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Programming & Development

Telephone Systems

$40/hr Starting at $25

Have run and maintained large (200,000+ customers) networks for a large national ISP. Have implemented IPSEC-based VPN with road warrior support for large regional companies over non-homogenous (ATM, frame, T1) networks. Have deployed a multi-city trial of Cisco IP Telephony. Have implemented 802.11 + IPSec hotspots for wireless access into a larger VPN network. Have extensive experience in handling ISP-type support infrastructure: DNS, RADIUS, TACACS, LDAP, news, mail, web services. Have written numerous scripts/applets in Python/Perl for updating webpages, querying network devices, updating configurations, authentication, etc.. Have remotely-administered several Debian linux machines for 8 years. Have investigated fraud/misuse of resources for another large national ISP.

About

$40/hr Ongoing

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Have run and maintained large (200,000+ customers) networks for a large national ISP. Have implemented IPSEC-based VPN with road warrior support for large regional companies over non-homogenous (ATM, frame, T1) networks. Have deployed a multi-city trial of Cisco IP Telephony. Have implemented 802.11 + IPSec hotspots for wireless access into a larger VPN network. Have extensive experience in handling ISP-type support infrastructure: DNS, RADIUS, TACACS, LDAP, news, mail, web services. Have written numerous scripts/applets in Python/Perl for updating webpages, querying network devices, updating configurations, authentication, etc.. Have remotely-administered several Debian linux machines for 8 years. Have investigated fraud/misuse of resources for another large national ISP.

Skills & Expertise

AccessCiscoDNSIpsecLdapLinuxPerlPythonRadiusTelephonyVpnWeb ServicesWireless

2 Reviews

  • Mark_McCreary

    Mark_McCreary says,

    John is an expert Linux network administrator, with a broad range of skills. He has taken my amateur attempts at Secure Shell and put me on solid footing. I look forward to continuing to work with John.

    for ssh setup consulting for Debian on Jun 06, 2003

  • Steve_Brazzell

    Steve_Brazzell says,

    John is truly a networking expert. He provided exact configuration changes for our vpn firewall appliance that worked exactly as desired. In addition, his knowledge of our branch offices' various equipment and software made the remote installations seamless. I wouldn't hesitate to use John again. Steve Brazzell President, Innovatum, Inc.

    for VPN configuration assistance, 3 sites. on May 27, 2003