%A Shen Lizhe,Hu Bin %T The  Application of  VPN   in the Information Networks %0 Journal Article %D 2002 %J Data Analysis and Knowledge Discovery %R 10.11925/infotech.1003-3513.2002.04.28 %P 78-80 %V 18 %N 4 %U {https://manu44.magtech.com.cn/Jwk_infotech_wk3/CN/abstract/article_1542.shtml} %8 2002-08-25 %X

This paper briefly introduces aspects of virtual private networks which would deeply influence the development of the library information network,including its background,maintechnology,implemention,its defects are also descussed.