1. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. …The Voice Security Company www.securelogix.com

2. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. Introduction… Lee Sutterfield, President – www.securelogix.com World’s Leading Voice Security Company Communications & Information Security Experts Customers:  Financial/Banking  Health Care/Insurance  Retail  Education  Technology/Telco  Federal/Public/Military

3. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. RISKS RISKS Service Availability Service Theft Eaves Dropping Cross Network Attacks Legacy/TDMCampus VoIP IP-Trunking LOW HIGH LOW PBX Attack DISA Abuse VM Toll Fraud Wire Tapping Modem Attacks MEDIUM

4. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. Cross Network Attack from Voice to Data Network Data Network attack through voice network (modems) Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers

5. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Telecom Firewall Protects Voice Network Connection Telecom Firewall Policy Enforcement PSTN Attack Against PBX or Back Door Modem to Data Network Blocked “Last Big Back Door”

6. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. RISKS RISKS Service Availability Service Theft Eaves Dropping Cross Network Attacks Legacy/TDMCampus VoIP IP-Trunking MEDIUM HIGH Viruses DoS Attacks Unauth.Access Packet Sniffers Utilities - VOMIT DISA & VM… VoIP Gateway Cross VLAN Hack Modem Attacks LOW HIGH LOW PBX Attack DISA Abuse VM Toll Fraud Wire Tapping Modem Attacks MEDIUM

7. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. Internet Workstations Modems LAN ISP External Attack PSTN Central Office Voicemail & PBX Telephones Firewall IDS Servers Traditional TDM Voice Network

8. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. Campus VoIP Server Security Internal Data Network device attack against Voice Servers Presence & Voicemail Call Server Cluster Gateway Internet External Attack Firewall IDS Modem PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Gateway Internet External Attack Firewall IDS Modem PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Gateway Internet External Attack Firewall IDS Modem PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Gateway Internet External Attack Firewall IDS Modem PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Gateway Internet External Attack Firewall IDS Modem PSTN Central Office ISP Servers LAN Internal Attack Telephones Workstations Presence & Voicemail Call Server Cluster Gateway Internet External Attack Firewall IDS Modem PSTN Central Office ISP Servers LAN Internal Attack Telephones Workstations Presence & Voicemail Call Server Cluster Gateway Internet External Attack Firewall IDS Modem PSTN Central Office ISP Servers LAN Internal Attack Telephones Workstations Presence & Voicemail Call Server Cluster Gateway Internet External Attack Firewall IDS Modem PSTN Central Office ISP Servers LAN Internal Attack Telephones Workstations Telecom Firewall Visibility Control

9. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. RISKS RISKS Service Availability Service Theft Eaves Dropping Cross Network Attacks Legacy/TDMCampus VoIP IP-Trunking VERY HIGH VoIP Trunk Hacks Cross VLAN Hack Modem Attacks Viruses DoS Attacks Unauth.Access Packet Sniffers Utilities - VOMIT VoIP Gateway QoS Hijacking HIGH MEDIUM HIGH Viruses DoS Attacks Unauth.Access Packet Sniffers Utilities - VOMIT DISA & VM… VoIP Gateway Cross VLAN Hack Modem Attacks LOW HIGH LOW PBX Attack DISA Abuse VM Toll Fraud Wire Tapping Modem Attacks MEDIUM

10. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations IP Trunking / IP Telephony Security Threats External attack through IP Trunks against IP Voice and Data Network Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations

11. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. VoiceMail Presence Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations VoiceMail Presence Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations VoiceMail Presence Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations IP Trunking / IP Telephony Security Threats External Attack against Legacy Systems blocked Telecom Firewall Policy Enforcement

12. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. Telecom Firewall Becomes… Real-Time Mixed Media Firewall Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations Presence & Voicemail Call Server Cluster Internet External Attack Firewall IDS PSTN Central Office ISP Servers LAN Telephones Workstations IP and TDM Attacks Blocked Real-Time Mixed Media Firewall Policy Enforcement

13. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. RISKS RISKS Service Availability Service Theft Eaves Dropping Cross Network Attacks Legacy/TDMCampus VoIP IP-Trunking VERY HIGH VoIP Trunk Hacks Cross VLAN Hack Modem Attacks Viruses DoS Attacks Unauth.Access Packet Sniffers Utilities - VOMIT VoIP Gateway QoS Hijacking HIGH MEDIUM HIGH Viruses DoS Attacks Unauth.Access Packet Sniffers Utilities - VOMIT DISA & VM… VoIP Gateway Cross VLAN Hack Modem Attacks LOW HIGH LOW PBX Attack DISA Abuse VM Toll Fraud Wire Tapping Modem Attacks MEDIUM

14. TeleWall, TeleSweep Secure, TeleAudit, TeleVPN, ETM, TeleView, TeleBridge, TeleIDS, TeleWall NET, SecureLogix, SecureLogix Corporation and the SecureLogix Diamond Emblem are trademarks or registered trademarks of SecureLogix Corporation in the U.S.A. and other countries. All other trademarks mentioned herein are believed to be trademarks of their respective owners. © Copyright 2000-2002 SecureLogix Corporation. All Rights Reserved. U.S. Patent No. US 6,249,575 B1 and US 6,320,948 B1 U.S. and Foreign Patents Pending. Conclusion!! VoIP is NOT READY for enterprise deployment without the deployment of a real-time security overlay technology as has been required for the operation of IP data networks for the last 15 years.