Virtual vpn in the cloud

Port 4500
for enabling the VM to listen to IKE messages 
Port 5001
is to enable iperf, network-testing tool, to send and acknowledge TCP and UDP 
packets. 
Completion of the above steps launches the Virtual Machine accessible through SSH via port 
22. 
For instance through SSH, 
ssh –i keypair.pem root@ 
Enterprises benefit from VPN in reducing the cost, increasing the stability, and increasing 
the productivity, without impairing the security [51]. 
 

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46 
A
PPENDIX 
E 
OPENSTACK CLIs CUSTOMIZATION SCRIPTS 
 
Customization Script for Launching VM with one NIC 
#cloud-config 
# 
# This script automatically permorm some needed actions for the VM configuration 
# You can modify it, but be careful not to change network configuration. 
write_files:
- encoding: b64 
content: | 
YXV0byBsbyAKaWZhY2UgbG8gaW5ldCBsb29wYmFjawogYXV0byBldGgwIAogaWZh
Y2UgZXRoMCAgaW5ldCBkaGNwCg== 
path: /etc/network/interfaces 
- content: | 
DEVICE="eth0" 
NM_CONTROLLED="yes" 
ONBOOT="yes" 
BOOTPROTO="dhcp" 
TYPE="Ethernet" 
path: /etc/sysconfig/network-scripts/ifcfg-eth0 
permissions: '460' 
bootcmd:
- ifdown eth0 
- ifup eth0 
# Start DEM monitoring 
runcmd: 
- curl -L -s -k https://xifisvn.esl.eng.it/wp3/software/DEM_Adapter/install.sh | bash 
# FIWARE Support 
fiware-support: 
sshkey: 
gpgkey: | 
-----BEGIN PGP PUBLIC KEY BLOCK----- 
Version: GnuPG v1 
 
-----END PGP PUBLIC KEY BLOCK----- 
Customization Script for Launching VM with two NICs 
#cloud-config 
# 
# This script automatically permorm some needed actions for the VM configuration 

---

47 
# You can modify it, but be careful not to change network configuration. 
write_files:
- encoding: b64 
content: | 
YXV0byBsbyAKaWZhY2UgbG8gaW5ldCBsb29wYmFjawogYXV0byBldGgwIAogaWZh
Y2UgZXRoMCAgaW5ldCBkaGNwCiBhdXRvIGV0aDEgCiBpZmFjZSBldGgxICBpbmV0
IGRoY3AK 
path: /etc/network/interfaces 
- content: | 
DEVICE="eth0" 
NM_CONTROLLED="yes" 
ONBOOT="yes" 
BOOTPROTO="dhcp" 
TYPE="Ethernet" 
path: /etc/sysconfig/network-scripts/ifcfg-eth0 
permissions: '460' 
- content: | 
DEVICE="eth1" 
NM_CONTROLLED="yes" 
ONBOOT="yes" 
BOOTPROTO="dhcp" 
TYPE="Ethernet" 
path: /etc/sysconfig/network-scripts/ifcfg-eth1 
permissions: '460' 
bootcmd:
- ifdown eth0 
- ifup eth0 
- ifdown eth1 
- ifup eth1 
# Start DEM monitoring 
runcmd: 
- curl -L -s -k https://xifisvn.esl.eng.it/wp3/software/DEM_Adapter/install.sh | bash 
# FIWARE Support 
fiware-support: 
sshkey:  
gpgkey: | 
-----BEGIN PGP PUBLIC KEY BLOCK----- 
Version: GnuPG v1 
 
-----END PGP PUBLIC KEY BLOCK-----