Kerio Connect - Administrators Guide - Kerio Software Archive
Kerio Connect - Administrators Guide - Kerio Software Archive
Kerio Connect - Administrators Guide - Kerio Software Archive
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Securing <strong>Kerio</strong> <strong>Connect</strong>Issues to address• Restrict communication on firewall to necessary IP addresses and ports• Create strong passwords policy• Configure security policy• Configure SMTP server• Use antispam and antivirus• Enable DKIM signature• Enable the sender anti-spoofing protectionConfiguring your firewallIf you install <strong>Kerio</strong> <strong>Connect</strong> in the local network behind a firewall, map the following ports:Service (default port)Incoming connectionSMTP (25)allowSMTPS (465)allowSMTP Submission (587) allowPOP3 (110)denyPOP3S (995)allowIMAP (143)denyIMAPS (993)allowNNTP (119)denyNNTPS (563)allowLDAP (389)denyLDAPS (636)allowHTTP (80, 4040, 8800) denyHTTPS (443, 4040, 8443) allowTable 1Services to be allowed on the firewall97
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