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Issue IKEV1 for Libreswan 3.27 : no connection has been authorized with policy PSK+IKEV1_ALLOW

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1

1

I'm trying to connect to a Cisco ASA 5520. I have been provided credentials :

Phase1
VPN IP address (Public IP) | XXX.XXX.XXX.XXX
Authentication Method | Pre-Shared Secret
Encryption Schema | IKE
Perfect Forward Secrecy- IKE | DH Group-2
Encryption Algorithm | 3DES
Hashing Algorithm | SHA-1
Renegotiate IKE SA every | 86400 Sec

Phase2
IPSec | ESP
Perfect Forward Secrecy-IPSEC | NO PFS
Encryption Algorithm IPSec | 3DES
Hashing Algorithm IPSec | SHA-1
Renegotiate IPSec SA every | 3600 Sec  
Private Network | 192.168.XXX.XXX/32

On my side, I compiled and installed Libreswan (3.27) on a DigitalOcean droplet, with the public IP : YYY.YYY.YYY.YYY and a private IP: 10.YYY.YYY.YYY/32. I tried to implement the IPSec VPN with this config:

conn the_vpn
 ike=3des-sha1;modp1024,aes128-sha1;modp1024
 auto=start
 authby=secret
 keyexchange=ike
 phase2=esp
 phase2alg=3des-sha1
 left=XXX.XXX.XXX.XXX
 leftsubnet=192.168.XXX.XXX/32
 right=YYY.YYY.YYY.YYY
 rightsubnet=10.YYY.YYY.YYY/32
 ikelifetime=3600
 type=tunnel
 ikev2=never

And I did allow udp on port 500 and 4500 in my server (Ubuntu 16.04). I also wrote down the secrekey in /etc/ipsec.secrets. But through the logs; it seems that the handshake is initialized by the CISCO, but my side has this error:

packet from XXX.XXX.XXX.XXX:500 : initial Main Mode message received on YYY.YYY.YYY.YYY:500 but no connection has been authorized with policy PSK+IKEV1_ALLOW

My question are these:

1) does Libreswan still allow IKEV1 with shared PSK and DH 2 group or it has been deprecated and removed ?

2) does my configurations reflect the other side ? Because, as usual, It's me who has to conform to their setup, they can't change anything.

Thank you.

vpn ipsec libreswan

share|improve this question

edited Apr 5 at 7:55

iMitwe

asked Apr 5 at 7:30

iMitweiMitwe

1064

New contributor

iMitwe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

1

1

I'm trying to connect to a Cisco ASA 5520. I have been provided credentials :

Phase1
VPN IP address (Public IP) | XXX.XXX.XXX.XXX
Authentication Method | Pre-Shared Secret
Encryption Schema | IKE
Perfect Forward Secrecy- IKE | DH Group-2
Encryption Algorithm | 3DES
Hashing Algorithm | SHA-1
Renegotiate IKE SA every | 86400 Sec

Phase2
IPSec | ESP
Perfect Forward Secrecy-IPSEC | NO PFS
Encryption Algorithm IPSec | 3DES
Hashing Algorithm IPSec | SHA-1
Renegotiate IPSec SA every | 3600 Sec  
Private Network | 192.168.XXX.XXX/32

On my side, I compiled and installed Libreswan (3.27) on a DigitalOcean droplet, with the public IP : YYY.YYY.YYY.YYY and a private IP: 10.YYY.YYY.YYY/32. I tried to implement the IPSec VPN with this config:

conn the_vpn
 ike=3des-sha1;modp1024,aes128-sha1;modp1024
 auto=start
 authby=secret
 keyexchange=ike
 phase2=esp
 phase2alg=3des-sha1
 left=XXX.XXX.XXX.XXX
 leftsubnet=192.168.XXX.XXX/32
 right=YYY.YYY.YYY.YYY
 rightsubnet=10.YYY.YYY.YYY/32
 ikelifetime=3600
 type=tunnel
 ikev2=never

And I did allow udp on port 500 and 4500 in my server (Ubuntu 16.04). I also wrote down the secrekey in /etc/ipsec.secrets. But through the logs; it seems that the handshake is initialized by the CISCO, but my side has this error:

packet from XXX.XXX.XXX.XXX:500 : initial Main Mode message received on YYY.YYY.YYY.YYY:500 but no connection has been authorized with policy PSK+IKEV1_ALLOW

My question are these:

1) does Libreswan still allow IKEV1 with shared PSK and DH 2 group or it has been deprecated and removed ?

