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. WAN optimization Acceleration – Improve end-user experience – Use bandwidth efficiently and effectively Security – Control network access – Block unwanted traffic v2.1www.UDcast.com - UDgateway overview3

4. 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 overview4

5. 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 overview5

6. 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 overview6

7. 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 optimization7

8. 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

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

10. Label + Modifications Full file transferred Changes + Edited file transfer WANcompress Compression (III) UDgateway-WANcompress ® Synchronized v2.110www.UDcast.com - UDgateway WAN optimization

11. 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 optimization11

12. 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 optimization12

13. 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 v2.113www.UDcast.com - UDgateway WAN optimization

14. 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 optimization14

15. 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 v2.115www.UDcast.com - UDgateway WAN optimization

16. 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 v2.116www.UDcast.com - UDgateway WAN optimization

17. 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 v2.117www.UDcast.com - UDgateway WAN optimization

18. 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 optimization18

19. Resetting the dictionaries Reboot Disable / wait for 10 seconds / enable v2.119www.UDcast.com - UDgateway WAN optimization

20. v2.1www.UDcast.com - UDgateway WAN optimization20 Thank you for your attention