[ILUG] DHCP, WINS, DNS and others..

[Alan Sobey]

> Hi All,
>
> I have been givin an ISDN line an router by work, bless them, and want to
> try and configure a few bits and pieces as follows.
> The rules are that I can connect my laptop to this router, which is
> password protected, and it autodials the office.
> What I want to do is to have a linux laptop running as an IP masquerading
> gateway which allows me to plug my laptop into my existing network, and be
> able to use it all fully.
> My potential problems, I think, are as follows:
> I am running my own DNS domain, WINS domain, but need the laptop to be
> able to see the ones on the other side of the router.
> Ideally I want my other machines to be able to sneak across the connection
> to the company proxy etc.

I don't think the DNS domain and WINS domain will affect anything.  If you
have IP Masquerading (ipchains) set up correctly you should be fine.  (Be
sure to filter any NetBIOS broadcasts from your non-laptop machines, these
would probably be sent out unless you explicitly tell them not to)  You may
have problems with (non-passive) ftp - but maybe not if you set up ipchains
to incorporate this.  Any problems you'll have are likely to be at the
application level (e.g. quakeworld, real audio, ICQ etc.).  Net-browsing
should be fine.  You should probably try monitoring with tcpdump to see if
anything's going where it shouldn't.

As always, standard disclaimer: I could be wrong. :)

Alan.