VPN (Virtual Private Network) ???????????????????

VPN ????? Virtual Private Network ??? ???????????
?????????? ?????? ???????????????????? Network ?????????
Resources ??????????? Web Server????? Exchange Server
??????? ??????????????? User ?????????????????????
???????????????????? ???????????????????????????
??????????????????????? ???????????????? ???????? ?????????
Web Server????? Exchange Server????? ????????????????
??????????????? ???????????????? Web Server ???
????????????? Web object ??????? ??????????????????? Client
?????? ?????????????? (HTTP object) ??????? ????????
????????????????? ?????????????? ????? ????? Network
??????? Web Server ??????? ???????????? ? Server
????????? Web object ??????? ????? Network ??? User ????????? ????
Network ????????? User ? Web agent ??????? Browser ??????
????? ?????????????? HTTP (Hyper Text Transfer
Protocol) object ??????? ???????? ?????????????
????????????????? Web Server ??????????????
???????????????????????
Exchange Server ? ????????????????????? Mail
Service ????? ???????? Exchange Server ?? ?????????????????
Mail Service ???????? Web Mail, E-mail ???? Mail Service
?????? ?????????????? ????????? Exchange Server ??? Mail
box user ??????????? ????????? Permission ????
????????????????????? Exchange Server ??
??????????????? Mail Service ??????? ??????????????
???????? ????????........
(?) Web Mail
(?) NNTP
(?) E Mail
(?) H.400

????? Network ??????? ????????????? Exchange Server,
Web Server ????? FTTP Server ??????? ?????????? Server
??????? ????? Network ?? User ???? ???????????
???????????????? Internetwork ?? ????? ???????????????
?????????????????????? VPN Connection ?? ??????? VPN
Network ??? ??????????????? ??????? (?) ?????? ??????????????
????????? ( Remote Access VPN) ????? Site-To-Site VPN ???
???????? ? Site-To-Site VPN ??? ??????????????? VPN
Gateway-To-Gateway (or) VPN Server-To-Server ???????
??????????????? ? VPN Network ? VPN Client
??????????????? Remote access user ??????? ??????
?????????? Server ??????? ???????????????????
Internetwork ?? VPN Client ???? ???????????????? Device
????????? Software ??????????? VPN gateway ??? ??????????
???????? ??????????????? ???????????? ???? VPN client ?????
??????????? ???????? ???????? VPN Network ???????
???????? Service ???????? VPN Site-To-Site ??? ???????? ?
VPN Site-To-Site Connection ??? VPN Network ???
?????????? ?????? ???????? ???????????? ??????? VPN Site-
To-Site Connection ? ???????????????????? - (?) ?????
Network ?? ???????????????????? VPN Client (Remote user)
????????? Network ????????? Resource ???????? ????????????????
??????????????? (?) ???????????????????? Client
?????????????????? Password ???? ???????????????????? (?)
?????????? VPN Network ?????????
????????????????????????????? (?) VPN Network ???????
Internetwork ?? ?????? ???????????????? ????????????????
???????????????????? (?) VPN Network ??????? ????????????
Data ??????? Encrypt ???????????????????? ???????? ????????
????????????????? VPN Network ????????????? VPN
Client (Remote access user) ????? VPN Site-To-Site Network
????? ????????????? ???????????????????? ????????

Credit Youth Computer