Roadshow and nullsana.device

[torsti76]

Hi,

I'm trying to wrap my head around setting up nullsana.device with Roadshow 1.13 to get Fusion to recognize ethernet on the Mac side.

I got as far as being able to ping the real LAN IP of the Amiga from the Mac, but forwarding to the router doesn't work.

Is this even possible with Roadshow?

Does anyone have this setup running?

Thank you and best,
Torsten

[funK]

I don't know anything about neither nullsana.device nor Fusion, though I can tell you that I successfully managed to get Roadshow working with vlink.device and Shapeshifter, so as long as their concept/behaviour is comparable it's definitely possible to make the Mac side connect to the internet through Roadshow.

[torsti76]

Originally Posted by funK

I don't know anything about neither nullsana.device nor Fusion, though I can tell you that I successfully managed to get Roadshow working with vlink.device and Shapeshifter, so as long as their concept/behaviour is comparable it's definitely possible to make the Mac side connect to the internet through Roadshow.

That sounds very promising. The concept of nullsana.device is identical to that of vlink. Can you post your Roadshow config here (or send me a PM)? That would be most helpful.

Thanks!

[funK]

Okay, here are the steps I took to make VirtualLink device work with Roadshow, hopefully they can be helpful for somebody else besides you.
Please note that I've got a pci ethernet card in my Mediator (it's the interface named 'MediatorFast' below) and that I also got a 10.0.0.x range LAN setup here, so if you're on 192.168.1.x or 172.16.0.x ranges then you should possibly change IPs (and interfaces) accordingly:

1. create a new route adding following line to DEVS:Internet/routes
   

   NETDESTINATION 10.0.0.0 VIA 192.168.1.254

2. enable ip forwarding in Roadshow with this command:
   

   SetEnv SAVE Roadshow/ip/forwarding 1

3. create 3 new IPNat rules by editing S:IPF/ipnat.rules file and adding following lines:
   

   map MediatorFast 192.168.1.0/24 -> MediatorFast/32 proxy port ftp ftp/tcp
   map MediatorFast 192.168.1.0/24 -> MediatorFast/32 portmap tcp/udp 10000:20000
   map MediatorFast 192.168.1.0/24 -> MediatorFast/32

4. obviously, create a VirtuaLink device into DEVS:NetInterfaces to activate virtual device on Roadshow TCP/IP stack startup.

Then, everytime I want to make MacOS side go online, I also manually start S:Start-Firewall script in order to make Roadshow read those IPNat rules as well, and then voilà! I'm able to browse the internet with either Netscape or Internet Explorer.

[torsti76]

Thank you very much for the thorough explanation. I didn't know how to create the ipnat rules in a proper way. The BSD-style of doing this is very different from Linux iptables, which I'm used to.

[funK]

Documentation is definitely not Roadshow strongest part, but have you already tried reading header comments in S:IPF/ipnat.rules, and also HELP:Roadshow/Reference/IP-Filter/ipnat-rules.doc help page?
Hopefully their configuration should be a bit more clear, then.

[torsti76]

I made a complete description of what needs to be done in my gitlab reposiory here: https://gitlab.com/tkurbad/amiga-har...lation#recipes

Thanks again, works like a charm...