[pptp-server] What do Select() errors mean?

Tue Jun 27 17:26:06 CDT 2000

Re: Select()

The problem was user error... ME.

I have two connection points on the clients I was trying to use.

Either Dialup or via a local LAN/Cable modem/Masq connection.

I had originally deleted VPN after installing Windows.

I manually re-installed it. This creates the single VPN entry in the network
properties box in the control panel.

This works fine for my LAN connections but I kept getting select() errors
when attempting to connect via a dialup ISP.

I finally discovered what the Second VPN #2 dialup adapter was for.

It is used to enable VPN over dialups. PPP "rides" the second adapter.

After removing all vestiges of networking from the clients then
re-installing the VPN #2 connection re-appeared. This eliminated the
select() errors and permitted the clients to log in...

Otherwise I'm just running PPP 2.2.11 with the patch file applied.

options file contains

debug
+chapms
+chapms-v2
name firewall
remotename remote
mppe-40
mppe-128
mppe-stateless
require-chap
proxyarp
auth

chap-secrets contains

domain\\admin    *               password          *
firewall        domain\\admin    password          *
remote          *                password          *
*               remote           password          *

---

Now I know the tunnel works, because I can do things like run PC-ANYWHERE
thru the tunnel to machines on the remote LAN... but I am still totally
unable to view the shares.

I can even use the remote gateway.

Do you have any idea on what I might have missed?

The VPN clients log in just fine. They seem to authenticate via PoPToP even
with "Log in to Network" enabled...

However I cannot browse or attach to ANY shares on the remote LAN.

Even attempting to connect to a workstation share fails.

The remote LAN has a PDC and BDC, with TCP/IP enabled and working.

I've tried various versions of chap-secrets entries... the logs indicates
that the login and domain logon works... but I don't know if the PoPToP box
is actually passing requests to the NT PDC...

I even force the username in options with

name firewall
remotename domain\\admin

But still no shares.

Thanks.

-JMS

|-----Original Message-----
|From: Brian Aust [mailto:BAust at healthdec.com]
|Sent: Tuesday, June 27, 2000 4:43 PM
|To: 'opjose at ex-pressnet.com'; nmeyers at javalinux.net
|Cc: pptp-server at lists.schulte.org
|Subject: RE: [pptp-server] What do Select() errors mean?
|
|
|JMS,
|
|What did you wind up doing to the Winblows client to eliminate the SELECT()
|error?
|
|I've got a poptop server myself which only SOMETIMES works.  Sometimes my
|Winblows client can connect, and see all the internal machines and
|everything, but then the next time i try it i get a select() error in the
|/var/log/messages file, and the winblows client just hangs on the Verifying
|Username... screen.
|
|I'm excited that this SOMETIMES works, but I'm trying to roll this out to
|three coworkers in Britain, and i can't have it only work "sometimes".
|Anything specific that you modified?  There only seems to be so
|much one can
|change on the winblows DialUpNetworking client -- very few options, etc.
|
|Were there changes you made on the server??
|
|Cheers,
|Brian
|
|Brian R. Aust
|Manager of Information Technology
|Health Decisions, Inc.
|1512 East Franklin St.  Suite 200
|Chapel Hill, NC   27514
|919.967.2399 x247
|baust at healthdec.com
|
|
|> -----Original Message-----
|> From: Jose M. Sanchez [mailto:opjose at ex-pressnet.com]
|> Sent: Tuesday, June 27, 2000 1:25 PM
|> To: nmeyers at javalinux.net
|> Cc: pptp-server at lists.schulte.org
|> Subject: RE: [pptp-server] What do Select() errors mean?
|>
|>
|>
|> Thanks, I discovered that the cause was that I had not set up
|> VPN properly
|> on the Winblows client... I've lost SOOOO much time on this one...
|>
|> (That's what the second VPN connection was for!!!).
|>
|> Well now I have it working... sort of... I can't see any
|> windows shares on
|> the remote LAN I'm connected to, even though I'm able to log
|> in properly,
|> and I can access the remote gateway.
|>
|> I've given it the correct domain\\username in chap-secrets
|> but the domain
|> logons do not work under windows...
|>
|> You wouldn't have any ideas on where to look?
|>
|> Thanks
|>
|> -JMS
|>
|> |-----Original Message-----
|> |From: nmeyers at javalinux.net [mailto:nmeyers at javalinux.net]
|> |Sent: Tuesday, June 27, 2000 11:09 AM
|> |To: opjose at ex-pressnet.com
|> |Cc: pptp-server at lists.schulte.org
|> |Subject: Re: [pptp-server] What do Select() errors mean?
|> |
|> |
|> |"Jose M. Sanchez" wrote:
|> |
|> |> Hi all...
|> |>
|> |> Does anyone know what server side select() errors mean?
|> |
|> |Usually it means that the remote client has ended the
|> session, causing
|> |the server to detect a disconnect when using the select()
|> call. Unless
|> |you're seeing bad behavior, it's nothing to worry about.
|> |
|> |Nathan
|> |
|> |>
|> |>
|> |> What does this refer to?
|> |>
|> |> Thanks
|> |>
|> |> -JMS
|> |> opjose at ex-pressnet.com
|> |>
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