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Dell laptop unsuccessful connecting to VPN on ERL

Back ground:
ERL configured for L2TP with Preshared key;

User account set on the ERL for user access;

 

Devices:

Set to use Microsoft VPN Client

Connect to IP; UserID/Pass and PreShared Key

Set security for CHaP etc

 

Many devices (MS Surface and other ) connect fine, but there are several DELL Laptops which do not.  They get an error on the UserID/Pass.  This occurs regardless of network.

 

2018-02-07 12_13_57-Mail - gene@ntg.co.png

 

Can sign in from another computer with the same configuration and UserID/Pass

 

Updated the Dell to the latest (Jan 2018) network drivers, but same error.

 

 

Is there another way to connect, without using openVPN?

 

Ubiquiti Employee
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Registered: ‎05-08-2017
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Solutions: 428

Re: Dell laptop unsuccessful connecting to VPN on ERL

Are you using CHAP or MS CHAP v2 on these clients?

Can you provivde the output of:

sudo swanctl --log

 

When one of the Dell clients tries to connect to the server?

 

Ben

 


 

Ben Pin | Ubiquiti Support

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Re: Dell laptop unsuccessful connecting to VPN on ERL

How long should it take to complete? I started just about 5 minutes after your reply and it is still yet to finish.
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Re: Dell laptop unsuccessful connecting to VPN on ERL

It is a live capture, if there is no output then the Dell VPN requests are not arriving on the server.

 

Ben

 


 

Ben Pin | Ubiquiti Support

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Re: Dell laptop unsuccessful connecting to VPN on ERL

Oh - well that explains it.

Currently the person with that laptop is in the office and on the internal network, so he is of course working. I will have to arrange time with him this evening to perform this.
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Re: Dell laptop unsuccessful connecting to VPN on ERL

sudo swanctl --log
06[NET] received packet: from XXX.xxx.170.174[500] to XXX.xxx.168.51[500] (408 bytes)
06[ENC] parsed ID_PROT request 0 [ SA V V V V V V V V ]
06[ENC] received unknown vendor ID: 01:52:8b:bb:c0:06:96:12:18:49:ab:9a:1c:5b:2a:51:00:00:00:01
06[IKE] received MS NT5 ISAKMPOAKLEY vendor ID
06[IKE] received NAT-T (RFC 3947) vendor ID
06[IKE] received draft-ietf-ipsec-nat-t-ike-02\n vendor ID
06[IKE] received FRAGMENTATION vendor ID
06[ENC] received unknown vendor ID: fb:1d:e3:cd:f3:41:b7:ea:16:b7:e5:be:08:55:f1:20
06[ENC] received unknown vendor ID: 26:24:4d:38:ed:db:61:b3:17:2a:36:e3:d0:cf:b8:19
06[ENC] received unknown vendor ID: e3:a5:96:6a:76:37:9f:e7:07:22:82:31:e5:ce:86:52
06[IKE] XXX.xxx.170.174 is initiating a Main Mode IKE_SA
06[ENC] generating ID_PROT response 0 [ SA V V V ]
06[NET] sending packet: from XXX.xxx.168.51[500] to XXX.xxx.170.174[500] (136 bytes)
01[NET] received packet: from XXX.xxx.170.174[500] to XXX.xxx.168.51[500] (228 bytes)
01[ENC] parsed ID_PROT request 0 [ KE No NAT-D NAT-D ]
01[IKE] remote host is behind NAT
01[ENC] generating ID_PROT response 0 [ KE No NAT-D NAT-D ]
01[NET] sending packet: from XXX.xxx.168.51[500] to XXX.xxx.170.174[500] (212 bytes)
06[NET] received packet: from XXX.xxx.170.174[4500] to XXX.xxx.168.51[4500] (76 bytes)
06[ENC] parsed ID_PROT request 0 [ ID HASH ]
06[CFG] looking for pre-shared key peer configs matching XXX.xxx.168.51...XXX.xxx.170.174[192.168.1.126]
06[CFG] selected peer config "remote-access"
06[IKE] IKE_SA remote-access[138] established between XXX.xxx.168.51[XXX.xxx.168.51]...XXX.xxx.170.174[192.168.1.126]
06[IKE] DPD not supported by peer, disabled
06[ENC] generating ID_PROT response 0 [ ID HASH ]
06[NET] sending packet: from XXX.xxx.168.51[4500] to XXX.xxx.170.174[4500] (76 bytes)
14[NET] received packet: from XXX.xxx.170.174[4500] to XXX.xxx.168.51[4500] (444 bytes)
14[ENC] parsed QUICK_MODE request 1 [ HASH SA No ID ID NAT-OA NAT-OA ]
14[IKE] received 3600s lifetime, configured 0s
14[IKE] received 250000000 lifebytes, configured 0
14[ENC] generating QUICK_MODE response 1 [ HASH SA No ID ID NAT-OA NAT-OA ]
14[NET] sending packet: from XXX.xxx.168.51[4500] to XXX.xxx.170.174[4500] (204 bytes)
04[NET] received packet: from XXX.xxx.170.174[4500] to XXX.xxx.168.51[4500] (60 bytes)
04[ENC] parsed QUICK_MODE request 1 [ HASH ]
04[IKE] CHILD_SA remote-access{70} established with SPIs c2ccf812_i 11967c60_o and TS XXX.xxx.168.51/32[udp/l2f] === XXX.xxx.170.174/32[udp/l2f]
05[NET] received packet: from XXX.xxx.170.174[4500] to XXX.xxx.168.51[4500] (76 bytes)
05[ENC] parsed INFORMATIONAL_V1 request 250882252 [ HASH D ]
05[IKE] received DELETE for ESP CHILD_SA with SPI 11967c60
05[IKE] closing CHILD_SA remote-access{70} with SPIs c2ccf812_i (0 bytes) 11967c60_o (784 bytes) and TS XXX.xxx.168.51/32[udp/l2f] === XXX.xxx.170.174/32[udp/l2f]
16[NET] received packet: from XXX.xxx.170.174[4500] to XXX.xxx.168.51[4500] (92 bytes)
16[ENC] parsed INFORMATIONAL_V1 request 4097481649 [ HASH D ]
16[IKE] received DELETE for IKE_SA remote-access[138]
16[IKE] deleting IKE_SA remote-access[138] between XXX.xxx.168.51[XXX.xxx.168.51]...XXX.xxx.170.174[192.168.1.126]
disconnecting...
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Re: Dell laptop unsuccessful connecting to VPN on ERL

