Re: Booting NSLU2 without using the serial port

[Donald T Hayford <don%donhayford.com@localhost>]

Donald T Hayford wrote:
> Steve Woodford wrote:
> > On Thursday 14 February 2008 11:42:03 Donald T Hayford wrote:
> >
> >  
> > > Hmm, though reading this over I wonder if
> > >
> > > config   netbsd   root on 192.168.1.102:/client/root type nfs
> > >
> > > might work as well.  I know how to set up the NFS root.
> > >     
> >
> > The following line:
> >
> > config netbsd root on npe0 type nfs
> >
> > along with:
> >
> > options NFS_BOOT_DHCP
> >
> > will do what you want, assuming your DHCP server is configured 
> > correctly. For example:
> >
> > host nslu2 {
> >         hardware ethernet 00:0f:66:01:23:45;
> >         fixed-address 192.168.1.102;
> >         option root-path "/client/root";
> > }
> >
> > Cheers, Steve
> >
> >   
> That worked, Steve.  Thanks very much for the suggestion.  What this 
> means is that we can boot NetBSD on the NSLU2 without having to do the 
> serial port hardware mod.  Maybe that will encourage some 
> non-hardware-oriented hackers to try BSD.
>
> If I get some time this weekend, I'll try to write up a few more 
> details.  For all of you out there that can't wait, change the NSLU2 
> configuration file as described above by Steve, and build NetBSD as 
> described earlier on this list.  Set up your NFS & DHCP server with 
> the NetBSD files (even if it is a Linux machine, you can still set it 
> up).  Telnet into RedBoot (see the nslu2-linux.org howto site for 
> information on how to telnet into RedBoot) and set the IP address of 
> your TFTP server and tell the NSLU2 what file to load from the TFTP 
> server. just like you would have using the serial port.  As the NSLU2 
> boots, it will automatically look for the NFS server and use that to 
> find the root file system.  Before you boot the NSLU2, you'll need to 
> edit a number of files in /etc to setup up the NSLU2 network address, 
> enable sshd, and the like.  Once you have booted up the NSLU2, you can 
> mount a USB drive and install NetBSD to that.  Then, build another 
> kernel that uses sd0a as the source for root (change the npe0 to sd0a, 
> and nfs to ffs in what Steve wrote above).  From that point on, you 
> can telnet into the NSLU2 to boot the new kernel that uses the USB 
> disk for mounting root.
>
> Thanks again,
> Don
Well, almost.  I get it going up to the point where it mounts root from 
the NFS directory.  If I leave the line "rc_configured=NO" in 
/etc/rc.conf, it stays in single user mode and refuses ssh logins.  If I 
change the line to "rc_configured=YES", then it goes through the boot 
up, starts ssh, gives me the login prompt, but then requires a user 
name/password.  root/root works for the serial port, but not for ssh.

I have to confess, I'm not much of a security hacker.  I realize this is 
probably an anathema to most of you out there, but anybody know what to 
change to defeat the login security?

Thanks, Don