Forbidden - You don't have permission to access “foo” on this server

[eluser]edidiway[/eluser]
my .htaccess is like this

Code:

RewriteEngine on
RewriteCond $1 !^(index\.php|resources|robots\.txt)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L,QSA]

sorry my problem is not about cURL, but the scenario is like this

1. I open link : http://www.edidiway.com/rinnai/admin/ser..._edit/15/1

2. There are title(textbox) and map(textarea) in the form

3. I fill the title and map field with "test" word and click Update. It run well.

4. But if I fill the map(textarea) with the true google map embed code like this :
"<iframe width="595" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="https://maps.google.co.id/maps?
f=q&source=s_q&hl=id&geocode;=&q=jalan+haji+agus+salim,+malang&
aq;=&sll=-7.781568,110.364053&sspn=0.012161,0.01929&
ie=UTF8&hq;=&hnear=Jalan+Kyai+Haji+Agus+Salim,+Malang,+Jawa+Timur&
t=m&z=14&ll=-7.983847,112.632222&output=embed"&gt;&lt;/iframe><br /><small><a href="https://maps.google.co.id/maps?f=q&source=embed&hl=id&geocode;=&q=jalan+haji+agus+salim,+malang&
aq;=&sll=-7.781568,110.364053&
sspn=0.012161,0.01929&ie=UTF8&
hq;=&hnear=Jalan+Kyai+Haji+Agus+Salim,+Malang,+Jawa+Timur&t=m&z=14&
ll=-7.983847,112.632222">Lihat Peta Lebih Besar</a></small>"
Then I click update button. I get error like this :
Forbidden
You don't have permission to access /rinnai/admin/services/service_edit/15/1 on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Please help if you have any solution. thanks.