Flashfig on linux

RouterOS General
1

Hello !

I was looking for an Linux solution for Flashfig. As I couldn’t find one, I tried to build one myself.

I am pretty close now as I succeeded to push a configuration via Flashfig with a standard DHCP and TFTP server. Flashfig simply use the BOOTP protocol with option 60,128,129, next-server and boot filename. It then retrieve the configuration file with TFTP.

However, there is a tricky part. The configuration is compressed and I cannot determine what compression is used. So I am unable to fully reproduce a Linux solution of Flashfig. My current solution is to sniff the compressed configuration sent by the Windows Flashfig tool and retrieve the hex stream of the compressed file. After that, I am able to create a file with this hex stream and use it on my own TFTP server.

As you notice, it is not very handy. I would appreciate if anyone can help me find how the configuration is compressed. For the moment, I think I identify the file signature at the beginning of every file sent. It always start with 0x31 0x32 0x33 0x20 0xff 0xfe 0x04 0x00.

Cheers

2

Hi,
I too want to do this… but from the DHCP/TFTP services on another mikrotik router.
IE, I want to be able to send the rsc file from a mikrotik “server” via flashfig when I plug-in new routers.
I can get the file transfer via bootp, but don’t know how to compress the file beforehand.

Did you get anywhere with this?

3

Yes, I can compress the file but it is not handy. I do a first flashfig with the Windows Mikrotik tools and I capture the payload with Wireshark.

Then, I reuse the payload on my own tftp server and it’s working.

4

Did you ever solve this issue with the format of the file?

5

We use Flashfig on LTS Ubuntu via wine.

Works better then is does in win 10.

Have some scripted ssh for re-provisoning etc

Getting flash fig to work is a work of art all it’s self.

Keep it simple as possible just get the device online and pull the config from an ftp.

I’ve attached what we use.

Other tip:

Uses the Atom editor.
Really nice editor and someone wrote a microtik scripting module.

Finally the attached file was actually generated with
$ /export compact file=flashfig.rsc
You need to start with a clean (dhcp on ether 1, nothing else) Hap or whatever.
Add in the scripts and tasks you need then export.
flashfig.rsc (1.1 KB)

6

Hello,

@rcy, @Nicka Ketta and other, did you find how is compressed file (gzip, lzma, zip, 7zip, ect.)?

Best Regards,
Kamil

7

RSC is a plaintext file, what are you guys talking about?

8

Probably they are referring to what is actually transmitted to the device(s), likely flashfig “converts” the source .rsc to a binary blob or some kind (compressed or more likely encoded) and transmits over the lan this latter.

9

Well hacking up your own netinstall alternative, good luck. Sorry but we can’t help.

10

Hi,

did someone figgured this out? I want to achieve the same thing.
I need to be able to get zero config to mikrotik device without using windows.

Thanks