Hali!
Regebben csinaltam ilyet, a kovetkezo fajlt linkeltem be a sites-enabled-be (a peldadat irom le)
<VirtualHost *:80>
ServerName web.valami.hu
ServerAlias web.valami.hu
RewriteEngine On
RewriteRule ^/web/(.*)$ http://192.168.1.20/$1 [L,P]
RewriteRule ^/appl/(.*)$ http://192.168.1.30:8080/$1 [L,P]
ProxyVia on
</VirtualHost>
ServerName es ServerAlias nelkul is mukodik.
Minden jot.