17 more replies! Das Web Cache Communication Protocol (WCCP) ist ein von Cisco entwickeltes und von der Internet Engineering Task Force (IETF) standardisiertes Routing-Protokoll. WCCP is used between a Cisco router and a proxy server to communicate. und so die Übertragungskosten und die Downloadzeiten reduzieren. If you didn’t configure a hostname it will spam your log with this message: Don’t worry about this, we will fix it in a minute. Cisco IOS Release 12.1 and later releases allow the use of either Version 1 (WCCPv1) or Version 2 (WCCPv2) of the protocol. Important Many older Most Cisco routers support a protocol called Web Cache Communication Protocol, or WCCP. WCCP is used between a Cisco router and a proxy server to communicate. All rights reserved. When you configure a “normal” GRE tunnel between two routers you have to specify the source + destination of the tunnel yourself, now we don’t have to because WCCP does this for us. verkürzen. WCCPについてまとめる｡ 用途 モチベーション コンテンツのスケーラビリティとアベイラビリティを最大限確保したい！！ 技術 トラフィックのリダイレクト コンテンツルーティングテクノロジーの一種 頻繁にアクセスするコンテンツをキャッシュして連続要求に答える｡ I may have some settings on my router config which may perhaps clash with the GRE tunnel. It’s also used as a “hello” message so the router knows when the proxy is down. The proxy server will tell the router that it is “alive” and ready to serve webpages. Let’s check if squid is having any issues: The “squid.out” logfile contains all the errors. WCCP (Web Cache Communication Protocol) is a Cisco protocol that lets you redirect web traffic from clients to a proxy server. I’m not sure how squid works if you use it as a regular HTTPS proxy, removing WCCP and configuring the proxy in your web browser. )がなんともいえず｡ PVも物悲しい感じ（オズの魔法使いがモデルらしい）で曲とマ... よく使うWiresharkのフィルタの設定メモ。 無線LANに関する詳しい情報は 802.11無線ネットワーク管理 第2版 によく出ている。 ・IPアドレスでフィルタ ip.src==192.168.1.1（送信元でフィルタ） ip.dst==192.168.1.1（あて先で... クライアントのリクエストパケットを受信するインターフェース(client-facing IF)がtargetとなる｡, ※webcacheサービスをenableにする｡アプリケーション エンジンで定義されているダイナミック サービスに対応するサービス番号を指定する｡, http://www.cisco.com/cisco/web/support/JP/docs/SW/LANSWT-Access/CAT3750SWT/CG/005/swwccp.html?bid=0900e4b182528cd1, http://www.cisco.com/en/US/docs/ios/12_2/configfun/command/reference/frf018.html, La La La/Naughty Boy ft. Sam SmithのPVの意味は？, 特定のクライアント､サーバのみdisableしたい場合､WCCPリダイレクトACLが利用できる｡（後で設定する）｡. Normally GRE is used when the proxy server is on another subnet, when the proxy server is on the same subnet you can also use layer 2 redirection. For up to date information for the Cisco device in the deployment, consult with Cisco. Il fournit un mécanisme de redirection des flux de trafics en temps réel. Monitoring: If you want to know what your users are doing you can track this on the proxy server. La version 12.1 de l'IOS Cisco et les suivantes autorise l'utilisation de la version 1 (WCCPv1) ou de la version 2 (WCCPv2) du protocol. Filtering: all web traffic goes through the proxy server first so you can filter certain websites. It supports HTTP, HTTPS, FTP and of course WCCP. I will use the topology that I just showed you for this demonstration. The important part here is that the source IP address of this packet is the IP address of the host on the Internet, NOT the proxy server! Application & Content Networking System (ACNS), This page was last edited on 25 September 2020, at 17:26. The proxy server will tell the router that it is “alive” and ready to serve webpages. The Cisco Catalyst 6500 running Cisco IOS Software provides an ideal platform to deliver WCCP services when the configuration uses hardware resources correctly. All the other traffic from 192.168.1.0 /24 heading towards TCP port 80 will be redirected: To activate the access-lists for WCCP you need to use the following command: If you like to keep on reading, Become a Member Now! Squid is a very popular proxy server that is used by a lot of ISPs. The purpose of the interaction is to establish and maintain the transparent redirection of selected types of traffic flowing through a group of routers. The Cisco Catalyst 6500 supports two main recommended configurations for deploying WCCP; one configuration uses L2 traffic transport methods with full hardware-based switching, and this method should be used whenever … We are still using TCP port 3128 but I added intercept. Das Web Cache Communication Protocol Using a proxy server has a number of advantages: WCCP is used between a Cisco router and a proxy server to communicate. My plan was to spend 1-2 hours of configuring it so I could write a blogpost on it but it took me a full day to get it to work. WCCP checks appear to be correct however. WCCP spezifiziert die Interaktion zwischen einem oder mehreren Routern und einem oder mehreren