User manual

Firewall
135
Enter Mail server In Descriptive Name.
Leave Enable and Create Packet Filter Rule checked.
Leave Incoming Interface and Source Address as Any.
Select your Internet connection in Destination Address.
Click Predefined next to Services.
Select E-Mail from Services.
Enter your internal email server’s IP address in To Destination Address.
Click Finish.
Configure mail clients on the Internet with the CyberGuard SG appliance’s Internet IP
address as the server to use for sending (SMTP) and receiving (POP3 or IMAP) mail. If
your CyberGuard SG appliance has a dynamic Internet IP address, consider using a
dynamic DNS server; see Dynamic DNS in the DNS section of the chapter entitled
Network Setup.