18.07.2013 Views

Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Chapter 9: Configuring Proxies<br />

Notes on selected proxy configurations<br />

260<br />

Sun RPC proxy considerations<br />

The RPC proxy allows you to transfer Sun RPC traffic between a client<br />

application and an RPC server on opposite sides <strong>of</strong> the <strong>Sidewinder</strong> <strong>G2</strong>. This<br />

proxy listens on port 111 (the portmap process) for RPC requests and forwards<br />

them to the destination server.<br />

Both TCP and UDP traffic are supported for this proxy. However, some<br />

additional configuration may be necessary for timeout processing when<br />

proxying UDP traffic. UDP sessions remain live until the idle timeout threshold<br />

is met. Therefore, a session with a timeout value <strong>of</strong> 30 seconds will remain live<br />

for 30 seconds even though the session may have only required two seconds<br />

<strong>of</strong> processing time.<br />

Connection properties for the Sun RPC proxy are configured via Standard<br />

Application Defenses. See “Creating Standard Application Defenses” on page<br />

201.<br />

Usenet News proxy configurations<br />

<strong>Sidewinder</strong> <strong>G2</strong> supports a Network News Transfer Protocol (NNTP) proxy that<br />

allows you to use a Usenet News server at your site. This allows your site to<br />

exchange news with an Internet News provider. (<strong>Sidewinder</strong> <strong>G2</strong> does not run a<br />

news server because <strong>of</strong> the large amount <strong>of</strong> disk space required.)<br />

When you set up a news server at your site, that system must run a Usenet<br />

News package such as C-News/NNTP or InterNet News (INN). You must<br />

arrange for a news “feed” from the site responsible for transferring news to/<br />

from your site. In addition, you need to provide internal users with s<strong>of</strong>tware that<br />

allows them to access the news that your site receives and post their own<br />

articles to newsgroups.<br />

Before you configure a proxy rule for Usenet News proxies, you must specify<br />

which network objects the news information can be transferred to and from.<br />

For information on network objects, see “Creating network objects” on page<br />

139.<br />

Note: You cannot use the <strong>Sidewinder</strong> <strong>G2</strong> to control which newsgroups your<br />

internal users can subscribe or post to—that must be configured in the Usenet<br />

News s<strong>of</strong>tware.<br />

Whether you need Usenet News proxies in one direction or two will depend on<br />

your server configuration, as described below. Normally you will use the NNTP<br />

proxy so that news can be transferred only to and from your feed site.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!