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OCR: NEWS SERVICES One of the early applications of the ARPAnet was the ability for people to discuss their research or findings. Users could go into a Newsgroup, read other people's postings, reply, send e-mail or post something new and start a new thread (topic). To access these Newsgroups, you need a program called a Newsreader, From these beginnings the name UseNet News was coined. VENDOR WINDOWS NT HETWARE Advanced instruments DNews Frontier Technology Intranet Genie Netscape News Server SEARCH CAPABILITIES Servers and services, such as Archie, Veronica and WAIS, arose from the need to find files on the Internet. Archie searches only for the name of the file or parts of the name Veronica is different from the Archle server In that it searches Gopher pagos. A Wide Area Informa- tion Search (WAS) searches fre names, but it goes a step further, also searching file contents for a user-specified string. VENDOR WINDOWS NT hETWARE Novell intranetWare WonLco Technologies Lanindex Excite Excite Altavista Internet Software Altavista Lotus Development Domino Frontier Technology CyberSearch Microsoft Index Server FIREWALLS A firewall is a system or group of systems that enforces an access control policy between two net- works. You can use a firewall to enhance your site's security in a number of ways. The most straight- forward is to create an internal site that is accessible only to computers within your own network. From the standpoint of the security of your organization as a whole, the safest place to put it is completely outside the network. VENDOR WINDOWS NT NETWARE SphereLink Internet Runway Puzzle System's IFcormect Novell IntranetWare Breakwater Technologies Eagle NT Farcwat Secure Computing Firewall for NT Advanced Instruments NTRadis Global Internet Software Group Centi Security Manager Funk Software Steel-Belted Racius for NT Steel-Belted Radius for Netware Puzzle Systems SoftNat WEBserv Mcafee Associates McAfea Enterprise Quarterdeck WebCompas IP GATEWAYS What do you do if you've already assigned addresses to the 400 clients on your LAN and your ISP gives you only one Class C address (which can handle up to 254 hosts)? The Class C address is a legal Intemet address, but the 400 addresses you've assigned are not. Will you have to reassign all the IP addresses on your network? No, you have two options; an IP-to-IP gateway of an IPX-to-IP gateway. The IP gateway network-address translation process transparenty remaps all source IP addresses in external outbound connections so a connection's IP address appears to be a legal IP address. VENDOR WINDOWS NT NETWARE Spherelink Internet Runway Puzzle Systems IP connect IPcconect Funk Software Wande Link Puzzle Systems SoftNet WEBserv Quarterdeck MWare Novell P-IPX Gateway FTP Software Intemet Gateway intemet Gateway Cisco Pexchange Pexchange Frontier Technologies CyberJunction