Windows network neighbourhood browsing is based on Netbios. It works
fine on a homogenous Windows LAN and Samba. I could not get it working
across LANs bridged using TCP/IP. I once (in 1999) had a TCP/IP RAS box
for inbound dial up connectivity to a LAN. Browsing did not work.
However, using the dial in facility to a modem on the NT server running
NT RAS services gave this facility. No change on client or server side.

I doubt if you can achieve what you want over IPSEC links. Will stand
corrected if any one else had been able to get it working.
 
Mohan

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Charles
Steinkuehler
Sent: Saturday, June 21, 2003 10:13 AM
To: Jaime Nebrera Herrera
Cc: [EMAIL PROTECTED]
Subject: Re: [leaf-user] Windows VPN newbie


Jaime Nebrera Herrera wrote:
>   Hi all,
> 
>   I want to stablish a net to net VPN using Bering as a gateway. On 
> both ends
> will have windows machines :(
> 
>   They want to see both nets as a whole, with all computers (remember 
> windows)
> showing in the explorer, so they can access a shared hard disk from
both 
> sites.
> 
>   I want to do this the easiest and cheapest way. Options considering:
> 
>   1) If possible use only one "PC" on each end. I dont know if they 
> have a WNT
> or W200 server that could act as a WINS server, but adding a linux (or
a 
> couple of) just for WINS is not desirable unless there is no other way

> (higher price and complexity).
> 
>   2) How bad isfor security adding WINS (samba) in the gateway?
> 
>   3) Even better, is really necesary to have a WINS service? I know 
> that for
> IP services (http, ftp) there is no need for it, but the user just
want to 
> see the whole as if there was no "separation in the middle :)"

A WINS server gets you name resolution, but it does *NOT* provide 
cross-subnet browsing (the "official" term for what you describe you're 
wanting), although it's typically a required piece of most cross-subnet 
browsing setups.

>   4) What option is better, PPTP or FreeSWAN? Remember, both in the
> gateway/firewall. Do I need WINS if I use PPTP?

FreeS/WAN is better (from a security standpoint).  Using PPTP may work 
easier for browsing, but I've never tried to set this up, so I'm not 
sure what features/limitations PPTP provides (other than a pretty much 
guaranteed lack of security from anyone actually interested in reading 
your data...PPTP will secure you from the idly curious, but not anyone 
actually wanting to break into your VPN).

>   I know this are very basic questions, is there any good online 
> documentation
> about this topics?
> 
>   Very thankful in advance. Regards.

I'm not a windows networking guru, but have been through enough of 
trying to link remote windows networks to help out with a few issues.

First of all, I suggest trying to setup a subnet-subnet IPSec VPN link 
between your two firewalls.  This reduces the problem to getting windows

boxes to talk to each other across a router.  There are two aspects of 
the windows portion of the problem:

1) Sharing network resources across subnets

2) Browsing network resources across subnets

Note that these are *VERY* differnet problems.  Browsing on MS networks 
typically works by using broadcast traffic, which won't pass through 
your router/firewall/VPN appliance.  Drive mapping, however, can be done

directly using IP addresses, DNS names (if you have entries for the 
system(s) in a zone file or in your hosts file), WINS name, etc.

If you can get by with manually mapping drives instead of browsing (ie 
manually typing in an IP or computer name rather than clicking the 
proper computer from a tree view with the mouse), what you want is very 
simple...just get the VPN link running, and type \\192.168.1.44 (or 
whatever the appropriate far-end IP is) when you're trying to map a 
network drive or printer.

If, however, you want to "browse" to the remote resouce, you have a much

bigger problem.  The official microsoft way to do this is to run 2K 
server (probably .net server by now) on *EACH* subnet.  You eliminate 
the server install on one side of the network if you have all systems 
log into the same domain controller (requires a WINS server for name 
resolution, and proper configuration of the remote systems so they know 
how to find the WINS server on the far subnet...this can be setup via 
dhcp, so it's really not too bad).  The Microsoft site has a lot more 
info on what's required to implement this in the "approved" way...a 
search for "cross subnet browsing" should turn up lots of info.

Samba servers can help mitigate a lot of the problems incurred due to 
the artificial limitations of Microsoft's software (you'd think they 
want to sell tons of copies of their server software or something), but 
I wouldn't suggest running Samba on your firewalls, and it doesn't sound

like you have extra boxes lying around to turn into server systems.

All of the above reflects what I've picked up trying to get my windows 
box to gracefully talk to the home office network across a subnet-subnet

VPN, but does not necessarily represent the best, or necessarily even 
appropriate way to do this in the microsoft world...I'm a linux 
networking guy, and know just enough microsoft networking to keep my 
2KPro desktop linked to the internet and the home office.

-- 
Charles Steinkuehler
[EMAIL PROTECTED]




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