LAN > WLAN problems - Draytek Vigor

Hi,

I have a Draytek Vigor 2500VG, over a DSL connection. (bridged over a
modem)

Here's my problem:

I have numerous PCs (GNU/Linux and Windows) all with file shares
enabled. Now, from within my LAN I can browse all file-shares perfectly.
The same cant be said from my wifi clients..

From a wifi PC I can browse my network shares, connect fine etc.
However, the moment any LAN based client tries to access a share on my
wi-fi laptop nothing happens. The request just times out. What on
earth is stopping my wifi clients from having their file shares blocked
to anyone within the LAN?

There are no local firewall(s) enabled on my client PCs, ideally i need
to try another router to see if this is the cause of the problem! In
addition to this, the moment I plug an ethernet cable into one of my wi-
fi clients, my file sharing to the laptop (the wifi machine) works
perfectly! So, it's not a configuration problem.

I've run ethereal on the connection and it would appear that the packet
is coming back from the laptop, albeit with a bad checksum (this is
normal though), but no connection is granted. telnet <wifi laptop> 445
just times out. Whereas if I plug in an ethernet cable and do 'telnet
<ether laptop> 445' i get connected!

Just what is going on?

Anyone have any ideas?

Cheers,
Chris

---

› See More: LAN > WLAN problems - Draytek Vigor

In article <[email protected]>,
[email protected]d says...
<snip>

Sorry, completely wrong group! Brain was thinking something to what
hands were doing!

Cheers,
Chris

In article <[email protected]>,
Chris <[email protected]> writes:
> Hi,
>
> I have a Draytek Vigor 2500VG, over a DSL connection. (bridged over a
> modem)
>
> Here's my problem:
>
> I have numerous PCs (GNU/Linux and Windows) all with file shares
> enabled. Now, from within my LAN I can browse all file-shares perfectly.
> The same cant be said from my wifi clients..
>
> From a wifi PC I can browse my network shares, connect fine etc.
> However, the moment any LAN based client tries to access a share on my
> wi-fi laptop nothing happens. The request just times out. What on
> earth is stopping my wifi clients from having their file shares blocked
> to anyone within the LAN?
>
> There are no local firewall(s) enabled on my client PCs, ideally i need
> to try another router to see if this is the cause of the problem! In
> addition to this, the moment I plug an ethernet cable into one of my wi-
> fi clients, my file sharing to the laptop (the wifi machine) works
> perfectly! So, it's not a configuration problem.
>
> I've run ethereal on the connection and it would appear that the packet
> is coming back from the laptop, albeit with a bad checksum (this is
> normal though), but no connection is granted. telnet <wifi laptop> 445
> just times out. Whereas if I plug in an ethernet cable and do 'telnet
> <ether laptop> 445' i get connected!
>
> Just what is going on?
>
> Anyone have any ideas?

Are the LAN and WiFi the same network? I can imagine this would
cause the problem you describe as several of the systems will
have multiple NICs on the same network, and will likely only
use one of them for routing. Different OS's behave in different
ways in such wierd setups.

If you really want multiple networks with multiple routes between
the networks to work transparantly, you're probably going to have
to run a proper routing protocol on the networks.

--
Andrew Gabriel

In article <[email protected]>, andrew@a17
says...

[are we ok to remove uk.telcom.mobile from this x-post? It's off-topic
and i shouldn't have originally posted it there, it was a complete
mistake]

> > I've run ethereal on the connection and it would appear that the packet
> > is coming back from the laptop, albeit with a bad checksum (this is
> > normal though), but no connection is granted. telnet <wifi laptop> 445
> > just times out. Whereas if I plug in an ethernet cable and do 'telnet
> > <ether laptop> 445' i get connected!
> >
> > Just what is going on?
> >
> > Anyone have any ideas?
>
> Are the LAN and WiFi the same network?

Hi, appreciate your reply.

They are on the same network, yes. 192.168.2.0/16

> I can imagine this would
> cause the problem you describe as several of the systems will
> have multiple NICs on the same network, and will likely only
> use one of them for routing. Different OS's behave in different
> ways in such wierd setups.

All good points, and I can see where you're coming from - see my below
post.

> If you really want multiple networks with multiple routes between
> the networks to work transparantly, you're probably going to have
> to run a proper routing protocol on the networks.

Would RIP2 suffice? I ran this on my Netgear, but i can't appear to
find it on my draytek. If RIP2 needs implementing then I can take this
up with Draytek. At least now I know what is preventing my setup from
working correctly!

I'll have to grab a debian wifi laptop from work on monday and see how
that works within my (W)LAN. Do you have any suggestions re the routing
protocol?

Thansk again,
Chris

In an earlier contribution to this discussion,
Chris <[email protected]> wrote:

> Hi,
>
> I have a Draytek Vigor 2500VG, over a DSL connection. (bridged over a
> modem)
>
> Here's my problem:
>
> I have numerous PCs (GNU/Linux and Windows) all with file shares
> enabled. Now, from within my LAN I can browse all file-shares
> perfectly. The same cant be said from my wifi clients..
>
I have similar problems using a 3Com wireless router. I have a wirelessly
connected laptop which sometimes refuses to talk to wired PCs and vice
versa. When this happens, if I ping the wireless m/c from a wired one, and
vice versa, this usually gets them talking again.
--
Cheers,
Tim
______
Please reply to newsgroup. Reply address is invalid.

In article <[email protected]>, [email protected] says...
> In an earlier contribution to this discussion,
> Chris <[email protected]> wrote:
>
> > Hi,
> >
> > I have a Draytek Vigor 2500VG, over a DSL connection. (bridged over a
> > modem)
> >
> > Here's my problem:
> >
> > I have numerous PCs (GNU/Linux and Windows) all with file shares
> > enabled. Now, from within my LAN I can browse all file-shares
> > perfectly. The same cant be said from my wifi clients..
> >
> I have similar problems using a 3Com wireless router. I have a wirelessly
> connected laptop which sometimes refuses to talk to wired PCs and vice
> versa. When this happens, if I ping the wireless m/c from a wired one, and
> vice versa, this usually gets them talking again.
>
I have no problems communicating between WLAN > LAN. I can connect to
EVERY open port, BAR 445! It's something on the router, I swear. Why
would every port work fine from laptop (Wlan) to PC (eth lan) bar 445?
I know it sounds like a local firewall, but it isn't. Windows Firewall
is very much disabled, and there are no problems with file-sharing when
the laptop uses ethernet

Chris wrote:

> I have no problems communicating between WLAN > LAN. I can connect to
> EVERY open port, BAR 445! It's something on the router, I swear. Why
> would every port work fine from laptop (Wlan) to PC (eth lan) bar 445?
> I know it sounds like a local firewall, but it isn't. Windows Firewall
> is very much disabled, and there are no problems with file-sharing when
> the laptop uses ethernet

Try having a sniff with Ethereal [on windows and linux] and see what's going
on.

alexd
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