Category: Manuals

Seven Layers of the OSI Model

Seven Layers of the OSI Model

The Seven Layers of the OSI Model 7 Application Network Process to Application   Provides network services processes to application processes (such as electronic mail, file transfer,…) Provides user authentication         6 …
Linux, UNIX Directories

Linux, UNIX Directories

Linux directory structure Mount Point Explanation / Root directory /bin Main program /boot Used at boot /dev directory Where the registered user devices (modem, mouse, keyboard, etc.) /etc Configuration files /home Home directories of users, …
Transfer of static routes to DHCP

Transfer of static routes to DHCP

Write in the main section of the configuration file of DHCP server: option ms-classless-static-routes code 249 = array of unsigned integer 8; option rfc3442-classless-static-routes code 121 = array of unsigned integer 8; add this in …

IPv6 Configuration on Ubuntu Linux [HowTo]

We have Ubuntu 8.10 Intrepid Ibex Server Edition, coming out to the network via PPP and working with the intranet IP through NAT. Task: to give him a real, white IPv6-address, and make its IPv6-based …
IPv6 Configuration on FreeBSD

IPv6 Configuration on FreeBSD

So, it’s time to make the IPv4-IPv6 gateway, to walk in “another Internet”, to whom he will soon. GO and register at http://go6.net/4105/register.asp The kernel supports IPv6, ie it built with options INET6 (GENERIC kernel …

ipfw nat on FreeBSD 7

In the kernel configuration add: options IPFIREWALL # firewall options IPFIREWALL_VERBOSE # enable logging to syslogd (8) options IPFIREWALL_DEFAULT_TO_ACCEPT # allow everything by default options IPDIVERT options IPFIREWALL_FORWARD options DUMMYNET options IPFIREWALL_NAT # ipfw kernel …
Internet gateway on FreeBSD

Internet gateway on FreeBSD

Building a gateway to the global network on FreeBSD – this is one of the most frequent cases using this system. The main pluses of this decision are: stability, scalability, resistance to high loads and …