Is this ER behind NAT by any chance?

 

There are no ppp messages in that output. Can you provide the configuration of the ER and the output of:

show log | match pppd

 

Ben

 


 

Ben Pin | Ubiquiti Support

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Posts: 17
Registered: ‎01-14-2016
Kudos: 2

Re: Dell laptop unsuccessful connecting to VPN on ERL

The ERL is the leading network device.

show log | match pppd
Feb 6 16:18:21 ubnt pppd[28518]: pppd 2.4.4 started by root, uid 0
Feb 6 16:18:21 ubnt pppd[28518]: Connect: ppp3 <-->
Feb 6 16:18:24 ubnt pppd[28518]: Unsupported protocol 'IPv6 Control Protovol' (0x8057) received
Feb 6 16:18:24 ubnt pppd[28518]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 6 16:18:24 ubnt pppd[28518]: local IP address 10.255.255.0
Feb 6 16:18:24 ubnt pppd[28518]: remote IP address 192.168.2.183
Feb 6 17:01:56 ubnt pppd[28518]: Connection terminated: no multilink.
Feb 6 17:01:56 ubnt pppd[28518]: Modem hangup
Feb 6 17:45:55 ubnt pppd[31132]: pppd 2.4.4 started by root, uid 0
Feb 6 17:45:55 ubnt pppd[31132]: Connect: ppp3 <-->
Feb 6 17:46:00 ubnt pppd[31132]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 6 17:46:00 ubnt pppd[31132]: local IP address 10.255.255.0
Feb 6 17:46:00 ubnt pppd[31132]: remote IP address 192.168.2.183
Feb 6 17:55:32 ubnt pppd[31132]: Connection terminated: no multilink.
Feb 6 17:55:32 ubnt pppd[31132]: Modem hangup
Feb 6 18:01:46 ubnt pppd[31757]: pppd 2.4.4 started by root, uid 0
Feb 6 18:01:46 ubnt pppd[31757]: Connect: ppp3 <-->
Feb 6 18:01:49 ubnt pppd[31757]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 6 18:01:49 ubnt pppd[31757]: local IP address 10.255.255.0
Feb 6 18:01:49 ubnt pppd[31757]: remote IP address 192.168.2.183
Feb 6 18:06:23 ubnt pppd[31757]: Connection terminated: no multilink.
Feb 6 18:06:23 ubnt pppd[31757]: Modem hangup
Feb 6 18:19:50 ubnt pppd[32446]: pppd 2.4.4 started by root, uid 0
Feb 6 18:19:50 ubnt pppd[32446]: Connect: ppp3 <-->
Feb 6 18:19:53 ubnt pppd[32446]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 6 18:19:54 ubnt pppd[32446]: local IP address 10.255.255.0
Feb 6 18:19:54 ubnt pppd[32446]: remote IP address 192.168.2.183
Feb 6 18:29:16 ubnt pppd[18970]: Connection terminated: no multilink.
Feb 6 18:33:27 ubnt pppd[32446]: Connection terminated: no multilink.
Feb 6 18:33:27 ubnt pppd[32446]: Modem hangup
Feb 6 19:09:24 ubnt pppd[20174]: Connection terminated: no multilink.
Feb 6 19:09:24 ubnt pppd[20174]: Modem hangup
Feb 6 20:43:05 ubnt pppd[4447]: pppd 2.4.4 started by root, uid 0
Feb 6 20:43:05 ubnt pppd[4447]: Connect: ppp1 <-->
Feb 6 20:43:07 ubnt pppd[4447]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 6 20:43:07 ubnt pppd[4447]: local IP address 10.255.255.0
Feb 6 20:43:07 ubnt pppd[4447]: remote IP address 192.168.2.181
Feb 6 21:12:35 ubnt pppd[28162]: Connection terminated: no multilink.
Feb 6 21:12:35 ubnt pppd[28162]: Modem hangup
