Infastructure vs. AdHoc

CORE244 · 06-11-2005, 10:25 PM

I am currently using two desktops and a roaming laptop in the house, each one with a wireless connection to a single Linksys BEFW11S4v4 (B) Router. The laptop is using a WPC11v4 (PCMCIA), and the desktops are using a WMP11v4 and a NetGear WG311 respectively. All 3 computers are running MDK 2005 LE, and all 3 required ndiswrapper to get working. All 3 can connect to the internet simultaneously, but I cannot "see" the others on the LAN no matter what I try. With firewall disabled, still no luck. Is it because I'm using the "managed" mode instead of "AdHoc"? If I switch to AdHoc do I lose my multiple connectivity? I am absolutely a newbie, please any help would be awesome. Does anyone know of an FAQ that explains (in simple terms) a multiple workstation wireless network?

If it makes a difference, I can ping other machines in my network but telnet session is refused by the remote host(s), and Mandrake Control Center Remote Administration is not happening--Error, Unable to connect to VNC Server!!!

Any suggestions?

n0sr · 06-11-2005, 10:42 PM

Quote:

Is it because I'm using the "managed" mode instead of "AdHoc"? If I switch to AdHoc do I lose my multiple connectivity?

AdHoc mode is for connecting two workstations to each other directly without using the wireless AP. If you connect to the AP use managed mode. (The AP will manage the connection.) Sounds like you've got everything working correctly if you can ping the other machines. (See below)

Quote:

I can ping other machines in my network but telnet session is refused by the remote host(s)

That may be completely normal. If I attempt to telnet to my local machine I get the same response:

Code:

$telnet localhost
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
$

The telnet service is not enabled on my machine. I do however have ssh and that may be available to you.

CORE244 · 06-11-2005, 10:52 PM

Well, I gave it a try...

The ssh did not get through either:

[root@localhost jason]# ssh 192.168.1.100
ssh: connect to host 192.168.1.100 port 22: Connection refused

I have all services (temporarily) enabled on the target, no firewall.

n0sr · 06-11-2005, 11:03 PM

That may just be a configuration issue. There is a thread that I believe has ssh configuration tips (was dealing with some hack attempts). Check out

http://www.linuxquestions.org/questi...hreadid=215431

Unfortunately I'm not in a position to help you with more detail at the moment.

Oh yeah, do you have any firewall running? There could be a rule that is stopping things.

CORE244 · 06-11-2005, 11:54 PM

I managed to connect using tightVNC after I set the target machine to accept requests from my laptop IP, password file, and default virtual terminal#. The only problem now is that while having full run of the system is pretty cool, I still am not able to share filesystems over the network. This may be a stupid question, but do I need to run apache (or similar server) to share files within my intranet?

n0sr · 06-12-2005, 12:04 AM

OK, check this for your ssh configuration:

Edit /etc/ssh/sshd_config to make sure these options are set:

Code:

Protocol 2
HostKey /etc/ssh/ssh_host_rsa_key
PermitRootLogin no
RSAAuthentication yes
AuthorizedKeysFile     .ssh/authorized_keys
PasswordAuthentication no
UsePAM no

Restart sshd (When you run this command it will tell you the PID of sshd, use that number in the second command)

Code:

ps -aux | grep ssh
kill -HUP <ssh-pid>

Then create yourself a key to use:

Code:

ssh-keygen -t rsa

Just hit enter when prompted for password or any other parameters.

Copy the id_rsa.pub to your ~/.ssh/authorized_keys

Code:

cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys

Now ssh to another machine (change the IP address to match one of your machines):

Code:

ssh 192.168.1.5

The first time you do this you'll see this, answer yes:

Code:

The authenticicity of host '192.168.1.5 can't be established.
RSA key fingerprint is ##:##:##:##:##:##:##:##:##:##:##:##:##:##:##:##.
Are you sure you want to continue connecting (yes/no)?

That should do it, you should be in, and it won't complain about authenticity the next time.

n0sr · 06-12-2005, 12:08 AM

Quote:

I managed to connect using tightVNC after I set the target machine to accept requests from my laptop IP, password file, and default virtual terminal#. The only problem now is that while having full run of the system is pretty cool, I still am not able to share filesystems over the network. This may be a stupid question, but do I need to run apache (or similar server) to share files within my intranet?

The best option is probably to run nfs, but I think you can also run samba. Sorry, but I don't do either of those so I can't help with their config.

CORE244 · 06-12-2005, 12:29 AM

Thanks! I'l get started on those keys & restart sshd & give 'er a try. I have a feeling this will do it!

n0sr · 06-12-2005, 12:41 AM

Cool, post if that works for you. Also you might look at the nfs-howto document at
http://www.linux.org/docs/ldp/howto/...WTO/index.html
That will help you with directory sharing.

ignorant_savant · 06-12-2005, 01:34 AM

Most distributions disable remote login capabilities as default for security reasons, this is why telnet and ssh is disabled unless you set it up otherwise. These programs then require the use of either ftp or sftp to transfer files from one another. Using nfs be much easier with moving files by drag and drop.

CORE244 · 06-12-2005, 01:48 AM

Thanks for all of your help! I can connect with ssh, but I'm not able to start the xwindow server. Is there a way this can be done?

[jason@darkstar ~]$ ssh 192.168.1.100
jason@192.168.1.100's password:
Last login: Sun Jun 12 01:41:44 2005
[jason@localhost ~]$ startx

Fatal server error:
Server is already active for display 0
If this server is no longer running, remove /tmp/.X0-lock
and start again.

Please consult the The X.Org Foundation support
at http://wiki.X.Org
for help.

[jason@localhost ~]$

Is there some way I can specify a different display?

CORE244 · 06-12-2005, 01:50 AM

Thanks! I'll read up on NFS after this.