Yes, the real webserver sits behind a Cisco CSS which sits behind a Cisco PIX in front of which is the reverse-proxy server. And I do have SSLProxyEngine enabled. Thanks. Peter Escudero -----Original Message----- From: Joe Orton [mailto:jorton@xxxxxxxxxx] Sent: Friday, April 22, 2005 1:23 AM To: Escudero, Peter Louis Cc: users@xxxxxxxxxxxxxxxx Subject: Re: [users@httpd] "Error string not specified yet: proxy: request failed to..." On Thu, Apr 21, 2005 at 07:44:56PM -0400, Escudero, Peter Louis wrote: > I have a SunFire V210 running Solaris 9 (4/04), Apache v2.0.53 & > OpenSSL v0.9.7g, configured as a reverse-proxy for the real webserver, > a Dell PE1750 running Windows Server 2003 & IIS 6.0. In between them > is a Cisco PIX firewall & a Cisco CSS. Regular http works fine, but > secure http gives me the following error: > > [error] (20014)Error string not specified yet: proxy: request failed > to > 172.16.4.101:443 (172.16.4.101) I presume you are talking about using SSL between the reverse proxy and the backend? (generally SSL is not really necessary in such configurations) Do you have "SSLProxyEngine On" configured? joe --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx