画像の著作権保護−ウィルコム

WILLCOM

やっとウィルコムでも画像の著作権保護方法について公式に説明が追加されました。
少し前に、社員用ブログ（dfltweb1.onamae.com – このドメインはお名前.comで取得されています。）に書かれていた感じからすると、前からこの方法で保護できていたようで「隠していたんだろうか？」と勘ぐってしまう私です。

画像ファイルの保存不可／再配布不可について

■ 再配布不可（コピーガード）の設定方法ついて

機能を有効にするためには、画像ファイル名と拡張子の間に「.-CG-.」または「.-cg-.」を追加します。次に、HTMLソースレベルで明示的に「.-CG-.」又は「.-cg-.」を記述します。

あぁ、がっかり。

本気で保護するならば、ウィルコム専用の画像ディレクトリを作成して、.htaccess等でアクセス制限する必要がありますね。
でも、ウィルコムのIPアドレス帯域って多い（102個）ので大変ですね。

Order Deny,Allow
Deny from all
Allow from 61.198.129.0/24
Allow from 61.198.138.100/32
Allow from 61.198.138.101/32
Allow from 61.198.138.102/32
Allow from 61.198.138.103/32
Allow from 61.198.139.0/29
Allow from 61.198.139.128/27
Allow from 61.198.139.160/28
Allow from 61.198.140.0/24
Allow from 61.198.141.0/24
Allow from 61.198.142.0/24
Allow from 61.198.161.0/24
Allow from 61.198.165.0/24
Allow from 61.198.166.0/24
Allow from 61.198.168.0/24
Allow from 61.198.169.0/24
Allow from 61.198.170.0/24
Allow from 61.198.249.0/24
Allow from 61.198.250.0/24
Allow from 61.198.253.0/24
Allow from 61.198.254.0/24
Allow from 61.198.255.0/24
Allow from 61.198.248.0/24
Allow from 61.204.0.0/24
Allow from 61.204.2.0/24
Allow from 61.204.3.0/25
Allow from 61.204.4.0/24
Allow from 61.204.5.0/24
Allow from 61.204.6.0/25
Allow from 125.28.0.0/24
Allow from 125.28.1.0/24
Allow from 125.28.2.0/24
Allow from 125.28.3.0/24
Allow from 125.28.4.0/24
Allow from 125.28.5.0/24
Allow from 125.28.8.0/24
Allow from 125.28.15.0/24
Allow from 125.28.16.0/24
Allow from 125.28.17.0/24
Allow from 210.168.246.0/24
Allow from 210.168.247.0/24
Allow from 211.18.232.0/24
Allow from 211.18.233.0/24
Allow from 211.18.234.0/24
Allow from 211.18.235.0/24
Allow from 211.18.236.0/24
Allow from 211.18.237.0/24
Allow from 219.108.7.0/24
Allow from 219.108.8.0/24
Allow from 219.108.9.0/24
Allow from 219.108.10.0/24
Allow from 219.108.14.0/24
Allow from 219.108.15.0/24
Allow from 221.119.0.0/24
Allow from 221.119.1.0/24
Allow from 221.119.2.0/24
Allow from 221.119.3.0/24
Allow from 221.119.4.0/24
Allow from 221.119.6.0/24
Allow from 221.119.7.0/24
Allow from 221.119.8.0/24
Allow from 221.119.9.0/24
Allow from 61.198.130.0/24
Allow from 61.198.163.0/24
Allow from 61.204.6.128/25
Allow from 61.204.7.0/25
Allow from 61.204.92.0/24
Allow from 61.204.93.0/24
Allow from 61.204.94.0/24
Allow from 61.204.95.0/24
Allow from 61.198.128.0/24
Allow from 61.198.131.0/24
Allow from 61.198.143.0/24
Allow from 61.198.172.0/24
Allow from 61.198.173.0/24
Allow from 61.198.252.0/24
Allow from 61.204.3.128/25
Allow from 211.126.192.128/25
Allow from 219.108.11.0/24
Allow from 219.108.12.0/24
Allow from 219.108.13.0/24
Allow from 61.198.132.0/24
Allow from 61.198.133.0/24
Allow from 61.198.134.0/24
Allow from 61.198.135.0/24
Allow from 61.198.136.0/24
Allow from 61.198.137.0/24
Allow from 61.198.160.0/24
Allow from 61.198.162.0/24
Allow from 61.198.164.0/24
Allow from 61.198.171.0/24
Allow from 61.198.174.0/24
Allow from 61.198.175.0/24
Allow from 61.198.251.0/24
Allow from 210.169.92.0/24
Allow from 210.169.93.0/24
Allow from 210.169.94.0/24
Allow from 210.169.95.0/24
Allow from 210.169.96.0/24
Allow from 210.169.97.0/24
Allow from 210.169.98.0/24
Allow from 210.169.99.0/24

※最新のIPアドレスリストは以下に置いてあります。
http://cgi.wap2.jp/download/ip/willcom_ip.txt