Monthly Archives: October 2008

Some fun networking with MS-DOS & Novell Netware.

Posted on by
5

Ok I wanted to do this eventually but now I’ve finally done it. I have constructed something a little complex but it works surprisingly well.

Let me draw a picture so it’ll be a little easier to follow:

proxmox Netware diagram

proxmox Netware diagram

 

All of the machines in clouds are virtual…

Ok I’m going to assume you can install & configure OpenVPN on your own. I did a really simple install on Proxmox VE, just be sure to use the e1000 network adapters. All the others gave me tones of errors with any sizable traffic. Also I should point out that I’m using OpenBSD 4.3 which is the latest as of today.

dev tun0
dev-type tap
ca /etc/openvpn/ca.crt
cert /etc/openvpn/server.crt
dh /etc/openvpn/dh1024.pem
key /etc/openvpn/server.key
server-bridge 192.168.6.33 255.255.255.224 192.168.6.50 192.168.6.62
push “route 192.168.6.0 255.255.255.0”
push “dhcp-option DNS 192.168.6.34”
client-to-client
duplicate-cn
keepalive 10 120
max-clients 100
persist-key
persist-tun
status /var/log/openvpn-status.log
verb 3
tun-mtu 1500
fragment 1300
mssfix
float

Again I just followed the example from the OpenVPN site to set this up. What makes this different though is the fact that I’m using this in a bridge mode. As you can see I have told OpenVPN that it is to use the tun0 interface as a ‘tap’ driver.

My hostname.tun0 is this:
Link0 up

Likewise the bridgename.bridge0 is:
add em1
add tun0
up

And finally for this example my bridgename.em1 is:
inet 192.168.6.33 255.255.255.224 NONE

So using this setup I have a ‘private’ 192.168.6.32/27 network in which I’ve got a few virtual machines running and space for my laptop to VPN into. Now one of the virtual servers on my Proxmox server is Windows NT 4.0 Terminal Server… Yeah I know I got it cheap on ebay, and I kind of like it. Anyways I’m running Qemu on it, which is running Netware 3.12. I installed the libpcap then I had to find out what my Ethernet devices are called. I used wireshark (it was ethereal) and it’s a cool program to have around. The last version to run under Windows NT 4.0 was 0.99.4 so that’s the one I used. Once I have done this I found my device and was able to setup a string for Qemu (which was \Device\NPF_RTL80291)

Here is what I’m using:

Qemu –had netware.disk –m 16 –M isapc –L pc-bios –net nic –net pcap,devicename=”\Device\NPF_RTL80291”

This sets up an ISA computer with 16 megaybtes of ram and a single ISA nic that will utilize libpcap to send out frames on the rtl80291 that’s being emulated to my NT terminal server by proxmox.

On the ‘client’ side of things, I’m running the 64 bit version of Vista. So I’ve installed the OpenVPN that not only has 64 bit device drivers, but has a nice little GUI to connect & disconnect from the networks. Here is the OpenVPN config that is on my laptop.

dev tap
ca ca.crt
cert client1.crt
key client1.key
client
proto udp
remote 192.168.1.75 1194
resolv-retry infinite
nobind
persist-key
persist-tun
;comp-lzo
mssfix
tun-mtu 1500
fragment 1300

Ok, so far so good. Now I do have Virtual PC 2007 on my laptop, and I have made sure that the “Virtual Machine Network Services” were bound to the “TAP-Win32 Adapter V9” interface.

The it’s a simple matter of connecting to the VPN, then loading up the virtual PC with MS-DOS & the Novell Netware client.

Then you should be able to ‘bind’ to the server & login!

dos netware client

dos netware client

The ‘cool’ thing about this setup is that it will work over things like wifi, and easily allow you to add clients near & far. Oh and the best part for the wifi crowd is that it will use REAL encryption since WEP/WPA have all been shown to be useless. Oh yes, and it should allow you to host your DOOM, Quake 1, Rise of the Triad, Warcraft II, and Descent games…. Along with people playing at home! Using this you too can build your own IPX/Internet network!

I do hope this clears some of the uses & versility of Virtual servers, Qemu & Virtual Networking.

Netware 3.12 with Qemu

Posted on by
2

Ok I’m getting more requests on this which means I’ll finally do it.. I didn’t mean to put it off THIS long, honestly!

I have issues with Qemu 0.91 under Vista so this will all be with Qemu 0.90.

I have built a version with the libpcap compiled in, and placed a copy of the winpcap that I’m using in with this zip.

You can download the libpcap enable Qemu for Win32 right HERE.

I’m using the enclosed 1.cmd to run the thing, and I’ll go over more of it tomorrow.

Synchronet / Synchterm BBS fun!

Posted on by
1

 

Well the last while I have ‘rediscovered’ the fun of BBS’ing. There is a resurgence of popularity of the Synchronet BBS software. The cool thing about it is the ease to setup the QWK messages (it just uses ftp!) and within 30 minutes of downloading and installing I had myself a node VERT’s quicknet!

