Cabletron Systems E2100 Specifikace Strana 175
- Strana / 233
- Tabulka s obsahem
- ŘEŠENÍ PROBLÉMŮ
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
B
Proxy Server: Squid
Proxy Server: Squid
The following chapter describes how caching web sites assisted by a proxy
server works and what the advantages of using Squid are. The most popular
proxy cache for Linux and UNIX platforms is Squid. We will discuss its con-
figuration, the specifications required to get it running, how to configure the
system to do transparent proxying, how to gather statistics about the cache’s
use with the help of programs like Calamaris and cachemgr, and how to
filter web contents with squidgrd.
What is a Proxy Cache? . . . . . . . . . . . . . . . . . . . . 168
Some Facts About Cache Proxying . . . . . . . . . . . . . . 168
System Requirements . . . . . . . . . . . . . . . . . . . . . 170
Starting Squid . . . . . . . . . . . . . . . . . . . . . . . . . 172
The Configuration File /etc/squid.conf . . . . . . . . . . . 173
Transparent Proxy Configuration . . . . . . . . . . . . . . . 178
Squid and Other Programs . . . . . . . . . . . . . . . . . . 179
More Information on Squid . . . . . . . . . . . . . . . . . . 182
- SuSELinux 1
- FirewallonCD2 1
- Contents 3
- SuSE Linux – Firewall on CD2 5
- The SuSE Firewall on CD 2 9
- Introduction 11
- SuSE Firewall on CD 2 13
- System Requirements 14
- 8 System Requirements 16
- Network Planning 18
- Typical Firewall Setups 20
- SuSE Adminhost for Firewall 23
- Language Selection 24
- Preparing the Hard Disk 26
- Boot Manager Configuration 28
- Setting the root Password 28
- Manual Network Configuration 30
- The User fwadmin for the FAS 38
- Upgrade to the VPN Edition 39
- FAS daemon with the command 40
- 32 Upgrade to the VPN Edition 40
- Firewall Administration 41
- System (FAS) 41
- Logging in as fwadmin 42
- Using the FAS 42
- Creating a New Configuration 44
- Internet 46
- The Setup 47
- The Headquarters in Nuremberg 47
- The Branch in Frankfurt 48
- The Branch in Munich 48
- Network Policies 49
- Configuring the Base Setup 49
- Configuring the Hard Disk 50
- 42 Using the FAS 50
- Network Interfaces 51
- 44 Using the FAS 52
- 46 Using the FAS 54
- 48 Using the FAS 56
- ↵ or click ‘Add’ af 57
- Page 1/5 of the Base Setup 58
- Page 2/5 of the Base Setup 58
- 50 Using the FAS 58
- Page 3/5 of the Base Setup 59
- Page 4/5 of the Base Setup 60
- Page 5/5 of the Base Setup 60
- 52 Using the FAS 60
- IP Filter and NAT 61
- IP Forward 61
- Masquerading 62
- Destination NAT 62
- ICMP to Firewall 63
- IPFilter Configuration 64
- 56 Using the FAS 64
- 58 Using the FAS 66
- Kernel Runtime Setup 67
- System Logging 68
- DNS Forwarder 69
- 62 Using the FAS 70
- FTP Proxy — External 71
- 64 Using the FAS 72
- FTP Proxy — Internal 74
- 68 Using the FAS 76
- Generic TCP Proxy 77
- 70 Using the FAS 78
- 72 Using the FAS 80
- 74 Using the FAS 82
- Defining ACLs 83
- 76 Using the FAS 84
- Arranging ACLs 85
- Content Filter 86
- 78 Using the FAS 86
- and ‘String’ are optional 88
- Access Configuration 89
- Transparent Proxy and Caching 90
- 82 Using the FAS 90
- IPsec VPN Tunnel 92
- General Settings 93
- VPN Connection 94
- Authentication 94
- 86 Using the FAS 94
- IP Filter 95
- 88 Using the FAS 96
- ➝ ‘Create Certificate’: 98
- Page 1/2 IPSec VPN Tunnel 100
- Page 2/2 IPSec VPN Tunnel 100
- 92 Using the FAS 100
- Configuring the Mail Relay 102
- Page 1/2 Mail Relay 104
- Page 2/2 Mail Relay 104
- 96 Using the FAS 104
- Administration via SSH 105
- 98 Using the FAS 106
- Log File Analysis 107
- 100 Log File Analysis 108
- The Log Files 109
- Evaluating the Log Files 110
- The IP Filter Statistics 110
- The Interface Statistics 112
- Mail Statistics 112
- Certificate Management 113
- 106 Certificate Management 114
- Creating a Certificate 115
- Deleting a Cer tificate 115
- Importing Certificates 115
- Exporting Certificates 116
- Saving the Configuration 117
- Editing Configuration Files 117
- Testing the Configuration 118
- Monitoring the Firewall 119
- SuSE Live CD for Firewall 121
- Hardware Requirements 122
- Description 123
- Services on the Firewall 123
- 116 Services on the Firewall 124
- Course of a packet 126
- Packet Descriptions 126
- 118 Services on the Firewall 126
- 120 Services on the Firewall 128
- Security 130
- 122 Services on the Firewall 130
- FTP Proxy 132
- The Configuration Disk 133
- The Configuration Files 134
- 128 The Configuration Disk 136
- Boot Parameters 138
- IPsec Client on Win 139
- Installing the ipsec.exe Tool 141
- Editing ipsec.conf 142
- Closing the Connection 143
- Implementing the Firewall 145
- Booting the Firewall Host 146
- Testing the Firewall 146
- External Testing 148
- Going Online 148
- Troubleshooting 150
- Detecting Attacks 151
- Recognizing an Intrusion 152
- Responding to an Intrusion 152
- 144 Detecting Attacks 152
- External Attacks 154
- Examples: 155
- Recommended Reading 156
- Support, Maintenance 157
- Patches for the Admin CD 158
- Patches for the Live CD 158
- 150 Maintenance 158
- Support and Services 160
- Commercial Support 161
- SuSE Training Program 162
- Feedback 163
- Additional Services 163
- 156 Support and Services 164
- DNS — Domain Name Service 165
- Starting the Name Server BIND 166
- Zone Entry Structure 170
- For More Infor mation 174
- Proxy Server: Squid 175
- What is a Proxy Cache? 176
- Starting Squid 180
- Options for Access Controls 184
- Squid and Other Programs 187
- More Information on Squid 190
- Networ k Security 191
- Masquerading and Firewalls 192
- Network Security 193
- Firewalling Basics 194
- The OpenSSH Package 198
- The ssh Program 198
- Security and Confidentiality 203
- Passwords 206
- YaST or YaST2. To learn 208
- File Race Conditions 208
- DoS — Denial of Service 212
- License Terms 217
- YaST and SuSE Linux 217
- The GNU Gen 221
- GNU General, Public License 222
- No Warranty 227
- 222 Index 230
- 224 Index 232
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