User guide

Chapter 9: Security
97
Enable the Firewall
Toenablethefirewall:
1. ChooseSecurity>Firewall.TheFirewallScreenappears.The
FirewallscreendisplaystheexistingIPTablesrules.

2. ClickthecheckboxlabeledEnableFirewall.
3. ClickOK.
Note:WhenyouenableIPforwardingforDualLANunits,use
IPTablesrulestocreatepoliciesfortrafficbeingforwardedbetween
LANinterfaces
Add an IPTables Rule
ToaddanIPTablesrule:
1. ChooseSecurity>Firewall.TheFirewallScreenappears.The
firewallscreendisplaysthedefaultIPTablesrules.
2. GototheAdd/DeleteIPTablesRulefieldandenterarule.
3. ClickApply,andthenclickSave.Theruleisdisplayedonthescreen.
4. Deletesomeoral
lofthede
faultrulesifyouchooseto.
5. Addnewrulesifyouchooseto.