Raritan PCS20 Guia do Utilizador descarregar pdf (Página 61)

Chapter 5: Using the Web Interface

Change the Default Policy

Onceenabled,thefirewallhasadefaultpolicybuiltinthatacceptstraffic

fromallIPaddresses.ThismeansanyIPaddressesnotdroppedbya

specificrulewillbepermittedtoaccesstheDominionPX.Youcan

changethedefaultpolicytoDROP,inwhichcasetrafficfromallIP

addre

sseswillbedroppedexcepttrafficallowedbyaspecificACCEPT

rule.

Tochangethedefaultpolicy:

1. ChooseDeviceSettings‐‐>Security.TheSecuritySettingswindow

appears.ThepanelattheupperrightislabeledIPAccessControl.

Thiscontrolsthefirewall.

2. MakesurethecheckboxlabeledEnableIPAcc

essControlis

checked.

3. ThedefaultpolicyisshownintheDefaultPolicyfield(refertothe

figureshownabove).Tochangeit,selectthepolicyyouwantfrom

thedrop‐downlistinthefield.

4. ClickApply.Thenewdefaultpolicyisapplied.

Create Firewall Rules

FirewallrulesacceptordroptrafficintendedfortheDominionPX,based

ontheIPaddressofthehostsendingthetraffic.Whencreatingfirewall

rules,keepthefollowinginmind:

• Ruleorder Theorderoftherulesisimportant.Whentrafficreaches

theDominionPX,therulesareexecutedinnumericalor

der.Thefirst

rulethatmatchestheIPaddressdetermineswhetherthetrafficis

acceptedordropped.AnysubsequentrulesmatchingtheIPaddress

havenoeffectonthetraffic

• Subnetmask WhentypingtheIPaddress,youMUSTspecify

boththeaddressandasubnetmask.Forexample,tospecifyasi

ngle

addressinaClassCnetwork,usethisformat:

x.x.x.x/24

where/24=asubnetmaskof255.255.255.0.Tospecifyanentire

subnetorrangeofaddresses,changethesubnetmaskaccordingly.

Tocreatefirewallrules:

1. ChooseDeviceSettings‐‐>Security.TheSecuritySettingswindow

ppears.ThepanelattheupperrightislabeledIPAccessControl.

Thiscontrolsthefirewall.

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Raritan PCS20 Guia do Utilizador Página 61