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meloss85
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Posts: 1
Joined: Fri May 31, 2019 9:38 pm

IPSec Disconnecting Frequently

Fri May 31, 2019 10:14 pm

Hello

I have internally in my network a RB435G

I also have a DIGI WR21 cellular modem with a public IP.

They Are currently connecting and disconnecting frequently and hoping someone could point me in the right direction.

Mikrotik Log
"may/27 19:46:21 ipsec respond new phase 1 negotiation: 172.20.22.1[500]<=>216.218.206.66[23544]
may/27 19:46:21 ipsec begin Identity Protection mode.
may/27 19:46:21 ipsec,error 216.218.206.66 failed to get valid proposal.
may/27 19:46:21 ipsec,error 216.218.206.66 failed to pre-process ph1 packet (side: 1, status 1).
may/27 19:46:21 ipsec,error 216.218.206.66 phase1 negotiation failed.
may/28 20:42:57 ipsec respond new phase 1 negotiation: 172.20.22.1[500]<=>216.218.206.118[28493]
may/28 20:42:57 ipsec begin Identity Protection mode.
may/28 20:42:57 ipsec,error 216.218.206.118 failed to get valid proposal.
may/28 20:42:57 ipsec,error 216.218.206.118 failed to pre-process ph1 packet (side: 1, status 1).
may/28 20:42:57 ipsec,error 216.218.206.118 phase1 negotiation failed.
may/29 01:31:42 ipsec respond new phase 1 negotiation: 172.20.22.1[500]<=>203.91.118.180[45285]
may/29 01:31:42 ipsec begin Identity Protection mode.
may/29 01:31:42 ipsec,error no suitable proposal found.
may/29 01:31:42 ipsec,error 203.91.118.180 failed to get valid proposal.
may/29 01:31:42 ipsec,error 203.91.118.180 failed to pre-process ph1 packet (side: 1, status 1).
may/29 01:31:42 ipsec,error 203.91.118.180 phase1 negotiation failed.
may/29 01:31:43 ipsec respond new phase 1 negotiation: 172.20.22.1[500]<=>203.91.118.180[45285]
may/29 01:31:43 ipsec begin Identity Protection mode.
may/29 01:31:43 ipsec,error no suitable proposal found.
may/29 01:31:43 ipsec,error 203.91.118.180 failed to get valid proposal.
may/29 01:31:43 ipsec,error 203.91.118.180 failed to pre-process ph1 packet (side: 1, status 1).
may/29 01:31:43 ipsec,error 203.91.118.180 phase1 negotiation failed.
may/29 01:31:45 ipsec respond new phase 1 negotiation: 172.20.22.1[500]<=>203.91.118.180[45285]
may/29 01:31:45 ipsec begin Identity Protection mode.
may/29 01:31:45 ipsec,error no suitable proposal found.
may/29 01:31:45 ipsec,error 203.91.118.180 failed to get valid proposal.
may/29 01:31:45 ipsec,error 203.91.118.180 failed to pre-process ph1 packet (side: 1, status 1).
may/29 01:31:45 ipsec,error 203.91.118.180 phase1 negotiation failed.
may/29 01:31:49 ipsec respond new phase 1 negotiation: 172.20.22.1[500]<=>203.91.118.180[45285]
may/29 01:31:49 ipsec begin Identity Protection mode.
may/29 01:31:49 ipsec,error no suitable proposal found.
may/29 01:31:49 ipsec,error 203.91.118.180 failed to get valid proposal.
may/29 01:31:49 ipsec,error 203.91.118.180 failed to pre-process ph1 packet (side: 1, status 1).
may/29 01:31:49 ipsec,error 203.91.118.180 phase1 negotiation failed.
may/29 19:29:53 ipsec respond new phase 1 negotiation: 172.20.22.1[500]<=>216.218.206.66[12012]
may/29 19:29:53 ipsec begin Identity Protection mode.
may/29 19:29:53 ipsec,error 216.218.206.66 failed to get valid proposal.
may/29 19:29:53 ipsec,error 216.218.206.66 failed to pre-process ph1 packet (side: 1, status 1).
may/29 19:29:53 ipsec,error 216.218.206.66 phase1 negotiation failed.
may/29 21:51:21 l2tp,ppp,info <l2tp-RWPHvpn>: terminating... - hungup
may/29 21:51:21 l2tp,ppp,info,account RWPHvpn logged out, 442111 195609341 179199540 4009941 3505908
may/29 21:51:21 l2tp,ppp,info <l2tp-RWPHvpn>: disconnected
may/29 21:51:28 l2tp,info first L2TP UDP packet received from 96.1.96.32
may/29 21:51:32 l2tp,ppp,info,account RWPHvpn logged in, 192.168.2.10
may/29 21:51:32 l2tp,ppp,info <l2tp-RWPHvpn>: authenticated
may/29 21:51:32 l2tp,ppp,info <l2tp-RWPHvpn>: connected
may/30 15:42:19 l2tp,ppp,info <l2tp-RWPHvpn>: terminating...
may/30 15:42:19 l2tp,ppp,info,account RWPHvpn logged out, 64246 28209158 25627498 579603 501615
may/30 15:42:19 l2tp,ppp,info <l2tp-RWPHvpn>: disconnected
may/30 15:43:42 l2tp,info first L2TP UDP packet received from 96.1.96.32
may/30 15:43:46 l2tp,ppp,info,account RWPHvpn logged in, 192.168.2.10
may/30 15:43:46 l2tp,ppp,info <l2tp-RWPHvpn>: authenticated
may/30 15:43:46 l2tp,ppp,info <l2tp-RWPHvpn>: connected
may/30 20:52:15 ipsec respond new phase 1 negotiation: 172.20.22.1[500]<=>216.218.206.102[17789]
may/30 20:52:15 ipsec begin Identity Protection mode.
may/30 20:52:15 ipsec,error 216.218.206.102 failed to get valid proposal.
may/30 20:52:15 ipsec,error 216.218.206.102 failed to pre-process ph1 packet (side: 1, status 1).
may/30 20:52:15 ipsec,error 216.218.206.102 phase1 negotiation failed. "

DIGI Log
“12:07:18, 03 Jun 2019,Static Route 2 Available,Activation
12:07:18, 03 Jun 2019,Static Route 1 Available,Activation
12:07:18, 03 Jun 2019,Static Route 0 Available,Activation
12:07:18, 03 Jun 2019,PPP 5 Available,Activation
12:07:18, 03 Jun 2019,PPP 5 up
12:07:18, 03 Jun 2019,PPP 5 Start IPCP
12:07:18, 03 Jun 2019,PPP 5 Start AUTHENTICATE
12:07:17, 03 Jun 2019,PPP 5 Start LCP
12:07:17, 03 Jun 2019,PPP 5 Start
12:07:17, 03 Jun 2019,L2TP Call 0 up
12:07:17, 03 Jun 2019,L2TP Tunnel 0 up
12:07:10, 03 Jun 2019,L2TP Tunnel 0 down
12:07:09, 03 Jun 2019,Static Route 2 Out Of Service,Activation
12:07:09, 03 Jun 2019,Static Route 1 Out Of Service,Activation
12:07:09, 03 Jun 2019,Static Route 0 Out Of Service,Activation
12:07:09, 03 Jun 2019,PPP 5 Out Of Service,Activation
12:07:09, 03 Jun 2019,PPP 5 down,LL disconnect
12:07:09, 03 Jun 2019,L2TP Call 0 down”

(I know time is different. They are pulled from logs on different days)

Anyone have any ideas why the connection keeps dropping?

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