Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

changing to ikev2 breaks IPSEC tunnel

I have an IPSEC tunnel betwen two ERL both running 1.6 code.  When I enter the "set vpn ipsec ike-group FOO0 key-exchange ikev2"....the tunnel is gone.  Nothing happens when I enter "show vpn ipsec sa"

Deleting the command brings the tunnel back up.

Are there other setting I must do in order to use ikev2?

 

Here are the config sections of both routers.....

 

router 1

 

vpn {
ipsec {
auto-firewall-nat-exclude enable
esp-group FOO0 {
compression disable
lifetime 3600
mode tunnel
pfs enable
proposal 1 {
encryption aes256
hash sha1
}
}
ike-group FOO0 {
key-exchange ikev1
lifetime 28800
proposal 1 {
dh-group 21
encryption aes256
hash sha512
}
}
ipsec-interfaces {
interface eth1
}
nat-networks {
allowed-network 0.0.0.0/0 {
}
}
nat-traversal enable
site-to-site {
peer xx.xx.xx.xx {
authentication {
mode pre-shared-secret
pre-shared-secret blabla
}
connection-type initiate
ike-group FOO0
local-address any
tunnel 1 {
allow-nat-networks disable
allow-public-networks disable
esp-group FOO0
local {
prefix 192.168.10.0/24
}
remote {
prefix 172.21.0.0/16
}
}
}
}

 

 

Router 2

 

vpn {
ipsec {
auto-firewall-nat-exclude enable
esp-group FOO0 {
compression disable
lifetime 3600
mode tunnel
pfs enable
proposal 1 {
encryption aes256
hash sha1
}
}
esp-group FOO1 {
compression disable
lifetime 3600
mode tunnel
pfs enable
proposal 1 {
encryption aes256
hash sha1
}
}
esp-group FOO2 {
compression disable
lifetime 3600
mode tunnel
pfs enable
proposal 1 {
encryption aes256
hash sha1
}
}
ike-group FOO0 {
key-exchange ikev1
lifetime 28800
proposal 1 {
dh-group 14
encryption aes256
hash sha1
}
}
ike-group FOO1 {
key-exchange ikev1
lifetime 28800
proposal 1 {
dh-group 14
encryption aes256
hash sha1
}
}
ike-group FOO2 {
key-exchange ikev1
lifetime 28800
proposal 1 {
dh-group 21
encryption aes256
hash sha512
}
}
ipsec-interfaces {
interface eth1
}
nat-networks {
allowed-network 0.0.0.0/0 {
}
}
nat-traversal enable
site-to-site {
peer dd.dd.dd.dd {
authentication {
mode pre-shared-secret
pre-shared-secret shhhhhh
}
connection-type initiate
ike-group FOO0
local-address xx.xx.xx.xx
tunnel 1 {
allow-nat-networks disable
allow-public-networks disable
esp-group FOO0
local {
prefix 172.21.0.0/16
}
remote {
prefix 172.19.2.0/24
}
}
}
peer uu.uu.uu.uu {
authentication {
mode pre-shared-secret
pre-shared-secret shhhh
}
connection-type initiate
ike-group FOO1
local-address xx.xx.xx.xx
tunnel 1 {
allow-nat-networks disable
allow-public-networks disable
esp-group FOO1
local {
prefix 172.21.0.0/16
}
remote {
prefix 172.19.3.0/24
}
}
}
peer dnsnameofrouter1 {
authentication {
mode pre-shared-secret
pre-shared-secret blabla
}
connection-type initiate
ike-group FOO2
local-address xx.xx.xx.xx
tunnel 1 {
allow-nat-networks disable
allow-public-networks disable
esp-group FOO2
local {
prefix 172.21.0.0/16
}
remote {
prefix 192.168.10.0/24
}
}
}
}
}
}

Established Member
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Registered: ‎01-29-2014
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Solutions: 36

Re: changing to ikev2 breaks IPSEC tunnel

You would need to change to ikev2 on both ends... You did do that already, right?

Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel

Yep, both ends.  Neither side showed anything with the "show vpn ipsec sa"

 

Do I need to restart a service for it to take effect?

Established Member
Posts: 800
Registered: ‎01-29-2014
Kudos: 322
Solutions: 36

Re: changing to ikev2 breaks IPSEC tunnel

shouldn't need to.. but you can restart the vpn with the operational command:

restart vpn

 which may give it the little kick it is needing.  I would do that on both ends.

 

I haven't used ikev2 myself, so if that doesn't work, I will have to hand you back to the community in hope you get someone more knowledgeable Man Happy

 

Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel

This is what I did on both routers.....no joy!

 

 

Welcome to EdgeOS

By logging in, accessing, or using the Ubiquiti product, you
acknowledge that you have read and understood the Ubiquiti
License Agreement (available in the Web UI at, by default,
http://192.168.1.1) and agree to be bound by its terms.

Main login: ubnt
Password:
Last login: Fri Nov 28 02:12:26 CST 2014 on pts/0
Linux Main 3.10.20-UBNT #1 SMP Thu Oct 16 16:29:39 PDT 2014 mips64
Welcome to EdgeOS
ubnt@Main:~$ configure
[edit]
ubnt@Main# set vpn ipsec ike-group FOO0 key-exchange ikev2
[edit]
ubnt@Main# commit
[ vpn ]
conntrack v0.9.14 (conntrack-tools): connection tracking table has been emptied.

[edit]
ubnt@Main# exit
Warning: configuration changes have not been saved.
exit
ubnt@Main:~$ restart vpn
Clearing IPsec process...
ubnt@Main:~$ show vpn ipsec sa
ubnt@Main:~$

Emerging Member
Posts: 75
Registered: ‎10-16-2013
Kudos: 11
Solutions: 3

Re: changing to ikev2 breaks IPSEC tunnel

It's been discused somewhere in the beta forums before and is my experience too that IKEv2 tunnels don't show with these commands - maybe it'll be fixed with 1.7.

Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel

But after I enter the command on both routers, it does not pass traffic.....

Previous Employee
Posts: 10,504
Registered: ‎06-09-2011
Kudos: 3141
Solutions: 945
Contributions: 16

Re: changing to ikev2 breaks IPSEC tunnel

It's the show command that doesn't work.  The VyOS guys have a patch at - https://github.com/vyos/vyatta-op-vpn/pull/5.patch

 

I'm integrating this patch for the next release however this patch does not fix the "show vpn ike sa" command.

EdgeMAX Router Software Development
Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel

Understood.....no way to confirm if an ikev2 tunnel is up unless I install the patch.

 

Like a stated before, the tunnel does not pass traffic with ikev2.  Is there something elese that I must do?

Highlighted
Previous Employee
Posts: 10,504
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Contributions: 16

Re: changing to ikev2 breaks IPSEC tunnel

You can still see the raw output with "sudo ipsec statusall"

EdgeMAX Router Software Development
Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel

I will set ikev2 again tonight and run the "sudo ipsec statusall" to see what is happening.....hopfully it will shed some light on why its not working.

Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel

Ok.....entered the set commands for ikev2 and ran the "sudo ipsec statusall"

.......................................

Main login: ubnt
Password:
Last login: Sat Nov 29 21:04:45 CST 2014 on pts/0
Linux Main 3.10.20-UBNT #1 SMP Thu Oct 16 16:29:39 PDT 2014 mips64
Welcome to EdgeOS
ubnt@Main:~$ configure
[edit]
ubnt@Main# set vpn ipsec ike-group FOO0 key-exchange ikev2
[edit]
ubnt@Main# commit
[ vpn ]
conntrack v0.9.14 (conntrack-tools): connection tracking table has been emptied.

