VPN (IPsec) [サーバー・ネットワーク管理]
VPN について会話が成立するくらいの知識は身につけようと、ちょっと調べた。
[書籍情報]
【ゼロからはじめるVPN】
http://www.ascii.co.jp/books/detail/4-7561/4-7561-4293-1.html
たまたま、手元にあったので、さらっと読んでみた。
２年程前に出版されたものなので、製品情報やトレンドについて参考になるか、ちょっと微妙。IPSec 中心。
IPSec については、Google君に聞くと、以下の本が評判よさそう
【マスタリングIPsec】
http://www.oreilly.co.jp/books/4873110599/
『マスタリングIPsec』サポートページ
http://www.tatsuyababa.com/MasteringIPsec/
【IPsec徹底入門】
http://www.amazon.co.jp/exec/obidos/ASIN/4798101214/249-6119089-0382745
【IPsecによるVPN構築ガイド[基礎と実践]】
http://www.gihyo.co.jp/books/syoseki-contents.php/4-7741-1636-X
[Web上の情報]
【技術解説 IT管理者のためのIPSec講座 】
http://www.atmarkit.co.jp/fpc/kaisetsu/ipsec/ipsec01.html
しかし、どうもうまく普及していない模様。
【FreeS/WANによるIPSecの導入と運用】
http://www.atmarkit.co.jp/flinux/special/ipsec/ipsec01a.html
【（Linuxの）IPsecの困難】
http://www.yamdas.org/column/technique/ipsec2.html
Global IP じゃないとだめとか、固定IPじゃないとだめとか、というあたりが障壁になっている模様。
実際、一番上に挙げた書籍より後に同じ会社から出た本
【失敗しないVPN構築】
http://www.ascii.co.jp/books/detail/4-7561/4-7561-4569-8.html
を本屋でぱらぱらっと見たら、SoftEther を中心に解説していて、IPsec は添え物の感がある。
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