[Imc-tech] Yay Router!

Sat May 12 11:40:13 CDT 2001

Thanks, Zach!

Ellen, Erek, et al.:

Since Zach has the router working, it seems like there's no need for us
to meet today at noon, but I will drop by the IMC just in case.

Dave

On Sat, May 12, 2001 at 07:10:52AM -0500, Zachary C.Miller wrote:
> Nearly 11 hours later...
> 
> I came, I saw, I recompiled.
> 
> There is now a working debian masquerade router with DHCP server in
> the wiring closet all hooked up properly and running!
> 
> Now you can plug in a computer to ANY of the B jacks on jacks 1-12 and
> get on the net. If the computer you plug in supports DHCP then it will
> "just work".
> 
> Sergei is a Special Case
> 
> For some reason Sergei's ethernet card is not compatible with our
> hub. When Sergei is plugged into our hub the entire hub ceases to work
> even if Sergei is off. This took me a while to figure out.
> 
> This could be a sign that we really ought to get a newer hub. 
> 
> So Sergei (Jack 7B) is still plugged directly into the DSL router and
> gets its DHCP info from it. This has a couple of consequences:
> 
> 1) Sergei is not behind the firewall and is as open to attack as it
> has always been while other machines are now a bit more safe behind
> the firewall.
> 
> 2) Until/unless we reconfigure the DSL router's DHCP server it is
> possible that the DSL router will assign Sergei the same IP address
> that the linux box is using because the linux box isn't using DHCP to
> get its IP address because we specifically want to make sure the linux
> box has a static IP address. We can remove the linux box's IP address
> from the set of IPs that the DSL router hands out to prevent this but
> I am too tired to figure out how at the moment. 
> 
> So if at some point you boot Sergei and the whole net ceases to
> work...try rebooting Sergei again (so it gets a different IP
> address). The IP address of the linux box is 64.5.74.245. That is the
> one that Sergei should not get.
> 
> Managing The Hub
> 
> I tried connecting a dumb terminal to the hub to I could play with its
> management features but I found out that it has a password set. Paul
> do you know the password? Would the person you bought the hub from
> know the password? Kinda sucks if we can't config the hub but it isn't
> the end of the world.
> 
> Root Password for the Router
> 
> The Linux box's root password is known only by me at the moment. If
> you feel you have a need for it let me know. 
> 
> The linux box can be remotely accessed via SSH at indie-245.soltec.net.
> 
> Connecting a Computer Without DHCP
> 
> If you want to connect a computer that does not support DHCP then you
> can use these network numbers (these are the numbers for our internal
> LAN which is behind the linux router):
> 
> IP address: 192.168.1.16 - 192.168.1.127
> Subnet Mask: 192.168.1.255
> Network: 192.168.1.0
> Gateway: 192.168.1.1
> DNS Server: 192.168.1.1
> 
> IP Allocation Scheme
> 
> My IP allocation scheme is that all IP's from 192.168.1.1-192.168.1.15
> are reserved for our use for servers and such. All IPs from
> 192-168.1.16-192.168.1.127 are for static allocation to people without
> DHCP. All IPs from 192.168.1.128-192.168.1.254 are handed out by the
> DHCP server on the linux box.
> 
> Other Things Done
> 
> While I waited many tedious hours for the kernel to build on this
> machine (on my machine at home it takes 5 minutes to build a
> kernel. on this one it takes about 2 hours and due to mistakes I had
> to build the kernel 3 times!) I did a number of random chores:
> 
> I cleaned up the wiring closet, vacuumed it, and organized some of the
> wiring. 
> 
> I attached all the wall boxes to the wall in the back room using
> screws and adhesive and I also secured the cables with tacks.
> 
> I feel like there is some other stuff but I can't think of what it is.
> 
> The Hardware
> 
> The linux box is a Compaq Deskpro XL 560 with 14MB RAM and 256MB
> harddrive (I had to get _real_ creative to squeeze everything onto
> that harddrive). It has a SCSI interface but its system drive is
> IDE. It has a "lance" ethernet board on the motherboard and a
> "ne2k-pci" ethernet board in a PCI slot. It has a monitor but once we
> feel the machine is working well we can take the monitor away for use
> with a different machine and just plug a monitor in when we need to do
> diagnostics.
> 
> When you boot the machine you can enter "diag" at the LILO prompt to
> enter the BIOS setup program which physically resides as a bootable
> partition on /dev/hda3...this is a silly compaq-ism. 
> 
> The Software
> 
> This is a very minimal linux install. There are some security updates
> that I ought to run but I don't feel like it now. I can do this
> remotely...in the mean time there aren't really any fears of security
> compromise because all the ports are wrappered to block everyone
> except ssh and snmp and there are no other interesting daemons
> runnings.
> 
> I'm just ranting now. I'm sleepy. Goodnight.
> 
> Someday I'll teach everyone how to deal with Debian and how this
> machine works but for now I'm taking a good long break since
> everything "just works" and I've spent a _lot_ more than my prescribed
> share of time here tonight...but it was fun and satisfying.
> 
> I'm such a volunteerism junkie. 
> 
> -- 
> Zachary C. Miller - @= - http://wolfgang.groogroo.com/
> IMSA 1995 - UIUC 2000 - Just Another Leftist Muppet - Ya Basta!
>  Social Justice, Community, Nonviolence, Decentralization, Feminism,
>  Sustainability, Responsibility, Diversity, Democracy, Ecology
> 
> 
> 
> 
> 
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-- 
David Young                   On the Job Consulting
dyoung at onthejob.net     Urbana, IL * (217) 278-3933