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Проблемы с подключением по LT2P/IPsec

The_Immortal
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The_Immortal

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Друзья, быть может, у кого-то была подобная проблема с подключением к VPN-серверу по протоколу LT2P/IPsec такого плана:

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[I] Sep 13 21:27:53 ndm: Network::Interface::Base: "L2TP0": interface is up.
[I] Sep 13 21:27:53 ndm: IpSec::Manager: service enabled.
[I] Sep 13 21:27:53 ndm: Network::Interface::PppTunnel: "L2TP0": interface state is changed, reconnecting.
[I] Sep 13 21:27:53 ndm: Network::Interface::PppTunnel: "L2TP0": remote endpoint is resolved to "102.*.*.*".
[I] Sep 13 21:27:53 ndm: Network::Interface::PppTunnel: "L2TP0": connecting via PPPoE0 (PPPoE0).
[I] Sep 13 21:27:53 ndm: Network::Interface::PppTunnel: "L2TP0": local endpoint is resolved to "92.*.*.*".
[I] Sep 13 21:27:53 ndm: IpSec::IpSecNetfilter: start reloading netfilter configuration...
[I] Sep 13 21:27:53 ndm: Network::Interface::PppTunnel: "L2TP0": added host route to 102.*.*.* via PPPoE0 (PPPoE0).
[I] Sep 13 21:27:53 ndm: Network::Interface::L2tp: "L2TP0": using port 41216 as local.
[I] Sep 13 21:27:53 ndm: Network::Interface::L2tp: "L2TP0": updating IP secure configuration.
[I] Sep 13 21:27:53 ndm: IpSec::Manager: "L2TP0": IP secure connection was added.
[I] Sep 13 21:27:53 ndm: IpSec::IpSecNetfilter: netfilter configuration reloading is done.
[I] Sep 13 21:27:55 ndm: IpSec::Manager: create IPsec reconfiguration transaction...
[I] Sep 13 21:27:55 ndm: IpSec::Manager: add config for crypto map "VPNL2TPServer".
[I] Sep 13 21:27:55 ndm: IpSec::Manager: add config for crypto map "L2TP0".
[I] Sep 13 21:27:55 ndm: IpSec::Manager: IPsec reconfiguration transaction was created.
[I] Sep 13 21:27:55 ndm: IpSec::Configurator: start applying IPsec configuration.
[I] Sep 13 21:27:55 ndm: IpSec::Configurator: IPsec configuration applying is done.
[I] Sep 13 21:27:55 ndm: IpSec::Configurator: start reloading IKE keys task.
[I] Sep 13 21:27:55 ipsec: 15[CFG] rereading secrets 
[I] Sep 13 21:27:55 ipsec: 15[CFG] loading secrets 
[I] Sep 13 21:27:55 ipsec: 15[CFG]   loaded IKE secret for %any 
[I] Sep 13 21:27:55 ipsec: 15[CFG]   loaded IKE secret for cmap:L2TP0 
[I] Sep 13 21:27:55 ipsec: 15[CFG] rereading ca certificates from '/tmp/ipsec/ipsec.d/cacerts' 
[I] Sep 13 21:27:55 ndm: IpSec::Configurator: reloading IKE keys task done.
[I] Sep 13 21:27:55 ipsec: 15[CFG] rereading aa certificates from '/tmp/ipsec/ipsec.d/aacerts' 
[I] Sep 13 21:27:55 ipsec: 15[CFG] rereading ocsp signer certificates from '/tmp/ipsec/ipsec.d/ocspcerts' 
[I] Sep 13 21:27:55 ipsec: 15[CFG] rereading attribute certificates from '/tmp/ipsec/ipsec.d/acerts' 
[I] Sep 13 21:27:55 ipsec: 15[CFG] rereading crls from '/tmp/ipsec/ipsec.d/crls' 
[I] Sep 13 21:27:56 ndm: IpSec::Configurator: start reloading IPsec config task.
[I] Sep 13 21:27:56 ipsec: 10[CFG] received stroke: delete connection 'VPNL2TPServer' 
[I] Sep 13 21:27:56 ipsec: 10[CFG] deleted connection 'VPNL2TPServer' 
[I] Sep 13 21:27:56 ipsec: 00[DMN] signal of type SIGHUP received. Reloading configuration 
[I] Sep 13 21:27:56 ipsec: 09[CFG] received stroke: add connection 'VPNL2TPServer' 
[I] Sep 13 21:27:56 ipsec: 00[CFG] loaded 0 entries for attr plugin configuration 
[I] Sep 13 21:27:56 ipsec: 09[CFG] added configuration 'VPNL2TPServer' 
[I] Sep 13 21:27:56 ipsec: 13[CFG] received stroke: add connection 'L2TP0' 
[I] Sep 13 21:27:56 ipsec: 13[CFG] added configuration 'L2TP0' 
[I] Sep 13 21:27:56 ndm: IpSec::IpSecNetfilter: start reloading netfilter configuration...
[I] Sep 13 21:27:56 ndm: IpSec::IpSecNetfilter: netfilter configuration reloading is done.
[I] Sep 13 21:27:56 ndm: IpSec::Configurator: reloading IPsec config task done.
[I] Sep 13 21:27:56 ipsec: 12[CFG] received stroke: initiate 'L2TP0' 
[I] Sep 13 21:27:56 ndm: IpSec::Configurator: "L2TP0": crypto map initialized.
[I] Sep 13 21:27:56 ipsec: 11[IKE] sending DPD vendor ID 
[I] Sep 13 21:27:56 ipsec: 11[IKE] sending FRAGMENTATION vendor ID 
