hack proofing linux a Guide to Open Source Security phần 3 pot

... scans.www.syngress.comFigure 3. 19 Viewing a Small LAN in Cheops 138 _linux_ 03 6/20/01 9 :36 AM Page 156System Scanning and Probing • Chapter 3 141application, such as Cheops or an IDS to generate a network map. Seelater ... 6/20/01 9 :35 AM Page 124152 Chapter 3 • System Scanning and Probing■The ability to add an entire IP network or DNS domain to the map,and then have Cheops automatically add new hosts to the map■The ... Underground…Continued 138 _linux_ 03 6/20/01 9 :36 AM Page 159140 Chapter 3 • System Scanning and Probing■-D This option allows you to specify several additional hosts who willappear as originators of the scan. Hackers...

hack proofing linux a Guide to Open Source Security phần 1 docx

... to Open Source Security ™1 YEAR UPGRADEBUYER PROTECTION PLAN Linux: A Guide to Open Source Security The Only Way to Stop a Hacker Is to Think Like OneJames StangerPatrick T. Lane 138 _linux_ FM ... One-way encryp-tion is also used to read a ﬁle and then create a hash of that ﬁle.Theresulting hash value is said to be mathematically unrecoverable.You should understand that in regard to networking, ... such as IBM, Compaq, and Intel. 138 _linux_ FM 6/20/01 9:29 AM Page viii14 Chapter 1 • Introduction to Open Source Security PacketstormPacketstorm is speciﬁcally devoted to security, and has an...

hack proofing linux a Guide to Open Source Security phần 2 docx

... Bastille is written speciﬁcally to Red Hat Linux and Mandrake Linux. The speciﬁc Red Hat/Mandrake content has beengeneralized, and hard-code ﬁlenames are now represented as variables.These variables ... down-load and install the security upgrades to avoid denial-of-service (DoS)and intrusion attacks that can result from these weaknesses. For example, a security update can be downloaded for a vulnerability ... ﬁle, an e-mail is automatically sent to the administrator, indicatingthat an unauthorized user is accessing the system.Once a user logs in to sudo, a ticket is issued that is valid by default...

hack proofing linux a Guide to Open Source Security phần 4 pdf

... creates its database, it is said to enter databaseinitialization mode.5. You can then set Tripwire to rescan these ﬁles and compare their signa-tures to the signatures stored in the database.This ... generally extends your logging capability by placing additional information into a log ﬁle or into a database. Alerting An IDS often has the ability to send alert messages to the network administrator ... the database on a different device than the hard drive is a good idea.The ﬁrst thing a reasonably talented hacker will do afterobtaining root is ﬁnd and erase the database. In the past, many...

hack proofing linux a Guide to Open Source Security phần 5 docx

... Snort’s analysisfeature is able to read the contents of the captured packets and theninform you about any attacks waged against your network.; Snort is able to automatically detect attacks based ... directories, and databases.; An IDS can act as a supplement to a ﬁrewall, because it can help youmonitor trafﬁc on the internal network. Sometimes it may be useful to place an IDS application ... keep appearing in reports unless you update your database.Database update mode allows you to update the database so that it nowww.syngress.com 138 _linux_ 04 6/20/01 9 :38 AM Page 255274 Chapter...

hack proofing linux a Guide to Open Source Security phần 6 pptx

... and /var/kerberos/krb5kdc/kdc.acl ﬁles to reﬂect your Kerberosrealm and DNS domain names.You must then add an administrative user, as wellas additional principals, to the database.Using kadmin.localBecause ... klist, andkdestroy applications, because you can use it to view, delete, and obtaincredentials.www.syngress.com 138 _linux_ 06 6/20/01 9: 43 AM Page 33 3 36 4 Chapter 7 • Avoiding Snifﬁng Attacks ... a Kerberos administrator uses the kadmin pro-gram to add a principal to the database. Note that the ticket does not actuallycontain the password. It is only signed by a password, which creates...

hack proofing linux a Guide to Open Source Security phần 7 docx

... RedHat Package Manager (RPM) packages are already installed (you may need to update them later in this section). To check if an RPM is installed, enter rpm -qa | grep rpm_name .To install an RPM, ... time and trouble by acquiringFreeS/WAN through one of these alternate sources.Some available script sets are designed to allow you to manage ﬁrewallsthat also serve as FreeS/WAN IPSec gateways.You ... following if Apache is installed:apache-manual-1 .3. 12-25apache-1 .3. 12-25apache-devel-1 .3. 12-25www.syngress.com 138 _linux_ 08 6/20/01 9:46 AM Page 421440 Chapter 8 • Creating Virtual Private Networksbecause...

hack proofing linux a Guide to Open Source Security phần 8 doc

... ﬁrewall can take action. Some actions theﬁrewall can take may include automatic ﬁrewall reconﬁguration andautomatic alerts.Exercise: Using Firestarter to Create a Personal Firewall1. Make ... Implementing a Firewall with Ipchains and IptablesUsing and Obtaining AutomatedFirewall Scripts and Graphical Firewall UtilitiesSeveral attempts have been made to automate the process of creating a ... scans through stateful inspection,which is basically a way for the ﬁrewall to maintain and scan its owndynamic database. If this database senses a number of ports that havebeen scanned in a...

hack proofing linux a Guide to Open Source Security phần 9 docx

... rules database One of the common moves by a hacker is to alter the rules database in subtle ways that make it easier for thehacker to gain access to the network. Check your rules and comparethem ... Frequently Asked QuestionsChapter 115 43 138 _linux_ 11 6/20/01 9:51 AM Page 5 43 Maintaining Firewalls • Chapter 11 549employee morale. Make sure that upper management understands theramiﬁcations of any ... problems, because it will require you to ensure that this daemon is not sub-ject to bugs that can cause a security problem. Any daemon, such as Cron, thatacts automatically can cause problems...

hack proofing linux a Guide to Open Source Security phần 10 pps

... 30 6, 30 9opiepassword command and, 30 5, 30 6, 30 7 30 8OTP via FTP and, 30 6, 31 8 31 9password format, 30 8, 30 9response generation, 30 9, 31 3, 31 4 31 5troubleshooting, 30 7, 34 8uninstalling, 31 2user ... firewall-related, 549make command, 11makefiles, tarball, 10, 11Makinen,Tuomo, 147malware, open source software as, 8–9man-in-the middle attacks, 30 1 30 2, 30 3management, communicating firewall ... for, 35 4 35 5, 36 7, 36 8 37 0OpenSSH and, 36 1 36 7packet sniffing over unsecured networks and, 35 5 35 9Secure Shell (SSH) and, 36 7 36 8, 37 1 38 1trying to capture encrypted traffic, 38 1 38 4Virtual...

Xem thêm

Từ khóa: a guide to engineering experiences a guide to modern databases a guide to xml import a guide to c programming paul kelly pdf designing games a guide to engineering experiences pdf designing games a guide to engineering experiences Nghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thống Nghiên cứu tổ hợp chất chỉ điểm sinh học vWF, VCAM 1, MCP 1, d dimer trong chẩn đoán và tiên lượng nhồi máu não cấp Một số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTP Nghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THz đề thi thử THPTQG 2019 toán THPT chuyên thái bình lần 2 có lời giải Biện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọ Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN SLIDE Trả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Nghiên cứu về mô hình thống kê học sâu và ứng dụng trong nhận dạng chữ viết tay hạn chế Nghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000 Thiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khí BT Tieng anh 6 UNIT 2 Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vật Nguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật Đổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt nam