Feb 6 21:32:47 ubnt pppd[5998]: pppd 2.4.4 started by root, uid 0
Feb 6 21:32:47 ubnt pppd[5998]: Connect: ppp0 <-->
Feb 6 21:32:49 ubnt pppd[5998]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 6 21:32:50 ubnt pppd[5998]: local IP address 10.255.255.0
Feb 6 21:32:50 ubnt pppd[5998]: remote IP address 192.168.2.180
Feb 6 22:46:53 ubnt pppd[4447]: Connection terminated: no multilink.
Feb 6 22:46:53 ubnt pppd[4447]: Modem hangup
Feb 6 23:00:33 ubnt pppd[5998]: Connection terminated: no multilink.
Feb 6 23:00:33 ubnt pppd[5998]: Modem hangup
Feb 7 03:33:30 ubnt pppd[16201]: pppd 2.4.4 started by root, uid 0
Feb 7 03:33:30 ubnt pppd[16201]: Connect: ppp0 <-->
Feb 7 03:33:30 ubnt pppd[16201]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 03:33:31 ubnt pppd[16201]: local IP address 10.255.255.0
Feb 7 03:33:31 ubnt pppd[16201]: remote IP address 192.168.2.180
Feb 7 03:44:07 ubnt pppd[16201]: Connection terminated: no multilink.
Feb 7 03:44:07 ubnt pppd[16201]: Modem hangup
Feb 7 07:27:59 ubnt pppd[23008]: pppd 2.4.4 started by root, uid 0
Feb 7 07:27:59 ubnt pppd[23008]: Connect: ppp0 <-->
Feb 7 07:28:11 ubnt pppd[23008]: local IP address 10.255.255.0
Feb 7 07:28:11 ubnt pppd[23008]: remote IP address 192.168.2.180
Feb 7 07:36:21 ubnt pppd[23008]: Connection terminated: no multilink.
Feb 7 07:36:21 ubnt pppd[23008]: Modem hangup
Feb 7 08:10:13 ubnt pppd[24366]: pppd 2.4.4 started by root, uid 0
Feb 7 08:10:13 ubnt pppd[24366]: Connect: ppp0 <-->
Feb 7 08:10:16 ubnt pppd[24366]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 08:10:17 ubnt pppd[24366]: local IP address 10.255.255.0
Feb 7 08:10:17 ubnt pppd[24366]: remote IP address 192.168.2.180
Feb 7 08:12:04 ubnt pppd[24366]: Connection terminated: no multilink.
Feb 7 08:12:04 ubnt pppd[24366]: Modem hangup
Feb 7 08:12:04 ubnt pppd[24588]: pppd 2.4.4 started by root, uid 0
Feb 7 08:12:04 ubnt pppd[24588]: Connect: ppp0 <-->
Feb 7 08:12:06 ubnt pppd[24588]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 08:12:07 ubnt pppd[24588]: local IP address 10.255.255.0
Feb 7 08:12:07 ubnt pppd[24588]: remote IP address 192.168.2.180
Feb 7 08:20:02 ubnt pppd[24979]: pppd 2.4.4 started by root, uid 0
Feb 7 08:20:02 ubnt pppd[24979]: Connect: ppp1 <-->
Feb 7 08:20:07 ubnt pppd[24979]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 08:20:08 ubnt pppd[24979]: local IP address 10.255.255.0
Feb 7 08:20:08 ubnt pppd[24979]: remote IP address 192.168.2.181
Feb 7 08:29:40 ubnt pppd[25391]: pppd 2.4.4 started by root, uid 0
Feb 7 08:29:40 ubnt pppd[25391]: Connect: ppp2 <-->
Feb 7 08:29:42 ubnt pppd[25391]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 08:29:43 ubnt pppd[25391]: local IP address 10.255.255.0
Feb 7 08:29:43 ubnt pppd[25391]: remote IP address 192.168.2.182
Feb 7 09:29:19 ubnt pppd[27195]: pppd 2.4.4 started by root, uid 0
Feb 7 09:29:19 ubnt pppd[27195]: Connect: ppp3 <-->
