Restricts the commands available to scp- and sftp-users http://packages.debian.org/ja/squeeze/scponly http://packages.debian.org/ja/squeeze/scponly-full めも、未評価

sed-like editor for binary files http://packages.debian.org/ja/sid/bbe めも、未評価

proxy処理前のクライアントIPアドレスを格納するHTTPヘッダー http://www-06.ibm.com/jp/domino01/mkt/cnpages1.nsf/page/default-000D261C http://d.hatena.ne.jp/wakatono/20050615 めも