You too can download your very own BBS software here.

There is even a GREAT terminal emulator suitably named Syncterm that completes the experence. It supports rsh, telnet, ssh, x/y/z modem and cool ANSI graphics!

Another exciting aspect of the whole thing is that you can easily link up USENET servers with this BBS software… And of course it provides some involved web server wirtten in javascript.
The source to the whole thing is GPL’d so there is some hope that this will allow BBS’s to continue out there for some time.
Oh yeah and I did get a VPS so I do plan on hosting some of the old files from vaxenrule.com .. In ther interim though you can connect to the ‘underground’ BBS @ 75.127.119.16 … You could telnet in with any old telnet client, but I’d suggest Syncterm!
—-
Update that address has long since passed it is now bbs.superglobalmegacorp.com …!

Proxmox VE

Posted on by
Reply

Well frankly I’ve been majorly disappointed with Microsoft’s latest offerings in the world of virtualization. Frankly it’s been one BIG step backwards in terms of management.

I mean check this well meaning blog on how “easy” it is to setup remote management. And of course for the most part it NEVER works.

I know this must be a major news flash to Microsoft but you see virtual servers are like mainframes. The zone 0 OS must be able to stand on it’s own, and have just enough to bootstrap the hypervisor and allow itself to be managed in a stand alone fashion. After all if it were in a domain, where do you think those domain controllers are? Yep they are Virtual machines! And how do you ‘manage’ a domain resource with no DC’s? The whole 2008 Hyper-V is a BIG miscalculation on Microsoft’s part. I hope they wake up and notice how they had a good thing and have destroyed it.

All this nonsense sent me searching for an alternative which I’m pretty sure I found a great blend of system emulation, and something like SUN containers for Linux. There is even a Debian etch based quick install version called Proxmox which incorporates KVM (The new Linux hypervisor) and OpenVZ. And of course it’s FREE!

The cool thing is that the main management works on a web page, the consoles can be controlled via a VNC viewer that uses JAVA, and it’s VERY quick to setup.

The system emulation KVM uses the core devices from Qemu so a lot of Qemu virtual machines will “just work” if you copy them over. If you are installing an OS onto the virtual machine the ‘easy’ way is with the physical CD, you can use ISO images, however they are awkard to use. You have to flag the VM to pause on startup switch over to the monitor page and issue the following command:

change ide1-cd0 /directory/isoimage.iso

then tell the emulator to start up with the ‘c’ command which will continue from the pause…. Yeah I know it’s not terribly eligant.

On the OpenVZ front, it’s FAST as there is no real emulated IO it’s native. So I decided to use the wiki template and setup a wikipedia mirror at home. If anyone feels as brave you too can find instructions here:

These are some of the table times to load:

601M pages.sql Query OK, 7,473,186 rows affected, 8 warnings (5 min 10.52 sec)
837M revision.sql Query OK, 7,473,200 rows affected, 65535 warnings (2 min 11.84 sec)
18G text.sql Query OK, 7,473,202 rows affected, 1 warning (12 min 12.07 sec)
20M category.txt Query OK, 471,207 rows affected (13.14 sec)
1.8G categorylinks Query OK, 24,501,837 rows affected, 30177 warnings (28 min 28.31 sec)
5.6G externallinks Query OK, 36,492,925 rows affected (3 min 50.34 sec)
362M latestimage Query OK, 807,906 rows affected, 2 warnings (34.35 sec)
555M imagelinks Query OK, 18,615,721 rows affected (10 min 49.60 sec)
32k interwiki Query OK, 651 rows affected (0.08 sec)
186M langlinks Query OK, 5,780,509 rows affected (2 min 17.75 sec)
2G logging Query OK, 16,398,421 rows affected (2 min 51.75 sec)
45M oldimage Query OK, 118,449 rows affected (1.97 sec)
7.6G pagelinks Query OK, 270,641,297 rows affected (6 hours 12 min 4.83 sec)
104M redirect Query OK, 3,234,481 rows affected (23.71 sec)
1.2G template-link Query OK, 48,885,222 rows affected (50 min 7.08 sec)
68k user_groups Query OK, 3,947 rows affected (0.11 sec)

Even the ‘longest’ part here with the 270 million records took six hours… Not too bad! That’s still 12,122.88 TPS!

Also as a tip for anyone else crazy enough to do a sizable mediawiki (like wikipedia) or any single server wiki look to this page.

The upshot is that by loading this APC
extension into PHP and mediawiki load times for my cached site went from 2-5 minutes to 1-10 seconds.

The OpenVZ portion has various application templates that can be loaded into the zones from CentOS, Debian, Ubuntu, to pre configured applications like the media wiki and a few others.

If anything I’d say that proxmox is what I was hoping Microsoft’s Hyper-V could have been. A container version of windows with easy remote admin along with some system emulation could have made things MASSIVLY easier to deal with. It’s a shame they decided to go with this bizarre WMI based thing.