18.07.2013 Views

Sidewinder G2 6.1.1 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.1 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.1 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.

Proxy basics<br />

8-4 Configuring Proxies<br />

When to disable the Fast Path Sessions option<br />

In most cases, the Fast Path Sessions option enhances system<br />

performance, and in many <strong>of</strong> these cases the improvement is<br />

significant. However, there are some cases where the Fast Path<br />

Sessions option may negatively affect performance. Large data<br />

transfers on heavily loaded systems, primarily FTP or HTTP traffic, can<br />

overload a system. The <strong>Sidewinder</strong> <strong>G2</strong> will also "throttle" these<br />

connections under very heavy load conditions to prevent them from<br />

taking over the system.<br />

Proxy session limits<br />

There is an upper limit to the number <strong>of</strong> simultaneous sessions for<br />

certain proxy configurations. Table 8-1 provides a summary <strong>of</strong> hard<br />

limits based on per-process resource limits.<br />

Table 8-1. Proxy session limits (hard limits)<br />

Proxy Session Limits<br />

FTP 4000 sessions<br />

t120 1000 sessions<br />

all other TCP 8000 sessions 1<br />

UDP The number <strong>of</strong> ports plus two times the number <strong>of</strong> sessions<br />

must not exceed 16,000. (The maximum number <strong>of</strong> enabled<br />

ports for all services on all burbs must not exceed 8000.)<br />

1 A maximum <strong>of</strong> 16 Telnet sessions are allowed in the "enter destination" or<br />

"authentication" stage.<br />

Tip: Session limits for each proxy can be lowered from the hard limits by editing the<br />

simultaneous_sessions entry in the configuration file (*.conf) for each proxy.

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

Saved successfully!

Ooh no, something went wrong!