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opensslのアップグレード後、L2TP / IPSecが機能しなくなりました

MacBook/iOSデバイスからopenswan/xl2tpを備えたDebianサーバーへのVPN接続は、opensslのハートブリードのアナウンスにより、apt-getを使用してすべてをアップグレードするまでは問題なく機能していました。

これで、VPN接続はサーバーauth.logで次のように機能しなくなりました。

Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: received Vendor ID payload [RFC 3947] method set to=109
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike] method set to=110
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: ignoring unknown Vendor ID payload [8f8d83826d246b6fc7a8a6a428c11de8]
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: ignoring unknown Vendor ID payload [439b59f8ba676c4c7737ae22eab8f582]
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: ignoring unknown Vendor ID payload [4d1e0e136deafa34c4f3ea9f02ec7285]
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: ignoring unknown Vendor ID payload [80d0bb3def54565ee84645d4c85ce3ee]
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: ignoring unknown Vendor ID payload [9909b64eed937c6573de52ace952fa6b]
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike-03] meth=108, but already using method 110
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02] meth=107, but already using method 110
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02_n] meth=106, but already using method 110
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: ignoring Vendor ID payload [FRAGMENTATION 80000000]
Apr 11 10:32:50 linode pluto[7868]: packet from x.x.x.x:500: received Vendor ID payload [Dead Peer Detection]
Apr 11 10:32:50 linode pluto[7868]: "L2TP-PSK-NAT"[1] x.x.x.x #1: responding to Main Mode from unknown peer x.x.x.x
Apr 11 10:32:50 linode pluto[7868]: "L2TP-PSK-NAT"[1] x.x.x.x #1: transition from state STATE_MAIN_R0 to state STATE_MAIN_R1
Apr 11 10:32:50 linode pluto[7868]: "L2TP-PSK-NAT"[1] x.x.x.x #1: STATE_MAIN_R1: sent MR1, expecting MI2
Apr 11 10:32:50 linode pluto[7868]: "L2TP-PSK-NAT"[1] x.x.x.x #1: message ignored because it contains an unknown or unexpected payload type (ISAKMP_NEXT_SAK) at the outermost level
Apr 11 10:32:50 linode pluto[7868]: "L2TP-PSK-NAT"[1] x.x.x.x #1: sending notification INVALID_PAYLOAD_TYPE to x.x.x.x:500
Apr 11 10:32:53 linode pluto[7868]: "L2TP-PSK-NAT"[1] x.x.x.x #1: message ignored because it contains an unknown or unexpected payload type (ISAKMP_NEXT_SAK) at the outermost level
Apr 11 10:32:53 linode pluto[7868]: "L2TP-PSK-NAT"[1] x.x.x.x #1: sending notification INVALID_PAYLOAD_TYPE to x.x.x.x:500
Apr 11 10:32:56 linode pluto[7868]: "L2TP-PSK-NAT"[1] x.x.x.x #1: message ignored because it contains an unknown or unexpected payload type (ISAKMP_NEXT_SAK) at the outermost level

その後、接続が切断されます。

わずか10日前にログでこれを生成するために使用されたのと同じタイプの接続：

Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: responding to Main Mode from unknown peer y.y.y.y
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: transition from state STATE_MAIN_R0 to state STATE_MAIN_R1
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: STATE_MAIN_R1: sent MR1, expecting MI2
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: NAT-Traversal: Result using draft-ietf-ipsec-nat-t-ike (MacOS X): peer is NATed
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: transition from state STATE_MAIN_R1 to state STATE_MAIN_R2
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: STATE_MAIN_R2: sent MR2, expecting MI3
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: ignoring informational payload, type IPSEC_INITIAL_CONTACT msgid=00000000
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: Main mode peer ID is ID_IPV4_ADDR: '192.168.2.101'
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[37] y.y.y.y #43: switched from "L2TP-PSK-NAT" to "L2TP-PSK-NAT"
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[38] y.y.y.y #43: deleting connection "L2TP-PSK-NAT" instance with peer y.y.y.y {isakmp=#0/ipsec=#0}
Apr  1 04:16:04 linode pluto[3093]: "L2TP-PSK-NAT"[38] y.y.y.y #43: transition from state STATE_MAIN_R2 to state STATE_MAIN_R3

等.

私の質問は次のとおりです。

  1. INVALID_PAYLOAD_TYPEエラーの最も明白な意味は何ですか？
  2. Openswanをダウングレードする以外に、この問題を調査して修正するための最善のオプションは何ですか？
networkingdebianvpnipsecl2tp
5
Dennis Kreminsky

今日同じ問題が発生しましたが、openswanのdebianwheezyの最新のセキュリティアップデートが原因のようです。 dpkg -l | grep openswanを実行すると、1:2.6.37-3+deb7u1がインストールされていると思います。

IPad/iPhoneで再び動作させるには、サーバー上のopenswanをapt-get install openswan=1:2.6.37-3でダウングレードする必要があります。

もちろん、これは醜い回避策にすぎず、これが最新のopenswanまたはIOSのバグであるかどうかはわかりませんが、どちらかができるだけ早く修正されることを期待しましょう。

6
gucki