system and network monitoring tools
Hands-On Ethical Hacking and Network Defense
... DOES THE WEB APPLICATION REQUIRE AUTHENTICATION OF THE USER?Many Web applications require another server authenticate usersExamine how information is passed between the two serversEncrypted channelsVerify that logon and password information is stored on secure placesAuthentication servers introduce a second target443734APPLICATION VULNERABILITIES COUNTERMEASURES (CONTINUED)Top10 Web application vulnerabilities (continued)Remote administration flawsAttacker can gain access to the Web server through the remote administration interfaceWeb and application server misconfigurationAny Web server software out of the box is usually vulnerable to attackDefault accounts and passwordsOverly informative error messages3216WEB FORMSUse the <form> element or tag in an HTML documentAllows customer to submit information to the Web serverWeb servers process information from a Web form by using a Web applicationEasy way for attackers to intercept data that users submit to a Web server7APPLICATION VULNERABILITIES COUNTERMEASURESOpen Web Application Security Project (OWASP)Open, notforprofit organization dedicated to finding and fighting vulnerabilities in Web applicationsPublishes the Ten Most Critical Web Application Security VulnerabilitiesTop10 Web application vulnerabilitiesUnvalidated parametersHTTP requests are not validated by the Web serverBroken access controlDevelopers implement access controls but fail to test them properly29USING SCRIPTING LANGUAGESDynamic Web pages can be developed using scripting languagesVBScriptJavaScriptPHP18OPEN DATABASE CONNECTIVITY (ODBC) (CONTINUED)ODBC definesStandardized representation of data typesA library of ODBC functionsStandard methods of connecting to and logging on to a DBMS24WEB APPLICATION COMPONENTSStatic Web pagesCreated using HTMLDynamic Web pagesNeed special components<form> tagsCommon Gateway Interface (CGI)Active Server Pages (ASP)PHPColdFusionScripting languagesDatabase connectors6APACHE WEB SERVERTomcat Apache is another Web Server programTomcat Apache hosts anywhere from 50% to 60% of all Web sitesAdvantagesWorks on just about any *NIX and Windows platformIt is freeRequires Java 2 Standard Runtime Environment (J2SE, version 5.0)15ON WHAT PLATFORM WAS THE WEB APPLICATION DEVELOPED?Several different platforms and technologies can be used to develop Web applicationsAttacks differ depending on the platform and technology used to develop the applicationFootprinting is used to find out as much information as possible about a target system The more you know about a system the easier it is to gather information about its vulnerabilities45OPEN DATABASE CONNECTIVITY (ODBC)Standard database access method developed by the SQL Access GroupODBC interface allows an application to accessData stored in a database management system Any system that understands and can issue ODBC commandsInteroperability among backend DBMS is a key feature of the ODBC interface2348UNDERSTANDING WEB APPLICATIONSIt is nearly impossible to write a program without bugsSome bugs create security vulnerabilitiesWeb applications also have bugsWeb applications have a larger user base than standalone applicationsBugs are a bigger problem for Web applications5DOES THE WEB APPLICATION CONNECT TO A BACKEND DATABASE SERVER? (CONTINUED)Basic testing should look forWhether you can enter text with punctuation marksWhether you can enter a single quotation mark followed by any SQL keywordsWhether you can get any sort of database error when attempting to inject SQL43DOES THE WEB APPLICATION USE DYNAMIC WEB PAGES?Static Web pages do not create a security environmentIIS attack exampleSubmitting a specially formatted URL to the attacked Web serverIIS does not correctly parse the URL informationAttackers could launch a Unicode exploithttp://www.nopatchiss.com/scripts/ ... %255cwinnt /system3 2/cmd.exe?/c+dir+cAttacker can even install a Trojan program419OBJECT LINKING AND EMBEDDING DATABASE (OLE DB)OLE DB is a set of interfacesEnables applications to access data stored in a DBMSDeveloped by MicrosoftDesigned to be faster, more efficient, and more stable than ODBCOLE DB relies on connection stringsDifferent providers can be used with OLE DB depending on the DBMS to which you want to connect2517 TOOLS OF WEB ATTACKERS AND SECURITY TESTERSChoose the right tools for the jobAttackers look for tools that enable them to attack the system They choose their tools based on the vulnerabilities found on a target system or application463Hands-On ... DOES THE WEB APPLICATION REQUIRE AUTHENTICATION OF THE USER?Many Web applications require another server authenticate usersExamine how information is passed between the two serversEncrypted channelsVerify that logon and password information is stored on secure placesAuthentication servers introduce a second target443734APPLICATION VULNERABILITIES COUNTERMEASURES (CONTINUED)Top10 Web application vulnerabilities (continued)Remote administration flawsAttacker can gain access to the Web server through the remote administration interfaceWeb and application server misconfigurationAny Web server software out