[I] Sep 13 21:27:56 ipsec: 11[IKE] sending NAT-T (RFC 3947) vendor ID 
[I] Sep 13 21:27:56 ipsec: 11[IKE] sending draft-ietf-ipsec-nat-t-ike-02\n vendor ID 
[I] Sep 13 21:27:56 ipsec: 11[IKE] initiating Main Mode IKE_SA L2TP0[5] to 102.*.*.* 
[I] Sep 13 21:27:56 ipsec: 08[IKE] received NAT-T (RFC 3947) vendor ID 
[I] Sep 13 21:27:56 ipsec: 08[IKE] received DPD vendor ID 
[I] Sep 13 21:27:56 ipsec: 08[IKE] received FRAGMENTATION vendor ID 
[I] Sep 13 21:27:56 ipsec: 08[CFG] received proposals: IKE:AES_CBC=256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 
[I] Sep 13 21:27:56 ipsec: 08[CFG] configured proposals: IKE:AES_CBC=256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536, IKE:AES_CBC=256/HMAC_SHA1_96/PRF_HMAC_SHA1/ECP_384, IKE:AES_CBC=256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048, IKE:AES_CBC=256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024, IKE:AES_CBC=128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536, IKE:AES_CBC=128/HMAC_SHA1_96/PRF_HMAC_SHA1/ECP_256, IKE:AES_CBC=128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024, IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048, IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536, IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024 
[I] Sep 13 21:27:56 ipsec: 08[CFG] selected proposal: IKE:AES_CBC=256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 
[I] Sep 13 21:27:57 ipsec: 15[IKE] found linked key for crypto map 'L2TP0' 
[I] Sep 13 21:27:57 ipsec: 07[IKE] IKE_SA L2TP0[5] established between 92.*.*.*[92.*.*.*]...102.*.*.*[102.*.*.*] 
[I] Sep 13 21:27:57 ipsec: 07[IKE] scheduling reauthentication in 28772s 
[I] Sep 13 21:27:57 ipsec: 07[IKE] maximum IKE_SA lifetime 28792s 
[I] Sep 13 21:27:57 ndm: IpSec::Configurator: "L2TP0": crypto map active IKE SA: 1, active CHILD SA: 0.
[I] Sep 13 21:27:57 ipsec: 16[CFG] received proposals: ESP:AES_CBC=128/HMAC_SHA1_96/NO_EXT_SEQ 
[I] Sep 13 21:27:57 ipsec: 16[CFG] configured proposals: ESP:AES_CBC=128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:AES_CBC=256/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ 
[I] Sep 13 21:27:57 ipsec: 16[CFG] selected proposal: ESP:AES_CBC=128/HMAC_SHA1_96/NO_EXT_SEQ 
[I] Sep 13 21:27:57 ipsec: 16[IKE] CHILD_SA L2TP0{4} established with SPIs cb1a6567_i 05d20153_o and TS 92.*.*.*/32[udp/41216] === 102.*.*.*/32[udp/l2tp] 
[W] Sep 13 21:27:57 ndm: IpSec::Configurator: crypto map "L2TP0" is up.
[I] Sep 13 21:27:57 ndm: IpSec::Configurator: "L2TP0": crypto map active IKE SA: 1, active CHILD SA: 1.
[I] Sep 13 21:27:57 ndm: Network::Interface::L2tp: "L2TP0": IPsec layer is up, do start L2TP layer.
[I] Sep 13 21:27:57 ndm: Network::Interface::Ppp: "L2TP0": enabled connection via any interface.
[I] Sep 13 21:27:58 ndm: IpSec::IpSecNetfilter: start reloading netfilter configuration...
[I] Sep 13 21:27:58 ndm: IpSec::IpSecNetfilter: netfilter configuration reloading is done.
[I] Sep 13 21:27:59 l2tp[1423]: Plugin pppol2tp.so loaded.
[I] Sep 13 21:27:59 l2tp[1423]: pppd 2.4.4-4 started by root, uid 0
[I] Sep 13 21:27:59 ndm: Network::Interface::PppTunnel: "L2TP0": added host route to 102.*.*.* via PPPoE0 (PPPoE0).
[I] Sep 13 21:28:00 pppd_L2TP0: l2tp_control v2.02 
[I] Sep 13 21:28:00 pppd_L2TP0: remote host: 102.*.*.*:1701 
[I] Sep 13 21:28:00 pppd_L2TP0: local bind: 92.*.*.*:41216 
[I] Sep 13 21:28:02 pppd_L2TP0: l2tp: timeout of sccrp, retry sccrq, try: 1 
[I] Sep 13 21:28:04 pppd_L2TP0: l2tp: timeout of sccrp, retry sccrq, try: 2 
[I] Sep 13 21:28:06 pppd_L2TP0: l2tp: timeout of sccrp, retry sccrq, try: 3 
[I] Sep 13 21:28:08 pppd_L2TP0: l2tp: timeout of sccrp, retry sccrq, try: 4 
[I] Sep 13 21:28:10 pppd_L2TP0: l2tp: timeout of sccrp, retry sccrq, try: 5 
[I] Sep 13 21:28:10 pppd_L2TP0: l2tp: sccrq failed, fatal 
[I] Sep 13 21:28:10 pppd_L2TP0: l2tp: shutting down control connection 
[I] Sep 13 21:28:12 pppd_L2TP0: l2tp: shutdown completed 
[C] Sep 13 21:28:19 pppd_L2TP0: control init failed
[E] Sep 13 21:28:19 pppd_L2TP0: Couldn't get channel number: Bad file descriptor
[I] Sep 13 21:28:19 pppd_L2TP0: Exit.
[E] Sep 13 21:28:19 ndm: Service: "L2TP0": unexpectedly stopped.
 

