Enabling HTTP web proxy
The HTTP web proxy has these characteristics:
• The cache sizes range from 50 GB to 500 GB on SteelHeads.
• The cache content is persistent after reboots and service restarts.
• There isn’t individual object size limitation.
• The cache storage space has been expanded on SteelHeads. The xx55 models have 50 GB of cache space for Web Proxy storage.
• The request logging format has been expanded to improve visibility, debugging, and diagnostics.
• You can use the Web proxy with virtual in-path deployments such as WCCP and PBR.
The in-path rule table includes a default web proxy rule set to Auto. By default, all traffic not specified in user-configured rules is web proxied for Internet-bound traffic. This includes all traffic destined to public IP addresses not included in Request for Comments (RFC) 1918 on port 80 and 443. Only IPv4 is supported for web proxy. SteelHead Cloud Acceleration (SCA) takes priority over web proxy, when web proxy is configured as Auto.
If you need a more fine-grained rule for public IP addresses, then you must add a new in-path rule with these options:
• Type: Auto Discover
• Web Proxy: Auto
• Source Subnet: IPv4 address or subnet
• Destination Subnet: IPv4 address or subnet
• Port: No matter what port is specified, only port 80 and 443 traffic is directed to the web proxy
If you need an in-path rule for private or intranet IP addresses, specify these options:
• Type: Pass Through
• Web Proxy: Force
• Port: Any port or port-label specified is proxied. This value results in plain TCP proxying without optimizations if the traffic isn’t detected to be HTTP or HTTPS.
To enable HTTP web proxy
2. Choose Manage > Optimization: Web Proxy to display the Web Proxy page.
3. Select Enable Web Proxy to enable HTTP Web caching.
4. Click Save to save your settings.