Cortelco C58P 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.

8.3.7.3 Network 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 Introducing C58/C58P VoIP Phone Box ContentsThank you KeypadInput/Output Ports Power switch Input 5V AC, 1APort Port name Description IconDescription Icon IntroductionConnecting the phone Initial Connection and SettingLED Introduction Network Settings Static IP Mode PPPoE ModeDhcp Mode Making a call Basic FunctionsAnswering a call Call DeviceCall Forward Do Not Disturb DNDCall Hold Call WaitingCall transfer Mute10 3-way conference call Multiple-way callCall pickup Advanced FunctionsJoin call Redial / UnredialCall back Click to dialAuto answer Hotline/WarmlinePing Programmable Key ConfigurationMemory Key LineDtmf Other Functions5 URL NoneBan Anonymous Call Auto HanddownBan Outgoing Dial PlanPassword Dial Power LightAuto Redial Call completionScreen Settings Basic SettingPre Dial KeyboardVoice Volume Ring SettingsRing Volume Time & DateGreeting Words Advanced SettingsLanguage GeneralAdvanced Settings MaintenanceService Code NetworkFactory Reset Web ConfigurationIntroduction of configuration Setting via web browserBasic Status Configuration via WEBField Name Explanation WizardStatic IP Quick SIP Settings 1.4 Language Call LogField name Explanation WAN Settings Network WAN ConfigIP Address or name of DSL Server Qos & Vlan Config LAN ConfigPage Field Name Explanation Service Port Dhcp Service TIME&DATE Daylight Saving Time Settings Voip SIP ConfigurationManual Time Settings Field Name Explanation Advanced SIP Settings Codecs SettingsSipinfo Auto SIP Global Settings 3.2 IAX2 Stun Config 3.4 SIP Line Using StunPage Web Interface Explanation Example Dial Peer ExamplesPhone Audio Page Feature Page Page Dial Plan Dial Plan Special Characters Phonebook Tables ContactGroup Option 4.6 Remote Phonebook SettingFunction Key Settings Screen ConfigurationFunction Key Function KeysSoftkeys Programmable Key SettingsAuto Provision Setting Maintenance Auto ProvisionPlug and Play Settings Dhcp Option SettingsPhone Flash Settings 6.2 Syslog TR069 SettingsLevel Name Description Web Capture Syslog SettingsConfig Setting Config SettingField Name Explanation Web Update UpdateTFTP/FTP Update Select File URL of the logo file Access Configuration AccessSecurity WEB Filter RebootWEB Filter Firewall Firewall ConfigurationNetwork Address Translation NAT Application Layer Gateway ALG Settings 7.4 VPN VPN ModeNetwork Address Translation NAT Table NAT Table Option7.5 Security Field Name Explanation Update Security FileLogout Delete Security FileVoice Features SpecificationSpecification Appendix Dtmf  IP PBX  IMS Network Features Post  Http  FTP  Tftp  Https Maintenance and managementDigit-character map table