VPN-сервер корпоративный, его детали неизвестны, но с Windows, и с Android подключение происходит без проблем, а вот роутер со стабильной KeeneticOS 3.4.12 не хочет...

Спасибо!

Edited by The_Immortal
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PASPARTU Honored Flooder

PASPARTU

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Posted
9 часов назад, The_Immortal сказал:

Подскажите, пожалуйста, каким образом сделать так, чтобы клиент при подключении на первой фазе не использовал 3des?

я так думаю run-conf отредактировать

но предварительно сделать бэкап

 

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The_Immortal Content Generator

The_Immortal

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2 часа назад, PASPARTU сказал:

я так думаю run-conf отредактировать

Дело в том, что там речь только про сервер: 

crypto ike proposal VPNL2TPServer
...
crypto ipsec transform-set VPNL2TPServer

 

Edited by The_Immortal
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The_Immortal Content Generator

The_Immortal

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Делаю так: 

(config)> crypto ike proposal VPNL2TPServer
(config-ike-proposal)> no encryption des
IpSec::Manager: "VPNL2TPServer": crypto ike proposal "VPNL2TPServer" encryption type successfully removed.
(config-ike-proposal)> no encryption 3des
IpSec::Manager: "VPNL2TPServer": crypto ike proposal "VPNL2TPServer" encryption type successfully removed.
(config-ike-proposal)> system reboot
Core::System::RebootManager: Rebooting the system.

В итоге в running-config по-прежнему наблюдаю: 

crypto ike proposal VPNL2TPServer
    encryption 3des
    encryption des
    encryption aes-cbc-128
    encryption aes-cbc-256
...

Что не так?

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r13 Honored Flooder

r13

Posted
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5 часов назад, The_Immortal сказал:

Делаю так: 


(config)> crypto ike proposal VPNL2TPServer
(config-ike-proposal)> no encryption des
IpSec::Manager: "VPNL2TPServer": crypto ike proposal "VPNL2TPServer" encryption type successfully removed.
(config-ike-proposal)> no encryption 3des
IpSec::Manager: "VPNL2TPServer": crypto ike proposal "VPNL2TPServer" encryption type successfully removed.
(config-ike-proposal)> system reboot
Core::System::RebootManager: Rebooting the system.

В итоге в running-config по-прежнему наблюдаю: 


crypto ike proposal VPNL2TPServer
    encryption 3des
    encryption des
    encryption aes-cbc-128
    encryption aes-cbc-256
...

Что не так?

system configuration save не хватает

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Werld Honored Flooder

Werld

Posted
Posted (edited)
В 15.09.2020 в 14:36, The_Immortal сказал:

Благодарю!

Однако в итоге не взлетело... Надо как-то у клиента вырубать 3des...

А если посмотреть в сторону команды interface ipsec encryption-level (см. в cli manual). Там есть разные предустановленные "уровни шифрования". Думаю, стоит попробовать что-то типа interface l2tp0 ipsec encryption-level strong   В наборе "strong"  только AES128 и AES256, 3DES отключен. Не уверен на 100%, что эти уровни применяются к созданным через веб l2tp/ipsec интерфейсам, но попробовать определенно стоит.
 

Edited by werldmgn
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