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Untitled Document
Virtual Private Network (VPN) - ?????? 1
โดย Support วันที่ 07/09/2548 17:01
 

?????????????????????? ??????????????????????????? Switching ??????????????????? Layer 2 ??? OSI Model ?????? ???????????????????? Switching ???? ???????????????????????????????????????????????????????????? Local Area Network ????????????? LAN ???????  ??????????????????????????????????????????????????????????????????? ???????????? WAN (Wide Area Network) ??????????? ????????????????????????????????????????????? ????????? VPN (Virtual Private Network) ???????

??????????????????????????????????????????????????????? ??????????????????? VPN ?????????????????????????????????????????? ???????????????????????????????????????????? ????????  ???????????? ??????????????? VPN ????????????????????????????? ????????????????????, ????????????, ??????????? ??? VPN ????????????-?????????????????????????  ???????????? ????????????????????????????????????????? Virtual Private Network ???? VPN ?????????????


VPN ??????? ?

?????????????????????????? VPN ???? ??????????????????????????

"VPN is a Private Communications Network Existing within a Shared or Public Network - Especially the Internet"

????????????????? ????????????????????????????????? VPN ????????? ???????????

  • ????????? VPN ???????????????????????????????????????????????? ????????????????????????????????????????????????????????
  • ????????? VPN ?????????????????????????????????????????????????????????????????????-?????????????????????????? Internet
  • ????????????????????????????????????????????????? VPN ????????? ????????????? Internet ?????????????????????????????????

????????? VPN ????????????????? ?

????????? VPN ?????????????????????????? Internet ??????????????????? Internet ?????????????????????????????????? ???????????????????????????????????????????? ????????????????????????????????????? VPN ?????????????? 2 ??????????????????? ?????

1. Tunneling:
????? Tunneling ???????????????????????????? ???????????????????????????????????????? VPN ??????? ???????????????????????????????????????????????????????????????????? Internet ???????????? VPN ????????? Tunneling ?????????????????? 2 ?????????

  • End-to-End Tunneling : ??????????? Tunneling ??????????????????????????? 2 ??????????????????? VPN ???????????????????????????????????????????????????? ???????????????????? Tunneling, ????????????????? (Data Encryption) ?????????????????????????????????-????????????????????????????????? VPN ???? 2 ????

  • Node-to-Node Tunneling : ???????????? Node-to-Node ??? ?????????????????????? Tunneling ????????????????????????????????? ????????????????????? Router ??????????????????????????????????????? VPN

??????????? Tunneling ??????? 2 ?????????????????????????????????????????????? Protocol ????????????????????????????? VPN ???????????? Protocol ??????????????? "VPN Tunneling Protocol" ??????????????????????????????????????????????????????????????????????????????????? ??????

  • The Layer 2 Tunneling Protocol (L2TP)
  • IP Security Protocol (IPSec)
  • Generic Routing Encapsulation Protocol (GRE)
  • The Point-to-Point Tunneling Protocol (PPTP)
  • Layer 2 Forwarding Protocol (L2F)

2. Security Sevices:
????????????????????????????????????????????????????? VPN ????? ???????????????????? ???????? Security ??????? ???????????????? Security ??????????????????????????????????? VPN ????????????????? ???? Private ???????? Security ?????????????????????????????????????????

  • Authentication : ????????????????? Security ????????????????????????? ???????????????????????????-?????????????????????????????????????????????? ???????????????????????????????????????????????????????? User Name ??? Password ???????????????????????
  • Confidentiality (Data Encryption) : ???????????????????????????? ??????????????????????????????????????????????????????? Hacker ?????????????????????????????????????????? VPN ???????? Internet ???? ?????????????????? ???????????????????????????? Key ?????? ???? ??????????????? ?????????????????????????????? ??????????????????????????????????????????????????????????? ??????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????? ?????????????????????????????????????????????????????????????????? 2 ???????????????? VPN ???????? ???????????????????????? Hacker ????????????????????????-??????????? Internet ?? Hacker ????????????????????????????????????????? ???????????????????? ??????????????? ??? Hacker ??????????????????????????????????????????????????????????????????????????????????????????

  • Access Control (Firewall) : ???? Firewall ?????????? Security ???????????????????????????????????????? ?????????????????????????????????? ??????????????????????????????????????????????????????????????? ??????????? Firewall ???????????????????? Policy ??????????????????????????????? ?????????? Firewall ????????????????????????????????????????????????????? ?????????????????????????????????????????? ????????????????????????????????????????????? Firewall ????????? 3 ????????????? ???
    • Packet Filtering Firewall
    • Application Gateway Firewall
    • Stateful Inspection Firewall

????????????????????????????????????????????????????????????????????????????????????????????????? VPN ?????????????????????????????????????????????? VPN ??????????????? ??????????????????? Application ????? ???????????????????????????? VPN ???, ???????????????? VPN  ???????????-??????????????????? VPN ?????????????

?????????????????????????????????????????????????????? Virtual Private Network (VPN) ?????????????????????????????????????? http://www.alliedtelesyn.com  ????????????????????? Technical Support ??? MVT  ???. 0-2993-8989   ???? E-mail ????? smartcare@mvt.co.th  ?????????????????????? . . .

????????? : Allied Telesyn International (Asia) Pte. Ltd.

 
 
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