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L2TP Certificate & Android: No public key known

I'm really pulling at strings here to get Android working with this.

PPTP doesn't work, L2TP/IPSec doesn't work with PSK (Android wants to use CHAP, which Astaro doesn't support).

So I'm trying L2TP/IPSec with certificates, hoping maybe this will work better.

I'm all doing it in a virtual sort of enviroment, so there are no routers, firewalls, or NAT in the way.

2010:09:26-13:02:58 ASG8 pluto[10531]: | *received 352 bytes from 192.168.1.139:500 on eth1
2010:09:26-13:02:58 ASG8 pluto[10531]: packet from 192.168.1.139:500: received Vendor ID payload [RFC 3947]
2010:09:26-13:02:58 ASG8 pluto[10531]: packet from 192.168.1.139:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02]
2010:09:26-13:02:58 ASG8 pluto[10531]: packet from 192.168.1.139:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02_n]
2010:09:26-13:02:58 ASG8 pluto[10531]: packet from 192.168.1.139:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-00]
2010:09:26-13:02:58 ASG8 pluto[10531]: packet from 192.168.1.139:500: ignoring Vendor ID payload [FRAGMENTATION 80000000]
2010:09:26-13:02:58 ASG8 pluto[10531]: | preparse_isakmp_policy: peer requests PUBKEY authentication
2010:09:26-13:02:58 ASG8 pluto[10531]: | instantiated "D_Android" for 192.168.1.139
2010:09:26-13:02:58 ASG8 pluto[10531]: | creating state object #1 at 0x8e80c10
2010:09:26-13:02:58 ASG8 pluto[10531]: | ICOOKIE: 88 ed 8c 32 47 fc 41 cd
2010:09:26-13:02:58 ASG8 pluto[10531]: | RCOOKIE: a1 19 ff 94 1c 10 f6 c6
2010:09:26-13:02:58 ASG8 pluto[10531]: | peer: c0 a8 01 8b
2010:09:26-13:02:58 ASG8 pluto[10531]: | state hash entry 21
2010:09:26-13:02:58 ASG8 pluto[10531]: | inserting event EVENT_SO_DISCARD, timeout in 0 seconds for #1
2010:09:26-13:02:58 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: responding to Main Mode from unknown peer 192.168.1.139
2010:09:26-13:02:58 ASG8 pluto[10531]: | inserting event EVENT_RETRANSMIT, timeout in 10 seconds for #1
2010:09:26-13:02:58 ASG8 pluto[10531]: | next event EVENT_RETRANSMIT in 10 seconds for #1
2010:09:26-13:02:58 ASG8 pluto[10531]: |
2010:09:26-13:02:58 ASG8 pluto[10531]: | *received 228 bytes from 192.168.1.139:500 on eth1
2010:09:26-13:02:58 ASG8 pluto[10531]: | ICOOKIE: 88 ed 8c 32 47 fc 41 cd
2010:09:26-13:02:58 ASG8 pluto[10531]: | RCOOKIE: a1 19 ff 94 1c 10 f6 c6
2010:09:26-13:02:58 ASG8 pluto[10531]: | peer: c0 a8 01 8b
2010:09:26-13:02:58 ASG8 pluto[10531]: | state hash entry 21
2010:09:26-13:02:58 ASG8 pluto[10531]: | state object #1 found, in STATE_MAIN_R1
2010:09:26-13:02:58 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: NAT-Traversal: Result using RFC 3947: no NAT detected
2010:09:26-13:02:58 ASG8 pluto[10531]: | inserting event EVENT_NAT_T_KEEPALIVE, timeout in 60 seconds
2010:09:26-13:02:58 ASG8 pluto[10531]: | inserting event EVENT_RETRANSMIT, timeout in 10 seconds for #1
2010:09:26-13:02:58 ASG8 pluto[10531]: | next event EVENT_RETRANSMIT in 10 seconds for #1
2010:09:26-13:02:58 ASG8 pluto[10531]: |
2010:09:26-13:02:58 ASG8 pluto[10531]: | *received 988 bytes from 192.168.1.139:500 on eth1
2010:09:26-13:02:58 ASG8 pluto[10531]: | ICOOKIE: 88 ed 8c 32 47 fc 41 cd
2010:09:26-13:02:58 ASG8 pluto[10531]: | RCOOKIE: a1 19 ff 94 1c 10 f6 c6
2010:09:26-13:02:58 ASG8 pluto[10531]: | peer: c0 a8 01 8b
2010:09:26-13:02:58 ASG8 pluto[10531]: | state hash entry 21
2010:09:26-13:02:58 ASG8 pluto[10531]: | state object #1 found, in STATE_MAIN_R2
2010:09:26-13:02:58 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: Peer ID is ID_IPV4_ADDR: '192.168.1.139'
2010:09:26-13:02:58 ASG8 pluto[10531]: | subject: 'C=us, L=*****, O=*****, CN=*****'
2010:09:26-13:02:58 ASG8 pluto[10531]: | issuer: 'C=us, L=*****, O=*****, CN=***** VPN CA, E=*****@gmail.com'
2010:09:26-13:02:58 ASG8 pluto[10531]: | authkey: da:2b:a6[:D]4:af:44:2a:5b:9f:c8:4f:2a:8a:6b:fc:a3:a5:c2:90:eb
2010:09:26-13:02:58 ASG8 pluto[10531]: | certificate is valid
2010:09:26-13:02:58 ASG8 pluto[10531]: | issuer cacert found
2010:09:26-13:02:58 ASG8 pluto[10531]: | certificate signature is valid
2010:09:26-13:02:58 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: crl not found
2010:09:26-13:02:58 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: certificate status unknown
2010:09:26-13:02:58 ASG8 pluto[10531]: | subject: 'C=us, L=*****, O=*****, CN=***** VPN CA, E=*****@gmail.com'
2010:09:26-13:02:58 ASG8 pluto[10531]: | issuer: 'C=us, L=*****, O=*****, CN=***** VPN CA, E=*****@gmail.com'
2010:09:26-13:02:58 ASG8 pluto[10531]: | certificate is valid
2010:09:26-13:02:58 ASG8 pluto[10531]: | issuer cacert found
2010:09:26-13:02:58 ASG8 pluto[10531]: | certificate signature is valid
2010:09:26-13:02:58 ASG8 pluto[10531]: | reached self-signed root ca with a path length of 0
2010:09:26-13:02:58 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: no public key known for '192.168.1.139'
2010:09:26-13:02:58 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: sending encrypted notification INVALID_KEY_INFORMATION to 192.168.1.139:500
2010:09:26-13:02:58 ASG8 pluto[10531]: | state transition function for STATE_MAIN_R2 failed: INVALID_KEY_INFORMATION
2010:09:26-13:02:58 ASG8 pluto[10531]: | next event EVENT_RETRANSMIT in 10 seconds for #1

