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Secure PIX Firewall 520 Secure PIX Firewall 525 PIX OS. 370 /., 250-280 . . Adaptive Security Algorithm (ASA) , , TCP , . (VPN), .
NetScreen-100 NetScreen-500 ScreenOS, 700 /c. (NetScreen-500) 250 . . NetScreen-100 Ethernet 10/100 /c. 128 . TCP. , .
Firebox 1000 , 10/100 , Linux 1000 . HTTP, SMTP FTP. 95 /. 25 /c .
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, , (Windows UNIX), . FireWall-1 Check Point, Symantec Enterprise Firewall Symantec, CyberGuard Firewall CyberGuard. Firewall, , . , Global Technology Associates Secure Computing .
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. , .
, , , , -1 , VipNet Office Firewall , - -ʻ . -1 , IP-, . -1 MAC- IP- .
VipNet Office Firewall - -ʻ IP- , IP- , , UDP/TCP TCP/IP . - -ʻ , IP-.
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1. .., .. . : . 2001. 672.
2. .., .. . : . 1998. 380.
3. .. . -.:. 1991. - 592.
4. , . / . ... -.: . 1991. -400.
5. .., .., .. : -, 2003. -368.
6. .., .. . : , 2002. 544.
7. ., ., . . .: , 2002, 397.
8. . NOVELL. -.: . 1996. 288.
9. . Novell NetWare. -.: . 1994. -470.
10. .., .. . -.: -. 1996. -288.
11. .., .. web .-.:-.1997. -288.
. 3
1. . 4
1.1. . 4
1.2. . 5
1.3. OSI 7
2. . 10
2.1. . 11
2.2. . 15
2.3. . 18
3. . 19
3.1. . 19
3.2. . 20
4. . 21
4.1. Ethernet 22
4.2. Token Ring. 25
5. Internet TCP/IP.. 26
5.1. . 27
5.2. Internet 31
5.3. TCP/IP.. 33
5.4. Internet 36
6. . 43
6.1. . 45
6.2. . 47
6.3. . 49
6.4. . 53
6.5. Firewall 64
6.6. Firewall 65
. 69
.. 70