PETC became known for establishing some of the first multi protocol stack

Petc became known for establishing some of the first

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PETC became known for establishing some of the first multi-protocol stack client PCs that could actually do many client-server applications without having to reboot and reload 6-4
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Chapter 6 specific protocol types. For example on startup the client PC could load TCP/UDP/IP, IPX/SPX, IBM-3270 for connectivity to the processors or servers. We also loaded on some PCs, Xerox Network Services (XNS) and Local Area Transport (LAT) protocols for connectivity to terminal servers that connected to the back plane of the VAX processors for those users who for whatever reasons could not be completely connected to the evolving Ethernet. For instance, when their PC would not support installation of a NIC or they could not be rewired to connect to a HUB or Switch. We eventually integrated Internet and a Wide Area Network interfaces into PETC’s LAN. PETC became the Internet gateway site for 17 other sites nationwide. Though wireless Ethernet did not arrive prior to the end of my tenure, I’m sure I would have integrated this technology into PETC’s architecture had I remained there. However, I needed to move on to start my own company in the growing areas of Networking & Telecommunications. But PETC became a notable site in the region for demonstrating the promise of Local Area Networking and client-server computing over a physically distributed environment. War Story Wireless Snooping (Objective: Illustrate the dangers of low security wireless) A friend of mine took his laptop with a wireless sniffer to a public access point in a local store. The store provided free wireless Internet access – no signing up for access, no buying daypasses or annual contracts – just plain and simple free access. Anyone could bring their laptop in and use the Internet. My friend didn’t connect into the network, but simply used the sniffer to monitor traffic flowing between the access point and the laptops that customers brought in to work on as they sipped their coffee. After a couple of hours, he had collected many thousands of packets as he sat there, watching the traffic flow. Some of the packets were encrypted, some weren’t. He poked through the non-encrypted packets and found a dozen or so that contained user logins to Web sites. The web sites failed to use proper encryption for the login and thus he had usernames and passwords for supposedly private Web sites. One was a free e-mail site, so he now had access to the individual’s e-mail and could read, erase or send e-mail as this person. And to this point, he had broken no laws. Monitoring public radio broadcasts – even data packets – is not a crime. As long as you take no active measures, it is the same as listening to a radio. At this point, he started using his decryption software to see if he could break the encrypted packets, because they likely contained the most “interesting” stuff. When he did this action, he crossed the line and started to break the law, and I asked him not to tell me any more.
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  • Summer '12
  • D
  • Local area networks, wired LAN, wireless local area

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