It does that a couple of times and then fails with this

2010:09:26-13:03:28 ASG8 pluto[10531]: | *time to handle event
2010:09:26-13:03:28 ASG8 pluto[10531]: | event after this is EVENT_NAT_T_KEEPALIVE in 30 seconds
2010:09:26-13:03:28 ASG8 pluto[10531]: | handling event EVENT_RETRANSMIT for 192.168.1.139 "D_Android" #1
2010:09:26-13:03:28 ASG8 pluto[10531]: | inserting event EVENT_RETRANSMIT, timeout in 40 seconds for #1
2010:09:26-13:03:28 ASG8 pluto[10531]: | next event EVENT_NAT_T_KEEPALIVE in 30 seconds
2010:09:26-13:03:28 ASG8 pluto[10531]: | rejected packet:
2010:09:26-13:03:28 ASG8 pluto[10531]: | 88 ed 8c 32 47 fc 41 cd a1 19 ff 94 1c 10 f6 c6
2010:09:26-13:03:28 ASG8 pluto[10531]: | 04 10 02 00 00 00 00 00 00 00 00 e4 0a 00 00 84
2010:09:26-13:03:28 ASG8 pluto[10531]: | 78 db 1c 97 a1 b4 58 2a 8d 9b 93 5e 22 41 2d 5c
2010:09:26-13:03:28 ASG8 pluto[10531]: | 8c 3d b0 ed 61 49 7f 6f ef 0b 4d 88 cc ed d2 ac
2010:09:26-13:03:28 ASG8 pluto[10531]: | 6f 8f 54 c7 b1 d7 3c 69 51 42 c7 86 3b 30 c5 5e
2010:09:26-13:03:28 ASG8 pluto[10531]: | 0b 1f eb e2 e8 db 26 a8 1f ee 5f da ec 3e bf ee
2010:09:26-13:03:28 ASG8 pluto[10531]: | 1d 91 22 d1 cf 20 e6 fb 21 dd 59 19 6b f0 89 ef
2010:09:26-13:03:28 ASG8 pluto[10531]: | b7 e5 4d 76 56 15 ac 5b 57 66 0d be 85 a9 f5 f7
2010:09:26-13:03:28 ASG8 pluto[10531]: | eb d6 87 57 08 eb a6 ed 63 86 b2 fd 36 12 fc 8c
2010:09:26-13:03:28 ASG8 pluto[10531]: | 79 22 43 32 8d e4 6c 37 e4 98 f1 82 25 53 e0 1a
2010:09:26-13:03:28 ASG8 pluto[10531]: | 14 00 00 14 9a e3 c8 30 b9 e5 ed 34 73 88 0a f8
2010:09:26-13:03:28 ASG8 pluto[10531]: | 1a 71 ca 54 14 00 00 18 dd ea 91 06 d4 4b 0c 70
2010:09:26-13:03:28 ASG8 pluto[10531]: | ea 6f 79 1d f1 35 66 5b 33 57 e1 d5 00 00 00 18
2010:09:26-13:03:28 ASG8 pluto[10531]: | c0 71 8e a8 ea 7f a9 48 2b d5 e4 07 a0 5b 3d 21
2010:09:26-13:03:28 ASG8 pluto[10531]: | de fa 90 5e
2010:09:26-13:03:28 ASG8 pluto[10531]: | control:
2010:09:26-13:03:28 ASG8 pluto[10531]: | 2c 00 00 00 00 00 00 00 0b 00 00 00 6f 00 00 00
2010:09:26-13:03:28 ASG8 pluto[10531]: | 02 03 03 00 00 00 00 00 00 00 00 00 02 00 00 00
2010:09:26-13:03:28 ASG8 pluto[10531]: | c0 a8 01 8b 00 00 00 00 00 00 00 00
2010:09:26-13:03:28 ASG8 pluto[10531]: | name:
2010:09:26-13:03:28 ASG8 pluto[10531]: | 02 00 01 f4 c0 a8 01 8b 00 00 00 00 00 00 00 00
2010:09:26-13:03:28 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: ERROR: asynchronous network error report on eth1 for message to 192.168.1.139 port 500, complainant 192.168.1.139: Connection refused [errno 111, origin ICMP type 3 code 3 (not authenticated)]
2010:09:26-13:03:28 ASG8 pluto[10531]: | next event EVENT_NAT_T_KEEPALIVE in 30 seconds
2010:09:26-13:03:58 ASG8 pluto[10531]: |
2010:09:26-13:03:58 ASG8 pluto[10531]: | *time to handle event
2010:09:26-13:03:58 ASG8 pluto[10531]: | event after this is EVENT_RETRANSMIT in 10 seconds
2010:09:26-13:03:58 ASG8 pluto[10531]: | next event EVENT_RETRANSMIT in 10 seconds for #1
2010:09:26-13:04:08 ASG8 pluto[10531]: |
2010:09:26-13:04:08 ASG8 pluto[10531]: | *time to handle event
2010:09:26-13:04:08 ASG8 pluto[10531]: | event after this is EVENT_REINIT_SECRET in 3515 seconds
2010:09:26-13:04:08 ASG8 pluto[10531]: | handling event EVENT_RETRANSMIT for 192.168.1.139 "D_Android" #1
2010:09:26-13:04:08 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139 #1: max number of retransmissions (2) reached STATE_MAIN_R2
2010:09:26-13:04:08 ASG8 pluto[10531]: | ICOOKIE: 88 ed 8c 32 47 fc 41 cd
2010:09:26-13:04:08 ASG8 pluto[10531]: | RCOOKIE: a1 19 ff 94 1c 10 f6 c6
2010:09:26-13:04:08 ASG8 pluto[10531]: | peer: c0 a8 01 8b
2010:09:26-13:04:08 ASG8 pluto[10531]: | state hash entry 21
2010:09:26-13:04:08 ASG8 pluto[10531]: "D_Android"[1] 192.168.1.139: deleting connection "D_Android" instance with peer 192.168.1.139 {isakmp=#0/ipsec=#0}

