Aquilenet » Services

# Configuration of a Libre Hosting

aka IPSec between OPNSense and OpenBSD

## Who we are

Aquilenet is a non profit organisation since 2010 and a "do it yourself ISP", member of a Federation of similar ISP in France called [FFDN](https://www.ffdn.org). We are netneutrality builders, helping for more freedom and building networks using and participating Libre Software.

We provide xDSL, VPN and we hope soon Fiber accesses, and a lot of services for our members (mail, nextcloud, hosting, VPS...) and for others [searx](https://searx.aquilenet.fr), [Etherpad](https://pad.aquilenet.fr), [Pastebin](https://pastebin.aquilenet.fr), [Peertube](https://tube.aquilenet.fr), ...

## The need: create a Libre format hosting in our cool local called "la mezzanine".

To allow to our the members of our non-profit organisation to put the hawdware they want (like Nuc, Raspberry pi, tower, etc...) in our Libre hosting space called "la mezzanine" with a Public IPv4 and IPv6 from our [ASN](https://en.wikipedia.org/wiki/Autonomous_system_(Internet)), we need to announce our IPs from another place than our Datacenter.

## How we do

We have to tunnel all the network from the Libre Hosting to Internet and vice versa. We have tried first with OpenVPN but the userland application use to much ressources for needed bandwidth (200Mbps).

This IP range will be routed by IPSec to our ASN point of BGP anounce in our datacenter, then they will route them to the Libre Hosting.

From our Libre Hosting we have a OPNSense Firewall and in our datacenter 2 clustered OpenBSD.

Check this logical graphic:

![](https://atelier.aquilenet.fr/attachments/download/541/Aquilenet-Free_Format_Hosting.png)

  - Cerbere1:

### OpenBSD configuration

We configure the OpenBSD's IPSec configuration file for 2 Phase 2 tunnels one for IPv4 another on for IPv6

/etc/ipsec.conf

~~~

ike passive esp from any to $LIBRE_HOSTING_PUB_IP_V4/26 \

    peer $OPSense_Public_IP\

    main group modp2048\

    psk "mysupersecurepass"

flow esp from any to $LIBRE_HOSTING_PUB_IP_V4/26 peer $OPSense_Public_IP

flow esp from any to $LIBRE_HOSTING_PUB_IP_V6/48 peer $OPSense_Public_IP

~~~

chmod 500 /etc/ipsec.conf

Launch the tunnel:

isakmpd -K  

ipsecctl -f /etc/ipsec.conf

make it permanent:

add this to /etc/rc.conf.local:

 isakmpd_flags="-K"

ipsec_rules=/etc/ipsec.conf

ipsec=YES

check the configuration

ipsecctl -sa  

sh -c "echo S \> /var/run/isakmpd.fifo"  

less /var/run/isakmpd.result

flux les règles ipsec:

ipsecctl -F

debug:

isakmpd -d -DA=70 -K

  - Conf Cerbere11

![](IPSec-Phase2_Conf1.png) ![](IPSec-Phase1_Conf1.png)

### \\-\> Configuration1: Performances

  - AES\_CBC\_256/HMAC\_SHA2\_512\_256/MODP\_8192

  - Cerbere11

last pid: 45038; load averages: 0.27, 0.34, 0.31 up 0+00:56:47 19:07:15  

49 processes: 1 running, 48 sleeping  

CPU 0: 3.9% user, 0.0% nice, 0.8% system, 3.1% interrupt, 92.1% idle  

CPU 1: 1.2% user, 0.0% nice, 0.0% system, 6.3% interrupt, 92.5% idle  

CPU 2: 0.4% user, 0.0% nice, 0.0% system, 21.3% interrupt, 78.3% idle  

CPU 3: 5.9% user, 0.0% nice, 0.0% system, 2.4% interrupt, 91.7% idle  

Mem: 109M Active, 145M Inact, 387M Wired, 152M Buf, 7214M Free

  - Cerbere1

load averages: 1.18, 0.95, 0.74 cerbere1.aquilenet.fr 19:08:23  

43 processes: 1 starting, 40 idle, 1 dead, 1 on processor up 3 days, 18:40 up 3 days, 19:21  

CPU0 states: 0.2% user, 0.0% nice, 2.8% system, 7.4% interrupt, 89.6% idle  

CPU1 states: 0.0% user, 0.0% nice, 22.4% system, 0.0% interrupt, 77.6% idle  

CPU2 states: 0.0% user, 0.0% nice, 20.2% system, 0.0% interrupt, 79.8% idle  

CPU3 states: 0.0% user, 0.0% nice, 10.8% system, 0.0% interrupt, 89.2% idle  

Memory: Real: 584M/2111M act/tot Free: 5793M Cache: 754M Swap: 0K/8405M

  - bande passante

![](IPSec_BW1.png)

### MTU

Linux: ping -M do -s 1172 185.233.102.130 =\> OK  

Linux: iperf3 -c 185.233.102.130 -M 1160 =\> OK  

Linux: ping -M do -s 1173 185.233.102.130 =\> NOK  

Linux: iperf3 -c 185.233.102.130 -M 1161 =\> NOK

  - netcat qui fait un echo  

    socat TCP4-LISTEN:4444,fork EXEC:cat