Firewalls For Dummies 2nd Edition phần 5 pdf

... Port NAT-D UDP Any Any 23.23.2. 35 500 Allow NAT-T UDP Any 450 0 23.23.2. 35 450 0 Allow NAT-D UDP Any Any 172.16.1.211 50 0 Allow NAT-T UDP Any Any 172.16.1.211 450 0 Allow Note: The remote-access ... Internal Port Address Protocol Address 23.16.16 .5 UDP Any 192.168.223.22 50 0 23.16.16 .5 UDP Any 192.168.223.22 450 0 Note: The source port can’t be determined for both NAT-D and NAT-...

Ngày tải lên: 14/08/2014, 02:20

... 23.0.1. 65 UDP 50 0 50 0 IKE Input 23.0.2.12 23.0.1. 65 ID 50 Any Any IPSec ESP Input 23.0.2.12 23.0.1. 65 ID 51 Any Any IPSec AH Output 23.0.1. 65 23.0.2.12 UDP 50 0 50 0 IKE Output 23.0.1. 65 23.0.2.12 ID 50 ... Port Internal IP Internal Port Address Protocol Address 23.16.16 .5 UDP 50 0 192.168.223.22 50 0 23.16.16 .5 UDP 450 0 192.168.223.22 450 0 After the static address...

Ngày tải lên: 14/08/2014, 02:20

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Ngày tải lên: 14/08/2014, 02:20

... true. 17 57 0684 Ch12.qxd 3/31/04 2 :51 PM Page 153 Chapter 12: C the Mighty if Command 153 This time, the test is greater than or equal to: Is the number that is entered 5 or more than 5? If the ... deci- sion in your program. ߜ Refer to Chapter 10 for more information about the getchar() function. 17 57 0684 Ch12.qxd 3/31/04 2 :51 PM Page 154 154 Part III: Giving Your Pro...

Ngày tải lên: 12/08/2014, 09:22

... 0011 0001 50 2 32 0011 0010 51 3 33 0011 0011 52 4 34 0011 0100 53 5 35 0011 0101 54 6 36 0011 0110 55 7 37 0011 0111 56 8 38 0011 1000 57 9 39 0011 1001 58 : 3A 0011 1010 59 ; 3B 0011 ... parentheses, 150 selection statements, 148 string comparison, 174 TAXES.C, 155 – 157 test, 150 values and, 1 65 if statement block, 150 – 151 format, 154 – 155 if-else structure def...

Ngày tải lên: 12/08/2014, 09:22

... have changed 250 Hackers have changed 251 You have changed 252 Features of Personal Firewalls 253 Enterprise firewalls versus personal firewalls 254 How to Be Safe on the Internet 258 Personal ... .2 95 Making Internet Access Faster and More Secure 296 Looking under the Hood: How ISA Works 297 Choosing between the Two Editions 301 Preparing for Installation 302 Firewalls For...

Ngày tải lên: 14/08/2014, 02:20

... (port 80) 10.1. 65. 10 Mail server (port 25) 10.1. 65. 12 News server (port 119) 10.1. 65. 15 Firewall (port 80, 25, 119) 23.1.4.12 Internet Figure 4-1: Static inbound translation. 75 Chapter 4: Understanding ... data portion (for example, the HTTP data) contains instructions for how long the data is valid or instructions not to cache the result at all. The information is probably encr...

Ngày tải lên: 14/08/2014, 02:20

... 172.16.1.206 53 Allow DNS TCP Any Any 172.16.1.206 53 Allow* * Connections to TCP 53 are only required for zone transfers where the internal DNS server is the master server for the zone for an external ... IP addresses. If you travel for work and connect from a variety of locations, this configuration won’t work for you. ߜ Enforce authenticated SMTP for outgoing mail: Forcing a...

Ngày tải lên: 14/08/2014, 02:20

... updated information from Symantec’s Web site. Figure 15- 25: General rule to block Windows file sharing. 289 Chapter 15: Configuring Personal Firewalls users alike use the same program, firewalls ... Many personal firewalls have some sort of learning mode in which they offer to add rules for the application that was just blocked at the firewall. 255 Chapter 15: Configuring Personal...

Ngày tải lên: 14/08/2014, 02:20