9/7/2023 0 Comments Gns3 virtualbox setup![]() Converting to host machine tun/tap devices and GNS3 clouds frees up that memory for other purposes.ĭebian Linux Gateways also present additional security issues. These work well, but four of them use 640 - 768 MB memory, not insignificant, when (by comparison) a Linux VirtualBox Nagios, Icinga or Zabbix server requires only 512 MB memory. ![]() These Gateways require 160 - 192 MB memory each and each machines eth0 interface is VirtualBox bridged to the host machines wlan0 interface. Previous articles in this series have used Debian Linux VirtualBox Gateways to connect GNS3 networks to the host machine and Internet. Some variation of that command is required for masquerading.Ĭonfiguring OSPF Routing between the Host Machine and GNS3 Networks Post-up iptables-restore < /etc/iptables.up.rules The files /etc/iptables.up.rules generated by webmin is: Webmin's firewall module adds a line invoking the IPTables rules under the loopback device configuration: Recall also the tun/tap devices are configured in the rc.local file. The /etc/network/interfaces for the host laptop only configures a loopback device at boot time. This typically - but not always - applies the NAT. ![]() In the subsequent screen, select the Masquerade radio button and change the Outgoing Interface section from to Equals and select interface wlan0 as illustrated below. NAT is a Post Routing action, so click Add Rule under the Packets After Routing (POSTROUTING) section. In the upper left, select Network Address Translation (NAT) from the Showing IPTable pull-down menu. Under the host's Webmin interface, navigate to Networking and select Linux Firewall. For this example, the Webmin Firewall interface provides a graphical configuration tool to use the host wireless interface wlan0 for NAT masquerading. Once configured and executed, ifconfig will list devices tun0, tun1, tun2 and tun3.Ĭonfiguring Network Address Translation Masquerading on the Host Machine There are numerous articles describing Network Address Translation (NAT) masquerading available. The rc.local file is executed at boot time and configures persistent tun/tap interfaces. Sudo apt-get install uml-utilities bridge-utils ![]() Sudo setcap cap_net_raw,cap_net_admin+eip dynamips Creating Persistent tun/tap InterfacesĪdditional software is required to create the logical interfaces for cloud devices. Change to theĮxecutable's directory (/usr/local/bin) and run the following command: Have the correct permissions for tun/tap devices. You install dynamips from source on Ubuntu, the executable will not ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |