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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter72 Configuring Clientless SSL VPN
Customizing the Clientless SSL VPN User Experience
Creating the Custom Login Screen File
The following HTML code is used as an example and is the code that displays:
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>New Page 3</title>
<base target="_self">
</head>
<p align="center">
<img border="0" src="/+CSCOU+/cisco_logo.jpg" width="188" height="48"><font face="Snap
ITC" size="6" color="#FF00FF">
</font><font face="Snap ITC" color="#FF00FF" size="7">&nbsp;</font><i><b><font
color="#FF0000" size="7" face="Sylfaen"> SSL VPN Service by the Cisco
ASA5500</font></b></i></p>
<body onload="csco_ShowLoginForm('lform');csco_ShowLanguageSelector('selector')">
<table>
<tr><td colspan=3 height=20 align=right><div id="selector" style="width:
300px"></div></td></tr>
<tr><td></td><td></td><td></td></tr>
<tr>
<td height="379"></td>
<td height="379"></td>
<td align=middle valign=middle>
<div id=lform >
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>Loading...</p>
</div>
</td>
</tr>
<tr>
<td width="251"></td>
<td width="1"></td>
<td align=right valign=right width="800">
<img border="1" src="/+CSCOU+/asa5500.jpg" width="660" height="220" align="middle">
</td></tr>
</table>
The indented code injects the Login form and the Language Selector on the screen. The function
csco_ShowLoginForm('lform') injects the logon form. csco_ShowLanguageSelector('selector')
injects the Language Selector.
Follow these steps to modify your HTML file:
Step1 Name your file logon.inc. When you import the file, the ASA recognizes this filename as the logon
screen.
Step2 Modify the paths of images used by the file to include /+CSCOU+/.
Files that are displayed to remote users before authentication must reside in a specific area of the ASA
cache memory represented by the path /+CSCOU+/. Therefore, the source for each image in the file must
include this path. For example:
src=”/+CSCOU+/asa5520.gif”