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mikruser
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Cannot connect to L2TP server from Windows 7: no suitable proposal found

Thu Dec 27, 2018 10:50 am

Hello,

CCR1009, 6.43.8
cannot connect to L2TP server from Windows 7 and Windows 2008 R2.

ipsec, error no suitable proposal found.
ipsec, error x.x.x.x failed to get valid proposal.
ipsec, error x.x.x.x failed to pre-process ph1 packet (side: 1, status 1).
ipsec, error x.x.x.x phase1 negotiation failed.

I tried all the algorithms, but without success
Image_l2tp1.png
Image_l2tp2.png
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do not ask me why it is necessary.
 
szt
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Re: Cannot connect to L2TP server from Windows 7: no suitable proposal found  [SOLVED]

Thu Dec 27, 2018 10:56 am

please post the whole config here (by /export hide-sensitive command)
please enable ipsec debug blog (by /system logging add topics=ipsec) command

and in case there is NAT between server and client: google "AssumeUDPEncapsulationContextOnSendRule"
 
shiyiqiang08
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Re: Cannot connect to L2TP server from Windows 7: no suitable proposal found

Thu Dec 27, 2018 11:26 am

in l2tp server setting ,there has ipsec choice
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mikruser
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Re: Cannot connect to L2TP server from Windows 7: no suitable proposal found

Thu Dec 27, 2018 11:41 am

in case there is NAT between server and client: google "AssumeUDPEncapsulationContextOnSendRule"
Thanks, it helped!
do not ask me why it is necessary.

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