ZyXEL Communications P-312 manual 17-1

P312 Broadband Security Gateway

15.3	E-Mail		15-3
15.3.1		What are Alerts?	15-3
15.3.2		What are Logs?	15-4
15.3.3		SMTP Error Messages	15-6
15.3.4		Example E-Mail Log	15-6
15.4	Attack Alert		15-7
15.4.1		Threshold Values:	15-8
15.4.2		Half-Open Sessions	15-8
Chapter 16		Creating Custom Rules	16-1
16.1	Rules Overview		16-1
16.2	Rule Logic Overview		16-1
16.2.1		Rule Checklist	16-1
16.2.2		Security Ramifications	16-2
16.2.3		Key Fields For Configuring Rules	16-2
16.3	Connection Direction		16-3
16.3.1		LAN to WAN Rules	16-3
16.3.2		WAN to LAN Rules	16-3
16.4	Services Supported		16-4
16.5	Rule Summary		16-6
16.5.1		Creating/Editing Firewall Rules	16-8
16.5.2		Source & Destination Addresses	16-10
16.6	Timeout		16-12
16.6.1		Factors Influencing Choices for Timeout Values:	16-12
Chapter 17		Custom Ports	17-1
17.1	Introduction		17-1
17.2	Creating/Editing A Custom Port		17-2
Chapter 18		Logs	18-1
18.1	Log Screen		18-1
Chapter 19		Example Firewall Rules	19-1
19.1	Examples		19-1
19.1.1		Example 1 - Firewall Rule To Allow Web Service From The Internet	19-1
19.1.2		Example 2 – Small Office With Mail, FTP and Web Servers	19-6
19.1.3		Example 3: DHCP Negotiation and Syslog Connection from the Internet	19-11
Chapter 20		Content Filtering	20-1
xiv		Table Of Contents