Re: Help, I have some problem with LCP ConfReq

Does that error matter? I noticed that even with the successful
connection, the same error still occurs.

server info:
Linux skyxen 2.6.18-194.3.1.el5xen #1 SMP Thu May 13 13:49:53 EDT 2010
x86_64 GNU/Linux
pptpd v1.3.4 pppd version 2.4.4

client:
Linux skyshouter 2.6.32-3-686-bigmem #1 SMP Thu Feb 25 06:54:30 UTC
2010 i686 GNU/Linux
pppd version 2.4.5

thanks

On Sat, Apr 9, 2011 at 8:18 AM, Charlie Brady <[email protected]> wrote:
>
> On Fri, 8 Apr 2011, James Cameron wrote:
>
>> Benimaur Gao wrote:
>> > James wrote:
>> > >On the client system, check for iptables rules.
>> >
>> > On my client host, there are no iptables rules:
>>
>> There must be some other cause.
>>
>> > I want to check the GRE connection from the server to my client, but I
>> > dunno how to traceroute the GRE packets.
>>
>> Use "tcpdump proto gre" on both the client and the server during a
>> connection attempt.  Compare the two outputs.  If none of the GRE
>> packets sent by the server arrive at the client, then it is unlikely
>> that the client configuration is a cause.
>
> I notice something unusual in the server logs:
>
> http://sourceforge.net/mailarchive/forum.php?thread_name=20110407230946.GC6232%40us.netrek.org&forum_name=poptop-server
>
> Apr  7 18:50:04 skyxen pptpd[2781]: GRE: Bad checksum from pppd.
>
> Perhaps after that error your server is not sending GRE. I don't know, I'm
> not familiar with that error.
>
> What software (pptpd, pppd and kernel) are you running on your server and
> on your client?
>
> --
> Charlie
>
>

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