Hello:
I suppose that you have your server abc.com properly configured. To make what you want you should use mod_proxy
1) Uncomment these lines from yout httpd.conf file:
LoadModule proxy_module libexec/libproxy.so
AddModule mod_proxy.c
<IfModule mod_proxy.c>
ProxyRequests On
#
<Directory proxy:*>
Order deny,allow
# Deny from all
Allow from all
</Directory>
# To connect to the "inside" java servlet server from an outside aws,
# uncomment the following and modify as required.
#RewriteEngine on
#RewriteLog "/tmp/rewrite.log"
#RewriteLogLevel 3
#RewriteRule ^/servlet(.*)$
[P]
#
# Enable/disable the handling of HTTP/1.1 "Via:" headers.
) # ("Full" adds the server version; "Block" removes all outgoing Via: header
# Set to one of: Off | On | Full | Block
#
#ProxyVia On
#
# To enable the cache as well, edit and uncomment the following lines:
# (no cacheing without CacheRoot)
#
#CacheRoot "/opt/vaultWS/install/proxy"
#CacheSize 5
#CacheGcInterval 4
#CacheMaxExpire 24
#CacheLastModifiedFactor 0.1
#CacheDefaultExpire 1
#NoCache a_domain.com another_domain.edu joes.garage_sale.com
</IfModule>
2)Use the ProxyPass directive
ProxyPass /
Regards.