[edit]
ubnt@Main# sudo ipsec statusall
000 Status of IKEv1 pluto daemon (strongSwan 4.5.2):
000 interface lo/lo ::1:500
000 interface lo/lo 127.0.0.1:4500
000 interface lo/lo 127.0.0.1:500
000 interface eth0/eth0 192.168.10.1:4500
000 interface eth0/eth0 192.168.10.1:500
000 interface eth1/eth1 external add:4500
000 interface eth1/eth1 external add:500
000 interface eth2/eth2 192.168.2.1:4500
000 interface eth2/eth2 192.168.2.1:500
000 %myid = '%any'
000 loaded plugins: test-vectors curl ldap aes des sha1 sha2 md5 random x509 pkcs1
pgp dnskey pem openssl gmp hmac xauth attr kernel-netlink resolve
000 debug options: none
000
Status of IKEv2 charon daemon (strongSwan 4.5.2):
uptime: 44 hours, since Nov 29 20:54:59 2014
malloc: sbrk 242080, mmap 0, used 153808, free 88272
worker threads: 7 idle of 16, job queue load: 0, scheduled events: 5
loaded plugins: test-vectors curl ldap aes des sha1 sha2 md5 random x509 revocat
ion constraints pubkey pkcs1 pgp pem openssl fips-prf gmp agent pkcs11 xcbc hmac c
tr ccm gcm attr kernel-netlink resolve socket-raw farp stroke updown eap-identity
eap-aka eap-md5 eap-gtc eap-mschapv2 eap-radius eap-tls eap-ttls eap-tnc dhcp addr
block
Listening IP addresses:
192.168.10.1
external add
192.168.2.1
Connections:
peer-router2pubadd-tunnel-1: external add...router2pubadd
peer-router2pubadd-tunnel-1: local: [external add] uses pre-shared key authenti
cation
peer-router2pubadd-tunnel-1: remote: [router2pubadd] uses any authentication
peer-router2pubadd-tunnel-1: child: 192.168.10.0/24 === 172.21.0.0/16
Routed Connections:
peer-router2pubadd-tunnel-1{1}: ROUTED, TUNNEL
peer-router2pubadd-tunnel-1{1}: 192.168.10.0/24 === 172.21.0.0/16
Security Associations:
peer-router2pubadd-tunnel-1[3]: ESTABLISHED 82 seconds ago, external add[external add]...router2pubadd[router2pubadd]
peer-router2pubadd-tunnel-1[3]: IKE SPIs: e8acf356c5323bf6_i* 794481829b766029_r,
pre-shared key reauthentication in 7 hours
peer-router2pubadd-tunnel-1[3]: IKE proposal: AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SH
A1/ECP_521
[edit]
ubnt@Main#

Senior Member
Posts: 3,168
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Re: changing to ikev2 breaks IPSEC tunnel

Follow level development on this topic.

I have tried IKEv2 too on IPSec Site-to-Site tunnels (3 different tunnels) and ping/traceroute performed indicates traffic not getting through.
Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel

@stig I take it that something was broke in the final release of 1.6?  Will there be a pach for 1.6, a 1.6.1 release or will it have to wait till 1.7?

Previous Employee
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Registered: ‎06-09-2011
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Contributions: 16

Re: changing to ikev2 breaks IPSEC tunnel


@looney128 wrote:

@stig I take it that something was broke in the final release of 1.6?  Will there be a pach for 1.6, a 1.6.1 release or will it have to wait till 1.7?


@looney128 I'm not are aware of any ikev2 breakage before v1.6.0 final.  As mentioned the "show" commands don't correctly parse the "sudo ipsec statusall" output, but the tunnel works.  The only thing I haven't been able to work with ikev2 is vti.

EdgeMAX Router Software Development
Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel


@UBNT-stig wrote:

@looney128 wrote:

@stig I take it that something was broke in the final release of 1.6?  Will there be a pach for 1.6, a 1.6.1 release or will it have to wait till 1.7?


@looney128 I'm not are aware of any ikev2 breakage before v1.6.0 final.  As mentioned the "show" commands don't correctly parse the "sudo ipsec statusall" output, but the tunnel works.  The only thing I haven't been able to work with ikev2 is vti.


