User's Manual

Configuring the Firewall

Configuring Firewall Rules

Cisco RV 120W Administration Guide 80

Creating a Firewall Rule

To create firewall rules:

STEP 1 Choose F

Firewall

> A

Access Control

> I

IPv4 Rules

STEP 2 Click A

Add

STEP 3 In the F

From Zone

field, choose the source of originating traffic:

•

Trusted (LAN)

—Choose if traffic will originate from the secure LAN.

•

Untrusted (WAN)

—Choose this option to create an inbound rule.

STEP 4 Choose the T

To Zone

to configure the destination of traffic covered by this rule. If

the From Zone is the WAN, the To Zone can be the public DMZ or secure LAN. If

the From Zone is the LAN, then the To Zone can be only the insecure WAN.

STEP 5 Choose the service to allow or block for this rule. Choose A

Any

to allow the rule to

apply to all applications and services, or you can choose a single application to

block:

• AIM (AOL Instant Messenger)

• BGP (Border Gateway Control)

• BOOT_P (Bootstrap Protocol) client

• BOOT_P Server

• CU-SeeMe (videoconferencing) UDP or TCP

• Domain Name System (DNS), UDP or TCP

• Finger

• File Transfer Protocol (FTP)

• Hyptertext Transfer Protocol (HTTP)

• Secure Hypertext Transfer Protocol (HTTPS)

• Internet Control Message Protocol (ICMP) type 3 through 11 or 13

• ICQ (chat)

• Internet Message Access Protocol (IMAP) 2 or 3

• Internet Relay Chat (IRC)