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Special Forums IP Networking Does Translated IP Matter For Proxy Server (SQUID) Post 302825511 by DGPickett on Monday 24th of June 2013 01:43:16 PM
Old 06-24-2013
No more than without the proxy server. You may lose some identity information if the NAT assigns addresses and ports from a pool. The obvious place to put a proxy is on the firewall network boundary, that is to say, within the local no-NAT domain, so you get the identity right, and let the proxy have access, perhaps bypassing NAT/that-firewall. Of course, if you serve many such behind-NAT spaces, you need a NIC or tunnel so they can all locally connect to the proxy, or many proxy servers. If the power/resources are right, a proxy on a firewall with a local DNS server on the firewall is not a bad model -- just a different way through the same firewall. The proxy server is a very heavy DNS user, so a local DNS cache can be a nice idea. There is a wonderful feeling when you prevent a packet from needing to go out on a network!
 

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ssh-http-proxy-connect(1)					   User Commands					 ssh-http-proxy-connect(1)

NAME
ssh-http-proxy-connect - Secure Shell proxy for HTTP SYNOPSIS
/usr/lib/ssh/ssh-http-proxy-connect [-h http_proxy_host] [-p http_proxy_port] connect_host connect_port DESCRIPTION
A proxy command for ssh(1) that uses HTTP CONNECT. Typical use is where connections external to a network are only allowed via a proxy web server. OPTIONS
The following options are supported: -h http_proxy_host Specifies the proxy web server through which to connect. Overrides the HTTPPROXY and http_proxy environment vari- ables if they are set. -p http_proxy_port Specifies the port on which the proxy web server runs. If not specified, port 80 is assumed. Overrides the HTTP- PROXYPORT and http_proxy environment variables if they are set. OPERANDS
The following operands are supported: http_proxy_host The host name or IP address (IPv4 or IPv6) of the proxy. http_proxy_port The numeric port number to connect to on http_proxy_host. connect_host The name of the remote host to which the proxy web server is to connect you. connect_port The numeric port number of the proxy web server to connect you to on http_proxy_host. EXAMPLES
The recommended way to use a proxy connection command is to configure the ProxyCommand in ssh_config(4) (see Example 1 and Example 2). Example 3 shows how the proxy command can be specified on the command line when running ssh(1). Example 1: Setting the proxy from the environment The following example uses ssh-http-proxy-connect in ssh_config(4) when the proxy is set from the environment: Host playtime.foo.com ProxyCommand /usr/lib/ssh/ssh-http-proxy-connect playtime.foo.com 22 Example 2: Overriding proxy environment variables The following example uses ssh-http-proxy-connect in ssh_config(4) to override (or if not set) proxy environment variables: Host playtime.foo.com ProxyCommand /usr/lib/ssh/ssh-http-proxy-connect -h webcache -p 8080 playtime.foo.com 22 Example 3: Using the command line The following example uses ssh-http-proxy-connect from the ssh(1) command line: example$ ssh -o'ProxyCommand="/usr/lib/ssh/ssh-http-proxy-connect -h webcache -p 8080 playtime.foo.com 22"' playtime.foo.com ENVIRONMENT VARIABLES
HTTPPROXY Takes the http_proxy_host operand to specify the default proxy host. Overrides http_proxy if both are set. HTTPPROXYPORT Takes the http_proxy_port operand to specify the default proxy port. Ignored if HTTPPROXY is not set. http_proxy URL format for specifying proxy host and port. EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsshu | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ SEE ALSO
ssh(1), ssh-socks5-proxy-connect(1), ssh_config(4), attributes(5) SunOS 5.10 24 Oct 2001 ssh-http-proxy-connect(1)
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