My EtherealMind» Blue Coat http://etherealmind.com Network design, architecture, thinking, working. Tech. Sun, 20 May 2012 09:15:21 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 PacketShaper and Flow Directions http://etherealmind.com/packetshaper-inbound-outbound-outside-inside/ http://etherealmind.com/packetshaper-inbound-outbound-outside-inside/#comments Sat, 14 May 2011 23:45:16 +0000 Greg Ferro http://etherealmind.com/?p=5607 initiated the three way handshake. For purposes here, the Client always initiates the TCP connection, and the Server terminates the connection.

TCP Session and Direction

Most people understand the three way handshake, but not many consider the direction of the session. Packet shaper flow directions 0
The connection from the client to the server is outbound, but is inbound on the server. And vice versa, the server outbound session is inbound on the client. Packet shaper flow directions 0 1 That's not very useful for being able to define the direction of flows.

Why is direction important ?

Direction of flows is important if you want to configure asymmetric rules. That is, not all protocols require symmetic bandwidth. For example, HTTP traffic is usually a 10:1 ratio for reply to request. That is, a request for this webpage is about 10KB, but the reply with the data, images and javascript is more than 100KB. Packet shaper flow directions 0 2 For an FTP upload server, you might have the reverse condition where the inbound traffic is far more than the outbound. To make the most of your Internet connection for this case, you could configure the inbound bandwidth on your Internet connection to be 80% FTP, 20% HTTP and the outbound bandwidth to be 20% FTP and 80% HTTP. This gives a far better utilisation, especially in regards to better TCP Windowing and overall TCP goodput.]]> http://etherealmind.com/packetshaper-inbound-outbound-outside-inside/feed/ 3 Cisco IOS Load Balancing for Blue Coat SGOS http://etherealmind.com/cisco-load-balancing-blue-coat-sgos/ http://etherealmind.com/cisco-load-balancing-blue-coat-sgos/#comments Wed, 12 Aug 2009 22:01:04 +0000 Greg Ferro http://etherealmind.com/?p=1666 http://etherealmind.com/cisco-load-balancing-blue-coat-sgos/feed/ 8 Blue Coat to Acquire Packeteer-Excellent-Outcome http://etherealmind.com/blue-coat-to-acquire-packeteer/ http://etherealmind.com/blue-coat-to-acquire-packeteer/#comments Mon, 21 Apr 2008 16:39:32 +0000 Greg Ferro http://etherealmind.com/?p=173 http://etherealmind.com/blue-coat-to-acquire-packeteer/feed/ 4 Blue Coat ProxySG VIP and Cisco Switches Need Multicast Enabled http://etherealmind.com/proxysg-vip-vrrp-multicast-cisco-switch/ http://etherealmind.com/proxysg-vip-vrrp-multicast-cisco-switch/#comments Sun, 30 Mar 2008 15:28:15 +0000 Greg Ferro http://etherealmind.com/2008/03/30/proxysg-vip-vrrp-multicast-cisco-switch/ http://etherealmind.com/proxysg-vip-vrrp-multicast-cisco-switch/feed/ 3 Delete the X-Bluecoat-via Header on Your ProxySG http://etherealmind.com/delete-the-http-header-bluecoat-x-via-on-your-proxy/ http://etherealmind.com/delete-the-http-header-bluecoat-x-via-on-your-proxy/#comments Wed, 27 Feb 2008 21:56:38 +0000 Greg Ferro http://etherealmind.com/2008/02/27/delete-the-http-header-bluecoat-x-via-on-your-proxy/ http://etherealmind.com/delete-the-http-header-bluecoat-x-via-on-your-proxy/feed/ 1 Checking Connectivity on Your Blue Coat ProxySG http://etherealmind.com/checking-connectivity-bluecoat-proxysg/ http://etherealmind.com/checking-connectivity-bluecoat-proxysg/#comments Sun, 24 Feb 2008 17:52:28 +0000 Greg Ferro http://etherealmind.com/?p=93 http://etherealmind.com/checking-connectivity-bluecoat-proxysg/feed/ 0 Performance of Blue Coat BCAAA Agent for Authentication http://etherealmind.com/bcaaa-bluecoat-performance-speed-capacity/ http://etherealmind.com/bcaaa-bluecoat-performance-speed-capacity/#comments Mon, 11 Feb 2008 21:21:38 +0000 Greg Ferro http://etherealmind.com/?p=80 http://etherealmind.com/bcaaa-bluecoat-performance-speed-capacity/feed/ 2 Loading Policy Configuration in the Local File http://etherealmind.com/loading-bluecoat-policy-local-file/ http://etherealmind.com/loading-bluecoat-policy-local-file/#comments Sun, 10 Feb 2008 21:23:42 +0000 Greg Ferro http://etherealmind.com/2008/02/10/loading-bluecoat-policy-local-file/ http://etherealmind.com/loading-bluecoat-policy-local-file/feed/ 5 SOCKS Clients That Are Available for Your Blue Coat ProxySG – Update http://etherealmind.com/socks-client-for-proxysg/ http://etherealmind.com/socks-client-for-proxysg/#comments Wed, 06 Feb 2008 17:56:24 +0000 Greg Ferro http://etherealmind.com/2008/02/06/socks-client-for-proxysg/ http://etherealmind.com/socks-client-for-proxysg/feed/ 3