To use Burp with an upstream proxy, go to the Options tab, and under
"upstream proxy server" add a rule with a wildcard (*) as the destination
host, and the relevant proxy details in the other fields. Both HTTP and
HTTPS connections through the proxy are supported. If you have modified any
other settings to try and achieve upstream proxying through other means, it
might be worth restoring default settings first (via the Burp menu).

Hope that helps.

Cheers
PortSwigger

-----Original Message-----
From: listbounce (at) securityfocus (dot) com [email concealed] [mailto:listbounce (at) securityfocus (dot) com [email concealed]] On
Behalf Of learn lids
Sent: 08 April 2010 04:30
To: webappsec (at) securityfocus (dot) com [email concealed]
Subject: Burp Proxy 1.3-Proxy Help

hi all, i am using burp proxy 1.3 to look at a webstie through a http proxy
- http://something.com . the website redirects to https, and then burp gives
the message "Burp proxy error: Unrecognized SSL message, plaintext
connection? "

this seems to be a common java error, and the burp suite documentation did
not have any poiters to resolve this issue. does burp supprot outgoing
http/https proxies at all? if yes or no, what is the best way to use it?

- learner

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