempted to initially make a connection with the DLINK adapter address of 192.168.0.4.
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mmes@ubuntu:~/.ssh[/email]$ ssh -vvv 192.168.0.2
OpenSSH_5.3p1 Debian-3ubuntu3, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to 192.168.0.2 [192.168.0.2] port 22.
debug1: connect to address 192.168.0.2 port 22: Connection refused
ssh: connect to host 192.168.0.2 port 22: Connection refused
==================
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN -
tcp 0 0 192.168.0.130:48340 10.30.173.2:445 ESTABLISHED -
tcp6 0 0 :::22 :::* LISTEN -
tcp6 0 0 ::1:631 :::* LISTEN -
==================
mmes@ubuntu:~/.ssh$ sudo iptables --list
Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination
====================
Both computer 1 and 2 are on the same network. I have (I think) opened port 22 on the Windows 7 machine. I initially tried connecting to the Linux target from computer 1 using IP 192.168.0.4.

Its either a Windows 7 problem or a key issue.

Thanks for any help you can provide.

This doesn't make sense... you're talking about connecting from an XP / Win7 machine yet there's ubuntu output? What's that all about? What virtualization is being done ?

No, I'm not trying to connect a XP machine to a Windows 7 machine. I'm trying to connect two different computers to a linux target device. I can connect the XP machine to the device, but the Windows 7 machine cannot. Both computers are running VMWare, which is where the Ubuntu output comes from.

Maybe it'll help if I draw a picture:
XP Running VMWare (192.168.0.3) <-> Linux target device (192.168.0.2) (This connection works)
Windows 7 Running VMWare (192.168.0.3) <-> Linux target device (192.168.0.2) (This connection does not)

I'm not trying to do this at the same time.

nope lost. Why do you keep mentioning VMWare and windows and not Ubuntu? if it's a windows issue, treat it as one. can you use putty from Win7 to reach that box or not? It'll certainly be nothing related to SSH Keys as that's not relevant until after you've got a tcp connection.

VMWare is a virtual machine that runs Ubuntu Linux within the Windows environment.

I have to do my development work in a Linux environment, hence VMWare. I don't *know* if it's a Windows issue or something else. I can't get a putty connection from Windows 7 OR within VMWare. THAT IS MY PROBLEM!

right so if you can't get it from Win7, anything past that is clearly irrelevant. so can you ping the box? do you get an arp entry for it? You say above that bot Win7 and XP are on 192.168.0.3? Typo? Dual boot?

I was using the XP machine first using a USB to Ethernet DLINK adapter to connect to the Linux target. Worked fine. I disconnect the same USB to Ethernet adapter from the XP machine and connect it to the Windows 7 machine and use the same address (192.168.0.3) to *try* to connect to the Linux target (192.168.0.2). I can ping the Linux target device from the Windows 7 computer.

Output from VMWare on Windows 7 machine:
mmes@ubuntu:~$ arp -v
Address HWtype HWaddress Flags Mask Iface
192.168.0.2 ether 00:50:56:f5:f6:29 C eth4
Entries: 1 Skipped: 0 Found: 1

Output from the Linux target:
/$ arp -v
? (192.168.0.3) at 00:80:c8:3c:9c:21 [ether] on usbDLink0

To make sure that you connect to the correct IP, lets check whether the actual attempt reaches the Linux host. There are several methods how to do this and its up to you which one fits for you. I would suggest you to use this first:
1. Method
This will log the attempt of connection to port 22 (whether there is sshd listening or not). You should see something like this in your logs (/var/log/messages, or in syslog, iptables.log - try to find it!).
If you cannot find this it means that the attempt didn't reached the Linux host.

2. Method
You can run tcpdump to see the network traffic on Linux host while trying to connect to the port 22. Command:
Output:
Please post from where (what PC) you are connecting to the Linux host while you are trying the previous steps (for example - Win7). Also what software are you using (for example - putty).
Test it and we can proceed to next step.

I ran putty and it did some key generation stuff and I can now connect via ssh using TeraTerm. I still can't connect from a VMWare terminal using "ssh root@192.168.0.2" from the Windows 7 machine like I can from the XP machine.

Thanks for the info hua.