Cisco Cisco Web Security Appliance S360 User Guide

ERR_BROWSER

Security: Browser

Block page that is displayed when the 
transaction request comes from an application 
that has been identified to be compromised by 
malware or spyware.

Based on your organization’s Access Policies, 
requests from your computer have been 
blocked because it has been determined to be a 
security threat to the organization’s network. 
Your browser may have been compromised by 
a malware/spyware agent identified as 
“<malware name>”.

Please contact <contact name> <email 
address> and provide the codes shown below.

If you are using a non-standard browser and 
believe it has been misclassified, use the button 
below to report this misclassification.

ERR_BROWSER_CUSTO
M

Policy: Browser

Block page that is displayed when the 
transaction request comes from a blocked user 
agent.

Based on your organization’s Access Policies, 
requests from your browser have been blocked. 
This browser “<browser type>” is not 
permitted due to potential security risks.

ERR_CERT_INVALID

Invalid Certificate

Block page that is displayed when the 
requested HTTPS site uses an invalid 
certificate.

A secure session cannot be established because 
the site <hostname> provided an invalid 
certificate.

ERR_CONTINUE_UNAC
KNOWLEDGED

Policy Acknowledgment

Warning page that is displayed when the user 
requests a site that is in a custom URL category 
that is assigned the Warn action. Users can 
click an acknowledgment link to continue to 
the originally requested site.

You are trying to visit a web page that falls 
under the URL Category <URL category>. By 
clicking the link below, you acknowledge that 
you have read and agree with the 
organization’s policies that govern the usage of 
the Internet for this type of content. Data about 
your browsing behavior may be monitored and 
recorded. You will be periodically asked to 
acknowledge this statement for continued 
access to this kind of web page.

Click here to accept this statement and access 
the Internet.

ERR_DNS_FAIL

DNS Failure

Error page that is displayed when the requested 
URL contains an invalid domain name.

The hostname resolution (DNS lookup) for this 
hostname <hostname> has failed. The Internet 
address may be misspelled or obsolete, the host 
<hostname> may be temporarily unavailable, 
or the DNS server may be unresponsive.

Please check the spelling of the Internet 
address entered. If it is correct, try this request 
later.

ERR_EXPECTATION_FA
ILED

Expectation Failed

Error page that is displayed when the 
transaction request triggers the HTTP 417 
“Expectation Failed” response.

The system cannot process the request for this 
site <URL>. A non-standard browser may have 
generated an invalid HTTP request.

If using a standard browser, please retry the 
request.