EtherApe is a GNOME/pcap-based etherman, interman, and "tcpman" clone. It displays network activity graphically. Active hosts are shown as circles of varying size, and traffic among them is shown as lines of varying width. It supports Ethernet, FDDI, Token Ring, ISDN, PPP, WLAN, and SLIP transports. It knows about VLANs, IP, IPv6, TCP, UDP, FTP, and a number of other protocols. Additional statistics windows will let you concentrate on protocols or nodes.
Ethernet Frame Diverter is mainly used for setting up a bridge with Squid running on it and transparently caching the Web traffic between the LAN and the router. "Transparent" means that no reconfiguration of the router or the clients is required. It also means that, in case of trouble, the machine can be replaced by a simple crossover RJ45 patch cord.
Ettercap is a network sniffer/interceptor/logger for ethernet LANs. It supports active and passive dissection of many protocols (even ciphered ones, like SSH and HTTPS). Data injection in an established connection and filtering on the fly is also possible, keeping the connection synchronized. Many sniffing modes were implemented to give you a powerful and complete sniffing suite. Plugins are supported. It has the ability to check whether you are in a switched LAN or not, and to use OS fingerprints (active or passive) to let you know the geometry of the LAN.
This is an example script showing how to make Netware or KixTart like login scripts with Samba. It demonstrates how to make drive mappings based upon username and/or group membership, and how to insert a user-/machinename in a BIND8 DNS server, so you can have a dynamic DNS server with which you can resolve a username/machinename to an IP address.
Eznet makes setting up PPP for Linux easy. Just enter the name of your ISP, a phone number to dial, the login name, the password and the TTY and eznet takes care of the rest. There are no chat scripts to write, nor any pppd configuration files to fuss over. Eznet handles multiple ISPs and can dialup any of them with a single simple command. It also supports dial-on-demand using either kerneld or diald.
Fake has been designed to switch in backup servers on a LAN. It has been used to success over the last year to switch in backup Mail, Web and Proxy servers during periods of both unscheduled and scheduled down time. Fake allows you to take over the IP address of another machine in the LAN by bringing up an additional interface and making use of ARP spoofing. The additional interface can be either a physical interface or an IP alias.