© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 1 Intertex Data AB, Sweden IX66 Internet Gate A Firewall with SIP Support Prepared for:Voice.

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Presentation transcript:

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 1 Intertex Data AB, Sweden IX66 Internet Gate A Firewall with SIP Support Prepared for:Voice On the Net DEMO, Spring 2001 By: Henrik Bergstrom Research and Development Intertex Data AB

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 2 Demo Setup Internet (public addresses) PSTN GSM LAN (private addresses) SIP Home Appliances Controller

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 3 SIP to GSM through Firewall LAN PSTN Gateway Internet PSTN Firewall/NAT SIP Proxy Registrar SIP Server GSM Gateway Dynamic session setup siplab.net SIP forwarding RINGING!

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 4 SIP to SIP through Firewall Internet (public addresses) LAN (private addresses) REGISTER OUTBOUND CALL INBOUND CALL

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 5 SIP Home Appliances Control DO lamp power on Internet (Ethernet) LAN (Ethernet) Internet SIP Server siplab.net SIP Home Appliances Controller SIP

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 6 ”Media Proxy” Setup Internet Non SIP capable firewall DMZ LANWAN Media streams and SIP signalling SIP capable firewall

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 7 SIP Capable Firewall functionality General  Dynamic control of access lists (“holes”), based on SIP and SDP data  Session statefulness, e.g. to track end of call  Understanding of security issues in SIP, i.e. don’t allow everything in the protocol Additional for NAT (Network Addr. Translation)  Rewriting of SIP and SDP data  Media stream translation

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 8 Accessing Protected Devices Firewall Problems: Sessions initiated from outside of the firewall - OK, open port 5060, but… Media streams on dynamically allocated port numbers - Ooops…  ! Even with public IP addresses inside

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 9 Accessing Protected Devices NAT & PAT Problems: Where is the device? - Registration/location function Private IP addresses and ports in SIP messages - Rewrite with globally routable addresses IP address and port of media stream has to be modified - NAT engine has to be dynamically controlled Worse with private IP addresses inside

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 10 Home Appliances Control Control your temperature, refrigerator, alarm, toaster and more… An extension to SIP in progress  See  sip-appliances-framework-01.txt Submitted to OSGI  See

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 11 The Intertex IX66 Internet Gate As Internet Gate ”only” or with integrated ADSL modem  The Intertex IX66 series  OEM as: PowerBit Telia SurfinBird

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 12 The Intertex IX66 Internet Gate A closer look  Firewall & NAT/PAT  SIP Proxy and Registrar  DHCP Server  WEB Server for configuration  Appliance control, LAC via expansion port

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 13 The Intertex IX66 Internet Gate Goodies  Two Ethernet and one USB port  Expansion port, e.g. for appliance control  Smart Card Reader  Upgradeable  And more… Optional ADSL Built-in

© 2001 Intertex Data AB, All Rights Reserved Spring VON 2001 Demo 14 SIP Capable Firewalls Products from Intertex  IX66 for the SOHO market, with or without ADSL  Linux based firewall for larger LANs  Linux based Media Proxy as an add on to existing firewalls. Handles large systems.