Well thats the thing.  Both @chaicka@chaicka and myself can not get a tunnel to pass traffic if ikev2 is enabled.  Either it is broke or we are not setting something that needs to be set.

Regular Member
Posts: 323
Registered: ‎08-10-2011
Kudos: 115
Solutions: 8

Re: changing to ikev2 breaks IPSEC tunnel

Well thats the thing.  Both @chaicka  and myself can not pass traffic over the tunnel if ikev2 is enabled.  Either something is broke or we are not setting someting that needs to be set.

Emerging Member
Posts: 75
Registered: ‎10-16-2013
Kudos: 11
Solutions: 3

Re: changing to ikev2 breaks IPSEC tunnel

[ Edited ]

I had IKEv2 working (with 1.6 beta and final) for GRE IPsec tunnels, but had troubles with disconnected tunnels after some time, so I switched back to IKEv1 and haven't noticed a problem since then.

But in general it did work, only without working "show vpn ike sa" and "show vpn ipsec sa" commands...

Previous Employee
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Contributions: 16

Re: changing to ikev2 breaks IPSEC tunnel

One thing I have noticed with ikev2 is that it doesn't seem to bring up the tunnel until data triggers it.  I've been talking with one of the VyOS developers who thinks he might have a patch for that.

EdgeMAX Router Software Development
Previous Employee
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Contributions: 16

Re: changing to ikev2 breaks IPSEC tunnel

Attached are my sample ikev2 config files and a deb file that has the patch for parse the show commands. 

 

After boot I see:

 

ubnt@R1:~$ show vpn ike sa
Peer ID / IP                            Local ID / IP               
------------                            -------------
30.0.0.2                                20.0.0.2                               

    State  Encrypt  Hash    D-H Grp  NAT-T  A-Time  L-Time
    -----  -------  ----    -------  -----  ------  ------
    up     aes128   sha1_96 PRF_HMAC_SHA1/MODP_2048 no     3600    28800  

 
ubnt@R1:~$ show vpn ipsec sa
Peer ID / IP                            Local ID / IP               
------------                            -------------
30.0.0.2                                20.0.0.2                               

    Tunnel  State  Bytes Out/In   Encrypt  Hash  NAT-T  A-Time  L-Time  Proto
    ------  -----  -------------  -------  ----  -----  ------  ------  -----
    1       down   n/a            n/a      n/a   no     0       3600    all

 

As I mentioned it seems like phase1 comes up, but requires data to bring up the tunnel.  So if I ping with the -I option with the LAN network:

 

ubnt@R1:~$ /bin/ping -I eth1 172.16.1.1
PING 172.16.1.1 (172.16.1.1) from 20.0.0.2 eth1: 56(84) bytes of data.
64 bytes from 172.16.1.1: icmp_req=2 ttl=64 time=1.21 ms
64 bytes from 172.16.1.1: icmp_req=3 ttl=64 time=0.744 ms
64 bytes from 172.16.1.1: icmp_req=4 ttl=64 time=0.743 ms
^C
--- 172.16.1.1 ping statistics ---
4 packets transmitted, 3 received, 25% packet loss, time 3011ms
rtt min/avg/max/mdev = 0.743/0.900/1.214/0.223 ms

ubnt@R1:~$ show vpn ipsec sa
Peer ID / IP                            Local ID / IP               
------------                            -------------
30.0.0.2                                20.0.0.2                               

    Tunnel  State  Bytes Out/In   Encrypt  Hash  NAT-T  A-Time  L-Time  Proto
    ------  -----  -------------  -------  ----  -----  ------  ------  -----
    1       up     252.0/252.0    aes128   sha1_96 no     660     3600    all

 

