Scientific Atlanta
	Network Administrator/Encryption Specialist	Jan 2001-Oct 2001
	Support of RF cable network including Sun Solaris, Linux, FreeBSD, TCP over ATM, TCP over Quaternary Phase-Shift Keying, TCP over Quadrature Amplitude Modulation, Ethernet, OC3, SWIF, RF broad and narrow band. Satellite communication over encrypted channels. RSA and DES3 encryption formulating, implementing and troubleshooting. RF and software data compression. Working with rsh, ssh and X in a multiple system environment, pulling displays across from Solaris, Linux, BSD and Windows in a WAN environment. Server applications including ssh, X, natd, ipfw, sendmail, Veritas, rsh, telnet and informix. Support of DSN network and all components including: DNCS, TED, App Server (DSN) BIG, Data QAM, QAM, mQAM, QPSK (mod & dmod), set-top, Cherry Picker, RTE, IRT, and MDR. Support of communications over SWIF, ATM, Ethernet, RF, DEHI, Sonet, AM-Fiber, DS-3 and OC3. Working with some of the newer DSN technologies such as IPG, IPPV, and VOD. DSN systems ranged in size from our local network at about 200 users to sites as large as 500,000 users. Worked on both Sci-Atl Applications as well as some 3ed party apps such as Wink. Lots of shell scripting for customer sites as well as scripts for local users. Taught classes on the encryption scheme for Scientific Atlanta equipment, from the RSA key swap during staging to RSA monthly swap and DES3 exchange for encrypted channels. Post disaster recovery of encrypted data after curuption and key loss. Setup and administration of file services such as FTP, rsh, ssh, NFS and samba. Shell scripting for both local and remote processes. Working with SUID and SGID bits on user and system processes.