Software protecting information networks

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Введение…………………………………………………………………………….3
1 The protection of information in computer networks ........................... 7
1.1 Program information encryption networks .... ........................... .... 16
1.2 encryption algorithm Blowfish ...... ... .......................................... ..18
1.3 Use of secure protocol Kerberos ... ... ........................ 20
2 Firewalls as a means of protection of information ... .. ..................... 29
2.1 Identify threats potentsionalnyh network
Company ....................................................................................... ..29
2.2 The organization of security in the enterprise network the choice of methods and means of ........................ .. .................................................................. ..31
2.3 Use of the Kerio WinRoute Firewall ........................... .. ... 38
2.4 Ensuring security in Intranet ............................ ................ ... .44
Заключение………………………………………………………………………...56
Глоссарий………………………………………………………………………….59
List of sources used ................................................... 62
Abbreviations ........................................................................ .66
Appendix A .................. .. ............................................. .. ............ .67
Appendix B .................................. .......................................... .... 68
Appendix ................ ............................................................ .... 69
Appendix D .............................................................................. .70
Appendix E ........................................................................ ... ... ..71