Config for R1

 

ubnt@R1:~$ cat /config/config.boot
firewall {
    name WAN_IN {
        default-action drop
        description "WAN to internal"
        enable-default-log
        rule 10 {
            action accept
            description "Allow established/related"
            state {
                established enable
                related enable
            }
        }
        rule 20 {
            action drop
            description "Drop invalid state"
            state {
                invalid enable
            }
        }
    }
    name WAN_LOCAL {
        default-action drop
        description "WAN to router"
        enable-default-log
        rule 10 {
            action accept
            description "Allow established/related"
            state {
                established enable
                related enable
            }
        }
        rule 20 {
            action drop
            description "Drop invalid state"
            state {
                invalid enable
            }
        }
        rule 30 {
            action accept
            description "Allow ping"
            protocol icmp
        }
    }
}
interfaces {
    ethernet eth0 {
        address 20.0.0.2/30
        description Internet
        firewall {
            in {
                name WAN_IN
            }
            local {
                name WAN_LOCAL
            }
        }
    }
    ethernet eth1 {
        address 192.168.1.1/24
        description LAN-1
    }
    ethernet eth2 {
        address 192.168.2.1/24
        description LAN-2
    }
}
service {
    dhcp-server {
        disabled false
        hostfile-update disable
        shared-network-name LAN1 {
            authoritative enable
            subnet 192.168.1.0/24 {
                default-router 192.168.1.1
                dns-server 8.8.8.8
                lease 86400
                start 192.168.1.38 {
                    stop 192.168.1.243
                }
            }
        }
        shared-network-name LAN2 {
            authoritative enable
            subnet 192.168.2.0/24 {
                default-router 192.168.2.1
                dns-server 8.8.8.8
                lease 86400
                start 192.168.2.38 {
                    stop 192.168.2.243
                }
            }
        }
    }
    gui {
        https-port 443
    }
    nat {
        rule 5010 {
            outbound-interface eth0
            type masquerade
        }
    }
    ssh {
        port 22
        protocol-version v2
    }
}
system {
    gateway-address 20.0.0.1
    host-name R1
    login {
        user ubnt {
            authentication {
                encrypted-password $1$zKNoUbAo$gomzUbYvgyUMcD436Wo66.
            }
            level admin
        }
    }
    name-server 8.8.8.8
    ntp {
        server 0.ubnt.pool.ntp.org {
        }
        server 1.ubnt.pool.ntp.org {
        }
        server 2.ubnt.pool.ntp.org {
        }
        server 3.ubnt.pool.ntp.org {
        }
    }
    offload {
        ipsec enable
        ipv4 {
            forwarding enable
        }
    }
    syslog {
        global {
            facility all {
                level notice
            }
            facility protocols {
                level debug
            }
        }
    }
    time-zone UTC
}
vpn {
    ipsec {
        auto-firewall-nat-exclude enable
        esp-group FOO0 {
            proposal 1 {
                encryption aes128
                hash sha1
            }
        }
        ike-group FOO0 {
            key-exchange ikev2
            proposal 1 {
                dh-group 14
                encryption aes128
                hash sha1
            }
        }
        ipsec-interfaces {
            interface eth0
        }
        nat-networks {
            allowed-network 0.0.0.0/0 {
            }
        }
        nat-traversal enable
        site-to-site {
            peer 30.0.0.2 {
                authentication {
                    mode pre-shared-secret
                    pre-shared-secret secret
                }
                connection-type initiate
                ike-group FOO0
                local-address 20.0.0.2
                tunnel 1 {
                    esp-group FOO0
                    local {
                        prefix 192.168.1.0/24
                    }
                    remote {
                        prefix 172.16.1.0/24
                    }
                }
            }
        }
    }
}


/* Warning: Do not remove the following line. */
/* === vyatta-config-version: "config-management@1:conntrack@1:cron@1:dhcp-relay@1:dhcp-server@4:firewall@5:ipsec@4:nat@3:qos@1:quagga@2:system@4:ubnt-pptp@1:ubnt-util@1:vrrp@1:webgui@1:webproxy@1:zone-policy@1" === */
/* Release version: v1.6.0.4716006.141031.1731 */

 

