Presentation on theme: "The NAT/Firewall Problem! And the benefits of our cure… Prepared for:Summer VON Europe 2003 SIP Forum By: Karl Erik Ståhl President Intertex Data AB Chairman."— Presentation transcript:
Everyone has a connection IP Phone PSTN SIP /PSTN Gateway IP SOHO LAN Business LAN SIP Server IAP XP PIM Firewall/NAT problems! DSL Cable MTU Operator network with NAT NAT Firewall NAT What is the Problem?? SIP is the Protocol for IP Communication Person to Person, BUT IT DOES NOT REACH THE EDGE! SIP does not traverse common NATs and Firewalls! And they are still being installed…
Firewall/NAT problems! Firewall/NAT SIP transparency! Office or home LAN IP Phone SIP Server PSTN SIP /PSTN Gateway Operator network with NAT Internet NAT Firewall NAT Enterprise LAN DSL Cable MTU DMZ inGate SIParator SIP Enabling the Private Networks inGate Firewall IP Phone IX66 IAP
Internet Just Another Internet Service… PSTN SIP /PSTN Gateway DNS SRV DMZ inGate SIParator XP Ingate Linköping LAN IX66 Intertex Stockholm LAN Sweden IX66 FWD Booth #3 USA Sweden IX66 Home Office Users SOHO LAN IX66 XP London Booth #1 Enterprise LAN XP inGate Firewall Booth #2
IP Communications Using IP Networks Intranet IP VPN with IP communications Domestic and global IP communications PBX and PSTN – E.164 resolution Customer Premises PBX PSTN Phone Managed Services Router Vmail OSS SIP Phone WorldCom PSTN Dialing Plans Network GWY Conf PSTN Phone IM IN Enterprise Gateway SIP Routing Firewall SIP Server IP VPN Global IP Comm Intranet IP Comm …other… Many call routing options: Private/Public IP address DNS and DNS SRV records SIP aware NAT/PAT servers Henry Sinnreich 4/10/2002 WorldCom Public IP Network
IP Communications Using IP Networks PBX PSTN Phone Managed Services Router Vmail OSS SIP Phone WorldCom PSTN Dialing Plans Network GWY Conf PSTN Phone IM IN Enterprise Gateway SIP Routing Firewall SIP Server IP VPN Global IP Comm Intranet IP Comm …other… Integration with existing phones SIP Capable Firewall Ingate and Intertex First through SIT Customer Premises No IP PBX Needed! Enhanced Functionality Enterprise LAN WorldCom Public IP Network
Firewall Presence IM Greenwich Edge Proxy DMZ Microsoft Greenwich Home Server: Presence IM Audio Video Data Col. TLS
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