Cortelco C60 user manual Network Address Translation NAT

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When a connected device tries to access 192.168.1.118, the phone will deny the request because of the out_access rule. Access to any other IP address will be allowed.

Click the Delete button to delete the selected rule.

8.3.7.3Network Address Translation (NAT)

NAT is the process of modifying IP address and port information in transition from a private to a public network. NAT allows the use of one public address to support many private addresses.

DMZ Configuration

Servers in a network most vulnerable to attack are those which provide services to users outside the local network. Many times these computers are placed into their own sub-network to provide more protection to the rest of the local network. This sub-network is called a DMZ (taken from “demilitarized zone”). Computers in the DMZ have limited

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Contents Cortelco Safety Notices Table of Contents Other Functions 1.1 Appendix Box Contents Introducing C60 VoIP PhoneThank you KeypadPage Input/Output Ports Icon IntroductionWAN LANLED Introduction Programmable key LEDs for BLFProgrammable key LEDs for Presence Programmable key LEDs for lineInitial Connection and Setting Connecting the phonePower Indication LED Power Light Enabled Power Indication LED Power Light DisabledNetwork Settings PPPoE ModeStatic IP Mode Dhcp Mode Basic FunctionsMaking a call Call DeviceAnswering a call Do Not Disturb DNDCall Forward Call MethodsCall Hold Call WaitingCall Waiting Tone MuteAdvanced Functions 10 3-way conference callMultiple-way call Call pickupRedial / Unredial Click to dialCall back Auto answerApplication 1 SMSMemo Voice MailProgrammable Key Configuration Memory KeyLine Key EventAuto Handdown Other FunctionsBan Anonymous Call Ban Outgoing Dial PlanDial Peer IntercomPower Light Password DialRing from Headset Hide DtmfBasic Setting Screen SettingsRing Settings KeyboardVoice Volume Time & DateGreeting Words LanguageAdvanced Settings Basic SettingsAdvanced Settings GeneralWeb Configuration Setting via web browser Password ConfigurationConfiguration via WEB Basic StatusField Name Explanation WizardSIP Lines Static IP Quick SIP Settings Call Log LanguageNetwork WAN Config WAN SettingsIP Address or name of DSL Server Qos & Vlan Config LAN ConfigNAT Page Field Name Explanation SIP DscpService Port Dhcp Service TIME&DATE Daylight Saving Time Settings Voip SIP ConfigurationManual Time Settings Field Name Explanation Codecs Settings Advanced SIP SettingsSipinfo Auto SIP Global Settings 3.2 IAX2 Stun Config SIP Line Using Stun Dial PeerPage Dial Peer Examples Web Interface Explanation ExamplePhone Audio Page Feature Page Page Dial Plan Dial Plan Special Characters Contact Phonebook TablesGroup Option Remote Phonebook Setting WEB DialFunction Key Function KeysLine Key Settings/Function Key Settings Screen Configuration Field Name ExplanationProgrammable Key Settings Softkeys Maintenance Auto Provision EXT KeysPage Dhcp Option Settings Auto Provision SettingPlug and Play Settings Phone Flash Settings SyslogLevel Name Description Syslog SettingsWeb Capture Config Setting Config SettingUpdate Field Name Explanation Web UpdateSelect File URL of the logo file Access Access ConfigurationSecurity WEB Filter RebootWEB Filter Firewall Configuration FirewallNetwork Address Translation NAT FTP ALG Application Layer Gateway ALG SettingsPptp ALG VPN Mode 7.4 VPNNetwork Address Translation NAT Table NAT Table OptionLogout SecurityDelete Security File Specification Voice FeaturesAppendix Hardware DNS  Dtmf Auto  SMS IP PBX  IMS Network Features WAN/LAN Maintenance and management  Post  Http  FTP  Tftp  HttpsDigit-character map table