Config for R2

 

ubnt@R2:~$ cat /config/config.boot
firewall {
    name WAN_IN {
        default-action drop
        description "WAN to internal"
        enable-default-log
        rule 10 {
            action accept
            description "Allow established/related"
            state {
                established enable
                related enable
            }
        }
        rule 20 {
            action drop
            description "Drop invalid state"
            state {
                invalid enable
            }
        }
    }
    name WAN_LOCAL {
        default-action drop
        description "WAN to router"
        enable-default-log
        rule 10 {
            action accept
            description "Allow established/related"
            state {
                established enable
                related enable
            }
        }
        rule 20 {
            action drop
            description "Drop invalid state"
            state {
                invalid enable
            }
        }
        rule 30 {
            action accept
            description "Allow ping"
            protocol icmp
        }
    }
}
interfaces {
    ethernet eth0 {
        address 30.0.0.2/30
        description Internet
        firewall {
            in {
                name WAN_IN
            }
            local {
                name WAN_LOCAL
            }
        }
    }
    ethernet eth1 {
        address 172.16.1.1/24
        description LAN-1
    }
    ethernet eth2 {
        address 172.16.2.1/24
        description LAN-2
    }
}
service {
    dhcp-server {
        disabled false
        hostfile-update disable
        shared-network-name LAN1 {
            authoritative enable
            subnet 172.16.1.0/24 {
                default-router 172.16.1.1
                dns-server 8.8.8.8
                lease 86400
                start 172.16.1.38 {
                    stop 172.16.1.243
                }
            }
        }
        shared-network-name LAN2 {
            authoritative enable
            subnet 172.16.2.0/24 {
                default-router 172.16.2.1
                dns-server 8.8.8.8
                lease 86400
                start 172.16.2.38 {
                    stop 172.16.2.243
                }
            }
        }
    }
    gui {
        https-port 443
    }
    nat {
        rule 5010 {
            outbound-interface eth0
            type masquerade
        }
    }
    ssh {
        port 22
        protocol-version v2
    }
}
system {
    gateway-address 30.0.0.1
    host-name R2
    login {
        user ubnt {
            authentication {
                encrypted-password $1$zKNoUbAo$gomzUbYvgyUMcD436Wo66.
            }
            level admin
        }
    }
    name-server 8.8.8.8
    ntp {
        server 0.ubnt.pool.ntp.org {
        }
        server 1.ubnt.pool.ntp.org {
        }
        server 2.ubnt.pool.ntp.org {
        }
        server 3.ubnt.pool.ntp.org {
        }
    }
    offload {
        ipsec enable
        ipv4 {
            forwarding enable
        }
    }
    syslog {
        global {
            facility all {
                level notice
            }
            facility protocols {
                level debug
            }
        }
    }
    time-zone UTC
}
vpn {
    ipsec {
        auto-firewall-nat-exclude enable
        esp-group FOO0 {
            proposal 1 {
                encryption aes128
                hash sha1
            }
        }
        ike-group FOO0 {
            key-exchange ikev2
            proposal 1 {
                dh-group 14
                encryption aes128
                hash sha1
            }
        }
        ipsec-interfaces {
            interface eth0
        }
        nat-networks {
            allowed-network 0.0.0.0/0 {
            }
        }
        nat-traversal enable
        site-to-site {
            peer 20.0.0.2 {
                authentication {
                    mode pre-shared-secret
                    pre-shared-secret secret
                }
                connection-type initiate
                ike-group FOO0
                local-address 30.0.0.2
                tunnel 1 {
                    esp-group FOO0
                    local {
                        prefix 172.16.1.0/24
                    }
                    remote {
                        prefix 192.168.1.0/24
                    }
                }
            }
        }
    }
}


/* Warning: Do not remove the following line. */
/* === vyatta-config-version: "config-management@1:conntrack@1:cron@1:dhcp-relay@1:dhcp-server@4:firewall@5:ipsec@4:nat@3:qos@1:quagga@2:system@4:ubnt-pptp@1:ubnt-util@1:vrrp@1:webgui@1:webproxy@1:zone-policy@1" === */
/* Release version: v1.6.0.4716006.141031.1731 */

 

EdgeMAX Router Software Development
Attachment