Feb 7 09:29:21 ubnt pppd[27195]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 09:29:22 ubnt pppd[27195]: local IP address 10.255.255.0
Feb 7 09:29:22 ubnt pppd[27195]: remote IP address 192.168.2.183
Feb 7 09:52:19 ubnt pppd[25391]: Connection terminated: no multilink.
Feb 7 09:52:19 ubnt pppd[25391]: Modem hangup
Feb 7 09:56:44 ubnt pppd[28134]: pppd 2.4.4 started by root, uid 0
Feb 7 09:56:44 ubnt pppd[28134]: Connect: ppp2 <-->
Feb 7 09:56:46 ubnt pppd[28134]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 09:56:49 ubnt pppd[28134]: local IP address 10.255.255.0
Feb 7 09:56:49 ubnt pppd[28134]: remote IP address 192.168.2.182
Feb 7 09:59:56 ubnt pppd[27195]: Connection terminated: no multilink.
Feb 7 09:59:56 ubnt pppd[27195]: Modem hangup
Feb 7 10:27:07 ubnt pppd[28134]: Connection terminated: no multilink.
Feb 7 10:27:07 ubnt pppd[28134]: Modem hangup
Feb 7 11:02:21 ubnt pppd[30196]: pppd 2.4.4 started by root, uid 0
Feb 7 11:02:21 ubnt pppd[30196]: Connect: ppp2 <-->
Feb 7 11:02:23 ubnt pppd[30196]: Unsupported protocol 'IPv6 Control Protovol' (0x8057) received
Feb 7 11:02:23 ubnt pppd[30196]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 11:02:24 ubnt pppd[30196]: local IP address 10.255.255.0
Feb 7 11:02:24 ubnt pppd[30196]: remote IP address 192.168.2.182
Feb 7 12:12:16 ubnt pppd[32277]: pppd 2.4.4 started by root, uid 0
Feb 7 12:12:16 ubnt pppd[32277]: Connect: ppp3 <-->
Feb 7 12:12:19 ubnt pppd[32277]: Unsupported protocol 'IPv6 Control Protovol' (0x8057) received
Feb 7 12:12:19 ubnt pppd[32277]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 12:12:20 ubnt pppd[32277]: local IP address 10.255.255.0
Feb 7 12:12:20 ubnt pppd[32277]: remote IP address 192.168.2.183
Feb 7 15:13:11 ubnt pppd[5217]: pppd 2.4.4 started by root, uid 0
Feb 7 15:13:11 ubnt pppd[5217]: Connect: ppp4 <-->
Feb 7 15:13:13 ubnt pppd[5217]: Unsupported protocol 'IPv6 Control Protovol' (0x8057) received
Feb 7 15:13:13 ubnt pppd[5217]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 15:13:14 ubnt pppd[5217]: local IP address 10.255.255.0
Feb 7 15:13:14 ubnt pppd[5217]: remote IP address 192.168.2.184
Feb 7 15:48:46 ubnt pppd[24588]: Connection terminated: no multilink.
Feb 7 15:49:14 ubnt pppd[32277]: Connection terminated: no multilink.
Feb 7 15:49:14 ubnt pppd[32277]: Modem hangup
Feb 7 18:39:00 ubnt pppd[30196]: Connection terminated: no multilink.
Feb 7 18:39:00 ubnt pppd[30196]: Modem hangup
Feb 7 18:46:19 ubnt pppd[11406]: pppd 2.4.4 started by root, uid 0
Feb 7 18:46:19 ubnt pppd[11406]: Connect: ppp0 <-->
Feb 7 18:46:24 ubnt pppd[11406]: Unsupported protocol 'IPv6 Control Protovol' (0x8057) received
Feb 7 18:46:24 ubnt pppd[11406]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 18:46:24 ubnt pppd[11406]: local IP address 10.255.255.0
Feb 7 18:46:24 ubnt pppd[11406]: remote IP address 192.168.2.180
Feb 7 20:31:42 ubnt pppd[24979]: Connection terminated: no multilink.
