1. UDgateway WAN Optimization

2. 1. Why UDgateway? All-in-one solution Value added services – Networking project requirements Optimize IP traffic on constrained links – Enhance user experience – Save bandwidth v2.1www.UDcast.com - UDgateway overview2

3. Compression Quality of Service Security Acceleration Link management Web compression Content distribution … What’s in a UDgateway? v2.1www.UDcast.com - UDgateway overview3 …

4. Compression Quality of Service Security Acceleration WAN optimization v2.1www.UDcast.com - UDgateway overview4 WAN optimization

5. File sharing acceleration Source: UDcast, January 2009 50% 1/3 OK Unacceptable Good Site % Download time (Seg) without UDgateway with UDgateway ADSL 20%40%60%80% Transfer times with UDgateway FTPHTTPCIFSPOP3 Time (s) 6.3x 25.8x 8.6x 24.5x 7.4x 19.9x 4.7x 19.3x Tests done on dedicated 1Mbps/1Mbps Data Rate, Delay 600 ms and word files (3.4 MB)‏ Performance enhancement v2.1www.UDcast.com - UDgateway overview5

6. File sharing acceleration Source: UDcast, January 2009 50% 1/3 OK Unacceptable Good Site % Download time (Seg) without UDgateway with UDgateway ADSL 20%40%60%80% Transfer times with UDgateway FTPHTTPCIFSPOP3 Time (s) 6.3x 25.8x 8.6x 24.5x 7.4x 19.9x 4.7x 19.3x Tests done on dedicated 1Mbps/1Mbps Data Rate, Delay 600 ms and word files (3.4 MB)‏ Performance enhancement v2.1www.UDcast.com - UDgateway overview6

7. WAN optimization Acceleration – Improve end-user experience – Use bandwidth efficiently and effectively Security – Control network access – Block unwanted traffic v2.1www.UDcast.com - UDgateway overview7

8. WAN optimization (cont.) QoS – Control bandwidth usage – Ensure fair bandwidth sharing – Prioritize business critical traffic Compression – Use bandwidth efficiently and effectively – Eliminate redundant traffic – Get extra bandwidth for free v2.1www.UDcast.com - UDgateway overview8

9. File download compression Download time reduction: up to -97% – 3 seconds instead of 1min40s Volume reduction: up to -97% – 3 MB instead of 100 MB Bandwidth efficiency: up to x24 – 24 Mbit/s for the price of 1 Mbit/s v2.1www.UDcast.com - UDgateway overview9

10. Link Management Benefit from multiple WAN links – High-availability – Least Cost Routing – Adapt routing strategy to Applications Users – More links means more bandwidth – Differentiate forward / return links – Multi-ISP links v2.1www.UDcast.com - UDgateway overview10

11. 1.DNS proxy Purpose – Cache DNS responses locally – Deliver responses at LAN speed References – RFC 1034 Domain names - concepts and facilities – RFC 1035 Domain names - implementation and specification v2.1www.UDcast.com - UDgateway WAN optimization11

12. IDU DNS proxy ISP INTERNET DNS WEB www.udcast.com (193.251.10.104) 5) IP request 6) IP reply ping www.udcast.com At least 600 ms saved for same request 1) DNS request: Where is www.udcast.com ? 2) DNS request: Where is www.udcast.com ? 3) DNS reply: www.udcast.com 193.251.10.104 4) DNS reply: 193.251.10.104 DNS v2.112www.UDcast.com - UDgateway WAN optimization

13. 4. WANcompress Purpose: Save bandwidth by eliminating redundancy from network streams Example: – Send e-mail with large attachment – Make some changes – Send again  Only the changes are sent More than 20x acceleration on repetition of same data v2.1www.UDcast.com - UDgateway WAN optimization13

14. WAN On the fly compression File Transfer – first time File saved to disk on both ends Full file transferred WANcompress Compression (I) UDgateway-WANcompress ® v2.1

15. WANcompress Compression (II) WAN Only label reference Synchronized File Transfer – second timeFull file transferred UDgateway-WANcompress ® v2.1

16. Label + Modifications Full file transferred Changes + Edited file transfer WANcompress Compression (III) UDgateway-WANcompress ® Synchronized v2.116www.UDcast.com - UDgateway WAN optimization

17. Benefits for Service providers Get more out of expensive links: – Satellite, WiMAX, Microwave, etc. Put more customers on same infrastructure v2.1www.UDcast.com - UDgateway WAN optimization17

18. Benefits for end-users Get more out of slow or expensive links – GPRS/UMTS, Inmarsat, VSAT, WiMAX, etc. Avoid upgrading link Reduce volume-based charges Avoid Fair Access Policy penalty v2.1www.UDcast.com - UDgateway WAN optimization18

19. WANcompress operation TCP stream level – Independent of file structure WANcompress does not even know what a “file” is – Independent of delivery method Mail attachment, ftp, web download Unencrypted traffic – Before VPN encryption v2.119www.UDcast.com - UDgateway WAN optimization

20. WANcompress operation (cont.) Traffic redundancy – Data protocol headers – Non-cacheable Web objects “nocache” tag, scripts, dynamic pages (PHP, JSP, ASP…) – Collaborative workplace – Software updates Antivirus Windows, Adobe, Firefox, Apple… “The bigger, the better” v2.1www.UDcast.com - UDgateway WAN optimization20

21. WANcompress operation (cont.) Dictionary-based compression: – Compression dictionary Transmitted streams  labels – Decompression dictionary Received streams  labels Transparent to both communicating parties – Fully interoperable with all TCP applications – Lossless compression v2.121www.UDcast.com - UDgateway WAN optimization

22. WANcompress vs. IPcomp Compression scope – IPcomp Only fractions of seconds in traffic history 8 KB block default 1.5 KB in practice – WANcompress Up to days or weeks of traffic history On-disk dictionary : tens of Gigabytes 10 Gigabytes  10 days of traffic at 100 kbit/s average v2.122www.UDcast.com - UDgateway WAN optimization

23. WANcompress security TCP streams are stored on source and destination  confidentiality – Data streams may be encrypted on disk – Only UDgateway that has stored it can decrypt it – Decryption key is destroyed by power-off Exists only in RAM v2.123www.UDcast.com - UDgateway WAN optimization

24. WANcompress reliability Data on source and destination disks out of sync  data integrity – Checksums – When in doubt, uncompressed data is sent v2.1www.UDcast.com - UDgateway WAN optimization24

25. Resetting the dictionaries Reboot Disable / wait for 10 seconds / enable v2.125www.UDcast.com - UDgateway WAN optimization

26. v2.1www.UDcast.com - UDgateway WAN optimization26 Thank you for your attention