I have a remote access rule called Android, interface external (which is the 192.168.1.x network), TripleDES Policy, Local network is the virtual internal network (eth0), I have the user i'm trying to log on as set in the allowed users, and automatic packet filter rules checked.

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Parents

0 d12fk over 14 years ago
The ASG can only handle MD4 hashed passwords. CHAP uses MD5, so currently there is no chance for a tweak here. Instead, let's try what the Android does if the ASG refuses to do CHAP authentication. Maybe it proposes MS-CHAP-V2 as a last resort. Enable L2TP/PSK and add the line "require-mschap-v2" to the file /var/chroot-ipsec/etc/ppp/options. You need to be root to do that. While pppd is configured to "refuse-chap" and even "refuse-mschap" (v1) already, it still requests  after the Droid NAKed it's EAP proposal:

rcvd [LCP ConfNak id=0x1 ]
sent [LCP ConfReq id=0x2    ]
rcvd [LCP ConfAck id=0x2    ]

I'll have a look at the pppd code in the meantime.
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0 coreno over 14 years ago in reply to d12fk

You sir, are a genius! Android successfully connects! [:D]

Of course, this just turns up another hurdle.

It seems the phone isn't getting any DNS server information. I can ping and even browse to IP addresses on the internet, but using the hostname doesn't work.

I have the L2TP VPN Pool as an allowed network in the DNS config.
VPN Pool NAT'd to External in the NAT config.
I have the LT2P VPN Pool to Any network over Any protocol rule turned on in the Packet Filter.

Via the power of rooting my phone, I can run nslookup and see that the phone has no DNS server to lookup with. So it seems for some reason maybe Astaro isn't giving one. I'm doing to keep digging around though.

I really appreciate your help thus far.
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0 d12fk over 14 years ago in reply to coreno

You sir, are a genius! Android successfully connects! [:D]

Well, what can I say... =)

This will be fixed in 8.004 as well. ID #15234
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0 d12fk over 14 years ago in reply to coreno

You sir, are a genius! Android successfully connects! [:D]

Well, what can I say... =)

This will be fixed in 8.004 as well. ID #15234
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