本文转自:https://www.cisco.com/c/en/us/td/docs/security/asa/asa98/configuration/vpn/asa-98-vpn-config/webvpn-troubleshooting.html Chapter: Clientless SSL VPN Troubleshooting Chapter Contents Recover from Hosts File Errors When Using Application AccessWebVPN Conditional DebuggingCapture DataProtect Clientless SSL VPN Session Cookies Recover from Hosts File Errors When Using Application Access To prevent hosts file errors that can interfere with Application Access, close the Application Access window properly when you finish using Application Access. To do so, click the close icon. When Application Access terminates abnormally, the hosts file remains in a Clientless SSL VPN-customized state. Clientless SSL VPN checks the state the next time you start Application Access by searching for a hosts.webvpn file. If it finds one, a Backup HOSTS File Found error message appears, and Application Access is temporarily switched off. If Application Acces......Read More>