Last week, we looked at how to do Selective Compression on BIG-IP with a local traffic policy so this week let’s try something security related using the same procedures. You can associate a BIG-IP local traffic policy to prevent a spoof of an...
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Last week, we looked at how to do Selective Compression on BIG-IP with a local traffic policy so this week let’s try something security related using the same procedures. You can associate a BIG-IP local traffic policy to prevent a spoof of an...

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Resolved: F5 Big-IP, X-Forwarded-For and IIS Logs #it #dev #development
Resolved: F5 Big-IP, X-Forwarded-For and IIS Logs #it #dev #development
F5 Big-IP, X-Forwarded-For and IIS Logs
I’ve got an F5 Big-IP that is mangaged by our hosting provider. It’s dedicated to our private VLAN, etc. Works great :)
We requested them to add in an X-Forwarded-For HTTP-Header field. They’ve done that and we can now access that in the code. Awesome :)
But .. for our IIS logs, it’s still the IP of the F5 machine. I think I was told that we need to apply…
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プロキシやロードバランサー環境でのIP制限設定方法
WEBサーバをロードバランサー経由にする場合、
リモートアドレスがロードバランサーのものになってしまいます。
その場合、多くのロードバランサーも「X-Forwarded-For」ヘッダに、
アクセス元のIPアドレスを設定してくれるので、
CGIなどのアプリケーション的にも問題がなくなるはずです。
まず、httpd.confにこのように設定すれば上記を実現できる。
SetEnvIf X-Forwarded-For ".+" forwarded RewriteEngine On RewriteRule ^(.*) - [E=CLIENT_ADDR:%{REMOTE_ADDR},L] RequestHeader set X-Forwarded-For "%{CLIENT_ADDR}e" env=!forwarded
実際に下記のPHPスクリプトで、ロードバランサー経由でアクセスすると
該当変数を確認できる。
<?php print("REMOTE_ADDR=" . $_SERVER["REMOTE_ADDR"]); print("forwarded=" . $_SERVER["forwarded"]); print("CLIENT_ADDR=" . $_SERVER["CLIENT_ADDR"]); print("HTTP_X_FORWARDED_FOR=" . $_SERVER["HTTP_X_FORWARDED_FOR"]); ?>
アプリケーションではなく、httpd.confのみで設定したい場合、
SetEnvIf X-Forwarded-For "^123\\.456\\.789\\.111$" allowed_ip
<Location /> Order deny,allow Deny from all Allow from env=allowed_ip </Location>
これでリモートIPアドレス123.456.789.111は許可されるはずです。
X-Forwarded-For un nepareizās IP adreses
http://dlvr.it/3fklN6