2) does my configurations reflect the other side ? Because, as usual, It's me who has to conform to their setup, they can't change anything.

Thank you.

vpn ipsec libreswan

share|improve this question

edited Apr 5 at 7:55

iMitwe

asked Apr 5 at 7:30

iMitweiMitwe

1064

New contributor

iMitwe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I'm trying to connect to a Cisco ASA 5520. I have been provided credentials :

Phase1
VPN IP address (Public IP) | XXX.XXX.XXX.XXX
Authentication Method | Pre-Shared Secret
Encryption Schema | IKE
Perfect Forward Secrecy- IKE | DH Group-2
Encryption Algorithm | 3DES
Hashing Algorithm | SHA-1
Renegotiate IKE SA every | 86400 Sec

Phase2
IPSec | ESP
Perfect Forward Secrecy-IPSEC | NO PFS
Encryption Algorithm IPSec | 3DES
Hashing Algorithm IPSec | SHA-1
Renegotiate IPSec SA every | 3600 Sec  
Private Network | 192.168.XXX.XXX/32

On my side, I compiled and installed Libreswan (3.27) on a DigitalOcean droplet, with the public IP : YYY.YYY.YYY.YYY and a private IP: 10.YYY.YYY.YYY/32. I tried to implement the IPSec VPN with this config:

conn the_vpn
 ike=3des-sha1;modp1024,aes128-sha1;modp1024
 auto=start
 authby=secret
 keyexchange=ike
 phase2=esp
 phase2alg=3des-sha1
 left=XXX.XXX.XXX.XXX
 leftsubnet=192.168.XXX.XXX/32
 right=YYY.YYY.YYY.YYY
 rightsubnet=10.YYY.YYY.YYY/32
 ikelifetime=3600
 type=tunnel
 ikev2=never

And I did allow udp on port 500 and 4500 in my server (Ubuntu 16.04). I also wrote down the secrekey in /etc/ipsec.secrets. But through the logs; it seems that the handshake is initialized by the CISCO, but my side has this error:

packet from XXX.XXX.XXX.XXX:500 : initial Main Mode message received on YYY.YYY.YYY.YYY:500 but no connection has been authorized with policy PSK+IKEV1_ALLOW

My question are these:

1) does Libreswan still allow IKEV1 with shared PSK and DH 2 group or it has been deprecated and removed ?

2) does my configurations reflect the other side ? Because, as usual, It's me who has to conform to their setup, they can't change anything.

Thank you.

vpn ipsec libreswan

share|improve this question

edited Apr 5 at 7:55

iMitwe

asked Apr 5 at 7:30

iMitweiMitwe

1064

New contributor

iMitwe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

Phase1
VPN IP address (Public IP) | XXX.XXX.XXX.XXX
Authentication Method | Pre-Shared Secret
Encryption Schema | IKE
Perfect Forward Secrecy- IKE | DH Group-2
Encryption Algorithm | 3DES
Hashing Algorithm | SHA-1
Renegotiate IKE SA every | 86400 Sec

Phase2
IPSec | ESP
Perfect Forward Secrecy-IPSEC | NO PFS
Encryption Algorithm IPSec | 3DES
Hashing Algorithm IPSec | SHA-1
Renegotiate IPSec SA every | 3600 Sec  
Private Network | 192.168.XXX.XXX/32

conn the_vpn
 ike=3des-sha1;modp1024,aes128-sha1;modp1024
 auto=start
 authby=secret
 keyexchange=ike
 phase2=esp
 phase2alg=3des-sha1
 left=XXX.XXX.XXX.XXX
 leftsubnet=192.168.XXX.XXX/32
 right=YYY.YYY.YYY.YYY
 rightsubnet=10.YYY.YYY.YYY/32
 ikelifetime=3600
 type=tunnel
 ikev2=never

share|improve this question

edited Apr 5 at 7:55

iMitwe

asked Apr 5 at 7:30

iMitweiMitwe

1064

New contributor

iMitwe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited Apr 5 at 7:55

iMitwe

asked Apr 5 at 7:30

iMitweiMitwe

1064

New contributor

iMitwe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked Apr 5 at 7:30

iMitweiMitwe

1064

New contributor

iMitwe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked Apr 5 at 7:30

iMitweiMitwe

1064