comodo antivirus causing ssl message private connection

#COMODO ANTIVIRUS CAUSING SSL MESSAGE PRIVATE CONNECTION OFFLINE#

Domains allow-listed in the Security Policy settings.Go to the application object on the Forwarding Rules > Applications page to check if an application is interceptable. (outbound SSL Inspection only) Applications marked as not interceptable in the application object properties.Traffic falling into one of the following three categories is exempt from SSL Inspection: Depending on the fail close or fail open policies, SSL connections are either blocked or allowed when the revocation check fails due to operational reasons, such as an unreachable OCSP server. If an error occurs during the revocation check, it is repeated after the configured Revocation Fail Retry Interval ( Assigned Services > Firewall > Security Policy > Enable SSL Inspection > Advanced). To reduce the load on the OCSP or CRL servers, the revocation check is done either once per 24h period, or immediately after an SSL Inspection configuration change. The first revocation check that returns a valid result is used.

#COMODO ANTIVIRUS CAUSING SSL MESSAGE PRIVATE CONNECTION OFFLINE#

OCSP stapling is an offline check for OCSP and CRL, the firewall must be online. To ensure that certificates are not treated as valid that have been revoked before their expiration date, the firewall queries the revocation status of the certificate in the following order: Since clients behind a firewall using SSL Inspection cannot complete their own revocation check, the firewall handles the revocation check during the SSL Inspection process. The openSSL version is listed in the Firewall/SSL log when log verbosity is set to info in the advanced SSL Inspection setting in the Security Policy settings. The syntax of the cipher string may have to be changed if the underlying openSSL version has changed during the update. Use the syntax compatible with the OpenSSL version used by the firewall. It is possible to modify the default openSSL cipher string (LOW, MEDIUM, and HIGH) by appending your own openSSL-compatible string. If it is an outgoing HTTPS connection, the client is redirected to a block page. If needed, the admin can extend the cipher sets to keep up-to-date with the latest security vulnerabilities.Ĭonnections that do not meet the requirements set in the SSL Inspection policy object are blocked by the firewall.

The ciphers included in the presets are defined by the openSSL version on the firewall. Three preset cipher sets (HIGH, MEDIUM, and LOW) are available. By using different SSL Inspection policy objects, traffic for legacy applications without support for the newest TLS version can continue to be used without having to reduce the more stringent security policy used for all other SSL/TLS connections. SSL Inspection on the firewall allows the admin to define the minimum supported SSL/TLS version and a suite of allowed ciphers on a per-access-rule basis. For example, an SSL connection from a client that only supports SSLv3, while the server on the other side of the firewall supports TLS 1.2, will result in an SSLv3 connection to the firewall and a TLS 1.2 connection from the firewall to the server, if the settings of the SSL Inspection policy allow these connections. The negotiated settings for the SSL/TLS connection between the firewall and the client and the connection between the firewall and the server always strive to use the most secure cipher and TLS/SSL version possible, which can result in different encryption settings for each connection. The ciphers and the SSL/TLS version for the SSL or TLS connection are negotiated between the client and the firewall and the firewall and the server.

Not supported are SSL connections that require client certificate authentication.Įnforce Ciphers and Minimum SSL/TLS Version SSL Inspection is supported for Pass, Map, and Dst NAT access rules. For outbound SSL Inspection, the firewall can also handle SSL validation errors, depending on the SSL error policy assigned to the matching access rule of the SSL/TLS session. Using SSL Inspection allows the admin to enforce SSL/TLS security at the firewall by blocking outdated ciphers or refusing connections attempting to use outdated SSL versions. SSL Inspection decrypts both SSL and TLS connections so the firewall can allow Application Control features, such as the Virus Scanner and ATP, to scan traffic that would otherwise not be visible to the firewall service.

Comodo antivirus causing ssl message private connection