I have a valid certificate issued by Network Solutions that worked fine with Apache 2.0.54. Under Squid 2.5.STABLE10, both MSIE and FireFox report that the certificate was issued by an unknown/untrusted CA. My https_port line is: https_port 443 cert=/etc/squid/secure.lowellma.gov.crt key=/etc/squid/secure.lowellma.gov.key Any help would be greatly appreciated. Ben Hirsch bhirsch@xxxxxxxxxxxx / webmaster@xxxxxxxxxxxx Application Developer City of Lowell, Massachusetts http://www.lowellma.gov/