of the box is usually vulnerable to attackDefault accounts and passwordsOverly informative error messages3216WEB FORMSUse the <form> element or tag in an HTML documentAllows customer to submit information to the Web serverWeb servers process information from a Web form by using a Web applicationEasy way for attackers to intercept data that users submit to a Web server7APPLICATION VULNERABILITIES COUNTERMEASURESOpen Web Application Security Project (OWASP)Open, notforprofit organization dedicated to finding and fighting vulnerabilities in Web applicationsPublishes the Ten Most Critical Web Application Security VulnerabilitiesTop10 Web application vulnerabilitiesUnvalidated parametersHTTP requests are not validated by the Web serverBroken access controlDevelopers implement access controls but fail to test them properly29USING SCRIPTING LANGUAGESDynamic Web pages can be developed using scripting languagesVBScriptJavaScriptPHP18OPEN DATABASE CONNECTIVITY (ODBC) (CONTINUED)ODBC definesStandardized representation of data typesA library of ODBC functionsStandard methods of connecting to and logging on to a DBMS24WEB APPLICATION COMPONENTSStatic Web pagesCreated using HTMLDynamic Web pagesNeed special components<form> tagsCommon Gateway Interface (CGI)Active Server Pages (ASP)PHPColdFusionScripting languagesDatabase connectors6APACHE WEB SERVERTomcat Apache is another Web Server programTomcat Apache hosts anywhere from 50% to 60% of all Web sitesAdvantagesWorks on just about any *NIX and Windows platformIt is freeRequires Java 2 Standard Runtime Environment (J2SE, version 5.0)15ON WHAT PLATFORM WAS THE WEB APPLICATION DEVELOPED?Several different platforms and technologies can be used to develop Web applicationsAttacks differ depending on the platform and technology used to develop the applicationFootprinting is used to find out as much information as possible about a target system The more you know about a system the easier it is to gather information about its vulnerabilities45OPEN DATABASE CONNECTIVITY (ODBC)Standard database access method developed by the SQL Access GroupODBC interface allows an application to accessData stored in a database management system Any system that understands and can issue ODBC commandsInteroperability among backend DBMS is a key feature of the ODBC interface2348UNDERSTANDING WEB APPLICATIONSIt is nearly impossible to write a program without bugsSome bugs create security vulnerabilitiesWeb applications also have bugsWeb applications have a larger user base than standalone applicationsBugs are a bigger problem for Web applications5DOES THE WEB APPLICATION CONNECT TO A BACKEND DATABASE SERVER? (CONTINUED)Basic testing should look forWhether you can enter text with punctuation marksWhether you can enter a single quotation mark followed by any SQL keywordsWhether you can get any sort of database error when attempting to inject SQL43DOES THE WEB APPLICATION USE DYNAMIC WEB PAGES?Static Web pages do not create a security environmentIIS attack exampleSubmitting a specially formatted URL to the attacked Web serverIIS does not correctly parse the URL informationAttackers could launch a Unicode exploithttp://www.nopatchiss.com/scripts/...
- 51
- 694
- 0
English morpheme system and some applications of learning morpheme in establishing words
... and re- near the grammatical end of the continuum are called grammatical morphemes.Note that grammatical morphemes include forms that we can consider to be words like the, a, and, and of and ... of all, we should understand deeply about its morpheme system. Living in a community, human beings need a tool to communicate with each other, and to carry on human and social affairs. They, ... also play an 17English morpheme system Luong Thuan & Kim Phuong• First, both English morphemes and Vietnamese morphemes are the smallest unit of language and can not be divided into smaller...
- 22
- 2,323
- 6
File System and Disk Administration
... Linux ext2 Kiểu filesystem đợc dùng chủ yếu trên Linux partition. iso9660 Kiểu ISO 9660 filesystem đợc dùng với CD-ROM disks. sysv Kiểu Nhằm hỗ trợ cho dạng UNIX System V filesystem. msdos ... dới Linux systems:## Sample /etc/fstab file for a Linux machine## Local mounts/dev/sda1 / ext2 defaults 1 1mkswap /dev/hda22. Mounting and unmounting file systemsMounting file systemsNh ... Bỏ mount một hệ thống file (điểm mount). I. File System and Disk Administration1. Cấu trúc th mục trên Unix / - Th mục gốc trên UNIX file system. /bin - Là symbol link tới /usr/bin chứa các...
- 10
- 521
- 0
The F# Tool Suite and .NET Programming Tools
... compatibility and advanced interoperation.CHAPTER 12 ■THE F# TOOL SUITE AND .NET PROGRAMMING TOOLS 3227575Ch12.qxp 4/27/07 1:07 PM Page 322The F# Tool Suite and .NETProgramming Tools This ... programming tools, boththose that are distributed with F# and those that target .NET in general.The F# distribution includes two versions of the compiler and a number of other tools. These ... resource files. The .NET file format is much easier to understand and work with, and also Visual Studio provides some nice resource management tools. It is also much easierto localize your applications,...
