参考:Easy Setup for VALUE DOMAIN Users
※最後のピリオドをわすれないように!
ピリオドを付けないとサブドメインと見なされて下記のようになってしまうので注意。
hoge.example.jpで、example2.comにアクセスできるようにしたい場合
cname hoge example2.com
と(最後にピリオドを付けずに)設定し、nslookupすると、
hoge.example.jp canonical name = example2.com.example.jp.
Name: example2.com.example.jp
となってしまう。
cname hoge example2.com.
のように最後にピリオドを付ければ、
↓
hoge.example.jp canonical name = example2.com.
Name: example2.com
のように期待通りのCNAMEになる。
2015年9月5日土曜日
VALUE DOMAINで CNAMEを設定するときの注意
2015年6月29日月曜日
JavaScript, CSSライブラリの CDN
たくさんのライブラリをホスティングしているところ
RawGit
・(cdn.rawgit.comの方は)by MaxCDN
・Github上のライブラリが対象
jsDelivr
・by MaxCDN and CloudFlare
cdnjs
・by CloudFlare
OSSCDN
・by MaxCDN
特定のライブラリのみホスティングしているところ(と言ってもGoogleとMicrosoftはそこそこ揃ってる)
Google Developers Hosted Libraries
・by Google
・AngularJSあり
Microsoft Ajax Content Delivery Network
・by Microsoft
・Bootstrap、Knockoutあり
jQuery CDN
・by MaxCDN
・jQeuryファミリーのみ
Bootstrap CDN
・by MaxCDN
・Bootstrap、Font AwesomeとBootswatchのみ
Yahoo! Developer Network
・by Yahoo
・YUIとPure.cssのみ
・HTTPS不可
MaxCDNがんばってる
参考
floatingdays: JavaScriptフレームワーク/ライブラリの CDNいろいろ
2015年5月2日土曜日
画像圧縮サービスの比較
リンク集的メモ。
- J I C - a Javascript Image Compressor
- TinyPNG – Compress PNG images while preserving transparency
- Compressor.io - optimize and compress your images and photos
- Online Image Optimizer
- JPEGmini | Process your photo
ファイルサイズが一番小さいのはTinyPNGのJPEGだった。
(JICは圧縮率を指定できるので除外。) ただ、Compressor.ioのPNGがファイルサイズの割に一番きれいだった。
(paint.netで同じようなPNGにしてみたが、Compressor.ioのPNGの方がなぜかきれいだった。)
2015年3月8日日曜日
Linuxのセキュリティ対策
2015年3月6日金曜日
愛称?の付けられた脆弱性
(2015/6/29 VENOMとLogjamを追加)
愛称というか、通称というか、ニックネームというか。
2011年 9月 BEAST (CBC)
2012年 9月 CRIME (TLS)
2013年 2月 Lucky Thirteen (TLS)
2013年 8月 BREACH (SSL/TLS)
2014年 6月 CCS Injection (OpenSSL)
2014年 9月 Shellshock (bash)
2014年10月 POODLE (CBC)
2014年11月 WinShock (Windows)
2015年 1月 GHOST (glibc)
2015年 3月 FREAK (OpenSSL他)
2015年 5月 VENOM(QEMU)
2015年 5月 Logjam(SSL/TLS)
2014年はWindows XPサポート期限終了(4月)もあって当たり年と言われたが、今年はそれを上回る勢い...
ところでSSL/TLSはPOODLE対応を境にTLS/SSLと呼び替えられ始めてるみたい。いまだにサーバ証明書はSSL証明書と書かれることが多いけど...
参考
Transport Layer Security - Wikipedia
華麗なる因数分解:FREAK攻撃の仕組み - ぼちぼち日記
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