I posted this on the Redhat Enterprise Linux 4 (Nahant) list, but I didn't get
sufficient help to solve my problem, so I'm trying here. I apologize in advance
if any of you have seen this before.
I am having a problem with client authentication with apache and openssl. I have
been ordered to get this working, or I will have to be shut down. I think this
is a complex problem (because my web site is somewhat complex, at least for me)
but I will try to simplify it as much as possible.
I am trying to set up a test directory that requires client authentication,
while the parent directory (which is used for web email) does not. I also have
non-encrypted web sites, and that may be what is bollixing up this process, I
don't know.
When I use Internet Explorer to access this test directory, I am successfully
presented with the certificate, and required to provide my client certificate.
After I do so, however, I get a
"The page cannot be displayed. The page is currently unavailable..."
Nothing shows up in /var/log/httpd/ssl_error_log, or in
/var/log/httpd/ssl_access_log. However, /var/log/httpd/webmail_error_log shows this:
[Wed Nov 22 11:00:56 2006] [error] Certificate Verification: Error (20): unable
to get local issuer certificate
[Wed Nov 22 11:00:56 2006] [error] Re-negotiation handshake failed: Not accepted
by client!?
/var/log/httpd/webmail_access_log indicates an apache 103 error:
schwarzschild.usno.navy.mil - - [22/Nov/2006:11:00:55 -0500] "GET /pkitest/
HTTP/1.0" 103 - "-" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;
.NET CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727)"
I've never heard of a 103 error. The apache error codes seem to start in the
200's (http://bignosebird.com/apache/a5.shtml).
Googling comes up with this:
<http://www.mail-archive.com/modssl-users@modssl.org/msg17064.html>
which indicated a number of things, which I tried without success.
Googling on the renegotiation handshake error yielded quite a bit on use of
KeepAlive, but I don't use it, and turning it on didn't help.
There are other, simpler, web sites here at work that only have this client
authentication, and they were able to implement it without trouble. They are,
however, on a fedora core 5 system running apache 2.2.x.
I run httpd-2.0.52-28 and openssl-0.9.7a-43.14 on a RHEL ES 4 system. My
*httpd.conf* contains (in part)
<VirtualHost aa.usno.navy.mil:443>
ServerAdmin [EMAIL PROTECTED]
ServerName aa.usno.navy.mil
ErrorLog /var/log/httpd/webmail_error_log
CustomLog /var/log/httpd/webmail_access_log combined
TransferLog /var/log/httpd/access_log
SSLEngine on
SSLCertificateFile /etc/httpd/conf/ssl.crt/AA_PKI.crt
SSLCertificateKeyFile /etc/httpd/conf/ssl.key/AA_PKI.key
SSLCACertificateFile /etc/httpd/conf/ssl.crt/root.crt
SSLVerifyClient none
<Files ~ "\.(cgi|shtml)$">
SSLOptions +StdEnvVars
</Files>
ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
<Directory "/var/www/cgi-bin">
SSLOptions +StdEnvVars
AllowOverride None
Options None
Order allow,deny
Allow from all
</Directory>
<Directory "/var/www/html/pkitest">
Options Indexes FollowSymLinks MultiViews Includes
AllowOverride None
Order allow,deny
Allow from all
SSLRequireSSL
SSLVerifyClient require
SSLVerifyDepth 10
</Directory>
SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown \
downgrade-1.0 force-response-1.0
CustomLog /etc/httpd/logs/ssl_request_log "%t %h %{SSL_PROTOCOL}x \
%{SSL_CIPHER}x \"%r\" %b"
DocumentRoot /var/www/html
<Directory "/var/www">
Options -Indexes FollowSymLinks MultiViews Includes
AllowOverride None
Order allow,deny
Allow from all
</Directory>
Alias /webmail /usr/share/squirrelmail
</VirtualHost>
My *ssl.conf* contains
LoadModule ssl_module modules/mod_ssl.so
Listen 443
AddType application/x-x509-ca-cert .crt
AddType application/x-pkcs7-crl .crl
SSLPassPhraseDialog builtin
SSLSessionCache shmcb:/var/cache/mod_ssl/scache(512000)
SSLSessionCacheTimeout 300
SSLMutex default
SSLRandomSeed startup file:/dev/urandom 256
SSLRandomSeed connect builtin
SSLCryptoDevice builtin
<VirtualHost _default_:443>
ServerName aa.usno.navy.mil:443
ServerAdmin [EMAIL PROTECTED]
RewriteEngine on
RewriteRule ^https://aa/$ https://aa.usno.navy.mil/
ErrorLog logs/ssl_error_log
TransferLog logs/ssl_access_log
LogLevel warn
SSLEngine on
SSLProtocol all -SSLv2
SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP
SSLCertificateFile /etc/httpd/conf/ssl.crt/AA_PKI.crt
SSLCertificateKeyFile /etc/httpd/conf/ssl.key/AA_PKI.key
SSLCACertificateFile /etc/httpd/conf/ssl.crt/root.crt
SSLCACertificatePath /etc/httpd/conf/ssl.crt
SSLVerifyClient optional
SSLVerifyDepth 10
<Files ~ "\.(cgi|shtml|phtml|php3?)$">
SSLOptions +StdEnvVars
</Files>
<Directory "/var/www/cgi-bin">
SSLOptions +StdEnvVars
</Directory>
SetEnvIf User-Agent ".*MSIE.*" \
nokeepalive ssl-unclean-shutdown \
downgrade-1.0 force-response-1.0
CustomLog logs/ssl_request_log \
"%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"
</VirtualHost>
Can anyone help?
TIA,
Bill Tangren
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