- 24
- 554
- 0
File system and Disk Administration
... solaris dùng lệnh newfs), mkswap tạo swap file system. Ví dụ mke2fs /dev/hda1 mkswap /dev/hda2 3. Mounting and unmounting file systems Mounting file systems Như ta đ biêt hệ thống file của UNIX ... của người sử dụng. ỹ Số trang đ in. VIII.File System and Disk Administration 1. Cấu trúc thư mục trên Unix ỹ / - Thư mục gốc trên UNIX file system. ỹ /bin - Là symbol link tới /usr/bin chứa ... recover bởi fsck. 2. Creating file systems Giới thiệu về UNIX- Một số thao tác cơ bản trên UNIX 77 ỹ sysv Kiểu Nhằm hỗ trợ cho dạng UNIX System V filesystem. ỹ msdos Kiểu DOS partition...
- 10
- 322
- 0
OCP: Oracle8i DBA Performance Tuning and Network Administration Study Guide
... configure and manage the main network components and network configuration of the server.Chapter 14 covers client side configuration. You will learn about the main network components and configuration ... terminationD.Aborted termination62.What does OSI stand for?A.Oracle Standard ImplementationB.Oracle System InformationC.Open Standard InterconnectionD.Open Systems InterconnectionCopyright ©2000 ... basic network architecture. You will learn about the areas to consider when designing and implementing an Oracle network. You will also be introduced to the standard features of Oracle8i Net8 and...
- 810
- 406
- 0
FreeBSD and Command Line Tools
... aregularfile.r, w, and xmeaninguserreadable,userwritable, and userr, w, and xmeaninggroupreadable,groupwritable and groupr, w, and xmeaningworldreadable,worldwritable, and worldpureftpd ... here.Using ping and arp from the CommandLineIn chapter 9, we looked at the ping and arpcommands. These are available from the webinterface but they are also available from thecommand line. To ... operating system that is a specialized software to control and manage the different resources in the computerincluding memory, video, networking, and hard disks.Some popular operating systems...
- 43
- 849
- 0
Network Monitoring
... configure Nagios.CHAPTER 6 N NETWORK MONITORING 159The last options from the Monitoring section that I want to cover here are Service Problems, Host Problems, and Network Outages. Each of these ... small example network in which four Linux servers are used. Three of these are on the internal network, and one of them is on the Internet. Nagios can monitor other operating systems as well, ... N NETWORK MONITORING 132+ap_+j]ceko.+dpl]oos`*qoano, but this file is not created automatically. The following command creates it for you, puts a user with the name j]ceko]`iej in it, and...
- 29
- 357
- 0
Logging and Log-Analysis Tools
... custody and legal reasons, event filtering, and event notification via e-mail and pager for specified events. Syslog uses a combination of facilities and severities to identify the source and type ... a server and a client component. The client typically runs on the firewall itself; the server is installed on a Windows, Linux, or UNIX host. Syslog server functionality on Linux and UNIX is ... Logging and Log-Analysis Tools Most firewalls can log events related to traffic that has been permitted or denied....
- 2
- 332
- 0
Tài liệu Network Troubleshooting Tools pptx
... of a system should be open and available. This allows users to adapt and make optimal use of the system and provides a review process, giving users more input into the operation of the network. ... including tools for custom packet generation and load testing. The chapter concludes with a brief discussion of emulation and simulation tools. You probably will not use these tools frequently and ... impact on how you approach problems in general and the use of tools in particular. It will determine which tools you can use, how you can use the tools, and, most important, what you can do with...
- 269
- 276
- 0
Tài liệu Designing a Microsoft Windows Server 2003 Active Directory and Network Infrastructure docx
... Each office uses a standard user account and password for all servers in that office. Network administrators in each office know the user account and password combination. Network administrators ... of the bandwidth used between the Chicago and New York offices. Bandwidth utilization between these two offices is currently cause for concern. Network traffic between the Chicago and New York ... level of availability and reduced latency between the New York and Boston offices is required. Bandwidth utilization between the Boston and New York offices is minimal and is not a concern in...
- 52
- 561
- 1
Tài liệu Network Troubleshooting Tools pdf
... Chapter 8. Performance Measurement Tools 158 8.1 What, When, and Where 158 8.2 Host -Monitoring Tools 159 8.3 Point -Monitoring Tools 160 8.4 Network- Monitoring Tools 167 8.5 RMON 176 8.6 Microsoft ... of a system should be open and available. This allows users to adapt and make optimal use of the system and provides a review process, giving users more input into the operation of the network. ... the reactor. System failures are most pernicious in systems with tight coupling between subsystems and subsystems that are linked in nonlinear or nonobvious ways. Debugging a system failure...
- 269
- 432
- 0
Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu nội dung cụ thể cho từng kĩ năng ở từng cấp độ xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ rôto dây quấn đặc tuyến hiệu suất h fi p2 đặc tuyến dòng điện stato i1 fi p2 thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng 9 tr 25