Feb 7 20:31:42 ubnt pppd[24979]: Modem hangup
Feb 7 20:41:01 ubnt pppd[11406]: Connection terminated: no multilink.
Feb 7 20:41:01 ubnt pppd[11406]: Modem hangup
Feb 7 20:41:15 ubnt pppd[14815]: pppd 2.4.4 started by root, uid 0
Feb 7 20:41:15 ubnt pppd[14815]: Connect: ppp0 <-->
Feb 7 20:41:17 ubnt pppd[14815]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 20:41:18 ubnt pppd[14815]: local IP address 10.255.255.0
Feb 7 20:41:18 ubnt pppd[14815]: remote IP address 192.168.2.180
Feb 7 21:10:16 ubnt pppd[5217]: Connection terminated: no multilink.
Feb 7 21:10:17 ubnt pppd[5217]: Modem hangup
Feb 7 22:31:27 ubnt pppd[18056]: pppd 2.4.4 started by root, uid 0
Feb 7 22:31:27 ubnt pppd[18056]: Connect: ppp1 <-->
Feb 7 22:31:31 ubnt pppd[18056]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 7 22:31:31 ubnt pppd[18056]: local IP address 10.255.255.0
Feb 7 22:31:31 ubnt pppd[18056]: remote IP address 192.168.2.181
Feb 7 22:37:29 ubnt pppd[18373]: pppd 2.4.4 started by root, uid 0
Feb 7 22:37:29 ubnt pppd[18373]: Connect: ppp2 <-->
Feb 7 22:37:32 ubnt pppd[18373]: No CHAP secret found for authenticating Domain\\User
Feb 7 22:37:32 ubnt pppd[18373]: Peer Domain\\User failed CHAP authentication
Feb 7 22:37:32 ubnt pppd[18373]: Connection terminated: no multilink.
Feb 7 22:37:56 ubnt pppd[18401]: pppd 2.4.4 started by root, uid 0
Feb 7 22:37:56 ubnt pppd[18401]: Connect: ppp2 <-->
Feb 7 22:37:58 ubnt pppd[18401]: No CHAP secret found for authenticating Domain\\User
Feb 7 22:37:58 ubnt pppd[18401]: Peer Domain\\User failed CHAP authentication
Feb 7 22:37:58 ubnt pppd[18401]: Connection terminated: no multilink.
Feb 7 22:38:04 ubnt pppd[18417]: pppd 2.4.4 started by root, uid 0
Feb 7 22:38:04 ubnt pppd[18417]: Connect: ppp2 <-->
Feb 7 22:38:06 ubnt pppd[18417]: No CHAP secret found for authenticating Domain\\User
Feb 7 22:38:06 ubnt pppd[18417]: Peer Domain\\User failed CHAP authentication
Feb 7 22:38:06 ubnt pppd[18417]: Connection terminated: no multilink.
Feb 7 22:39:25 ubnt pppd[18471]: pppd 2.4.4 started by root, uid 0
Feb 7 22:39:25 ubnt pppd[18471]: Connect: ppp2 <-->
Feb 7 22:39:27 ubnt pppd[18471]: No CHAP secret found for authenticating Domain\\User
Feb 7 22:39:27 ubnt pppd[18471]: Peer Domain\\User failed CHAP authentication
Feb 7 22:39:27 ubnt pppd[18471]: Connection terminated: no multilink.
Feb 7 23:04:15 ubnt pppd[18056]: Connection terminated: no multilink.
Feb 7 23:04:15 ubnt pppd[18056]: Modem hangup
Feb 8 00:17:02 ubnt pppd[14815]: Connection terminated: no multilink.
Feb 8 00:17:02 ubnt pppd[14815]: Modem hangup
Feb 8 08:25:39 ubnt pppd[2672]: pppd 2.4.4 started by root, uid 0
Feb 8 08:25:39 ubnt pppd[2672]: Connect: ppp0 <-->
Feb 8 08:25:41 ubnt pppd[2672]: Unsupported protocol 'IPv6 Control Protovol' (0x8057) received
Feb 8 08:25:41 ubnt pppd[2672]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 8 08:25:42 ubnt pppd[2672]: local IP address 10.255.255.0
Feb 8 08:25:42 ubnt pppd[2672]: remote IP address 192.168.2.180
Feb 8 08:44:17 ubnt pppd[2672]: Connection terminated: no multilink.
Feb 8 08:44:17 ubnt pppd[2672]: Modem hangup
Feb 8 09:11:39 ubnt pppd[4108]: pppd 2.4.4 started by root, uid 0
Feb 8 09:11:39 ubnt pppd[4108]: Connect: ppp0 <-->
Feb 8 09:11:41 ubnt pppd[4108]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 8 09:11:43 ubnt pppd[4108]: local IP address 10.255.255.0
Feb 8 09:11:43 ubnt pppd[4108]: remote IP address 192.168.2.180
Feb 8 09:33:22 ubnt pppd[4873]: pppd 2.4.4 started by root, uid 0
Feb 8 09:33:22 ubnt pppd[4873]: Connect: ppp1 <-->
Feb 8 09:33:24 ubnt pppd[4873]: Unsupported protocol 'IPv6 Control Protovol' (0x8057) received
Feb 8 09:33:24 ubnt pppd[4873]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 8 09:33:26 ubnt pppd[4873]: local IP address 10.255.255.0
Feb 8 09:33:26 ubnt pppd[4873]: remote IP address 192.168.2.181
Feb 8 10:35:26 ubnt pppd[4108]: Connection terminated: no multilink.
Feb 8 10:35:26 ubnt pppd[4108]: Modem hangup
Feb 8 10:43:48 ubnt pppd[7005]: pppd 2.4.4 started by root, uid 0
Feb 8 10:43:48 ubnt pppd[7005]: Connect: ppp0 <-->
Feb 8 10:43:50 ubnt pppd[7005]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 8 10:43:51 ubnt pppd[7005]: local IP address 10.255.255.0
Feb 8 10:43:51 ubnt pppd[7005]: remote IP address 192.168.2.180
Feb 8 12:34:23 ubnt pppd[4873]: Connection terminated: no multilink.
Feb 8 12:34:23 ubnt pppd[4873]: Modem hangup
Feb 8 13:51:51 ubnt pppd[7005]: Connection terminated: no multilink.
Feb 8 13:51:51 ubnt pppd[7005]: Modem hangup
Feb 8 13:53:56 ubnt pppd[12490]: pppd 2.4.4 started by root, uid 0
Feb 8 13:53:56 ubnt pppd[12490]: Connect: ppp0 <-->
Feb 8 13:53:59 ubnt pppd[12490]: Unsupported protocol 'Compression Control Protocol' (0x80fd) received
Feb 8 13:53:59 ubnt pppd[12490]: local IP address 10.255.255.0
Feb 8 13:53:59 ubnt pppd[12490]: remote IP address 192.168.2.180
New Member
Posts: 17
Registered: ‎01-14-2016
Kudos: 2

Re: Dell laptop unsuccessful connecting to VPN on ERL

Just wanted to follow up to see if there was any new insight on the issue, and how to facilitate a resolution.

Thank you.
Ubiquiti Employee
Posts: 3,050
Registered: ‎05-08-2017
Kudos: 542
Solutions: 428

Re: Dell laptop unsuccessful connecting to VPN on ERL

Are the users adding a domain prefix in front of their usernames?

 

 

b 7 22:37:32 ubnt pppd[18373]: No CHAP secret found for authenticating Domain\\User
Feb 7 22:37:32 ubnt pppd[18373]: Peer Domain\\User failed CHAP authentication
Feb 7 22:37:32 ubnt pppd[18373]: Connection terminated: no multilink.
Feb 7 22:37:56 ubnt pppd[18401]: pppd 2.4.4 started by root, uid 0

 

Can you provide a screenshot of the L2TP VPN settings (advanced options) and the security tab in the adapter settings, as well as the configuration of the EdgeRouter?

 

Ben

 


 

Ben Pin | Ubiquiti Support