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Security hardening strategy of Linux system (II.)

;/etc/issueCp-f/etc/issue/etc/issue.netEcho >>/etc/issue2) for Apache configuration file, find Servertokens and serversignature two directive, modify its default properties as follows, use no echo version number:Servertokens PRODServersignature OFFVi. iptables Firewall Rules:Iptables-a input-p--dport 22-j ACCEPTIptables-a input-i eth0-p TCP--dport 80-j ACCEPTIptables-a input-m State--state established,related-j ACCEPTIptables-a input-j DROPThe above rule will block TCP active pick-up from the in

Linux Hardening measures

, such as: DD, cpio, tar, dump, etc.7 Other 7.1 using firewallsFirewall is an important aspect of network security, we will have another topic to elaborate on the firewall, including the principle of the firewall, Linux 2.2 kernel under the IPChains implementation, Linux 2.4 kernel NetFilter implementation, commercial firewall product applications.7.2 Using third-party security toolsLinux has a lot of good security tools, such as: Tripwire, SSH, Sudo, Tcpdump, Nmap,

Using Google as a hacker attack principle _ security related

file. Here, I will freemind the picture drawn by text. For more information about Google Hack, help us analyze the casing Connector characters: Code: +-:. *| Operator: Code: "Foo1 Foo2" Filetype:123 Site:foo.com Intext:foo Intitle:footitle Allinurl:foo Password-related Code: : "Index of" htpasswd/passwd Filetype:xls Username Password Email "Ws_ftp.log" "Config.php" Allinurl:admin mdb Service Filetype:pwd (FrontPage) Sensitive information: Code: "Robots.tx" "Disallow:" Filetype:txt INURL

"Collection" Top ten webserver vulnerability scanning tools

test parts and develop early security assurances. It is capable of scanning many common vulnerabilities, such as cross-site scripting attacks, HTTP response splitting vulnerabilities, parameter tampering, implicit field handling, backdoor/debug options, buffer overflows, and so on.Ten. N-stealthThe N-stealth is a commercial-grade webserver security scanner. It is more frequent than some free web scanners, such as Whisker/libwhisker, Nikto, etc., and it claims to contain "30,000 vulnerabilities

NET use command collection detailed () _dos/bat

port status of common services-ftp Detect FTP Weak password-pub detect the FTP service anonymous user write permission-POP3 Detection pop3-server Weak password-SMTP Detection Smtp-server Vulnerability-sql Detection sql-server Weak password-SMB Detection nt-server Weak password-iis detects IIS encoding/decoding vulnerabilities-CGI detect CGI Vulnerabilities-NASL Load Nessus Attack script-all detect all of the above itemsOther options-I adapter number

Metasploit seepage use case analysis and demo production requirements

Transferred from: Tsinghua-Zhuge Jian Wei 1. Format requirements: Flash format, screenshot screen video demo2. Post-processing: magnifying effect/explanatory annotation; with narration recording 3. Each case study divides into the environment preparation, the infiltration utilization and the flaw analysis three video demo, the concrete process: (a) Environmental preparation processI. Environmental interpretation1. Attack aircraft environment (using which attacks software, such as Metasploit,p

Network risk assessment and general flow

the general Web page host database is more commonly used AppScan Nessus WVS NSFocus (green Union) Day Mirror (Venus Chen) and artificial experience judgment, etc. 5: Risk Assessment ReportArtificial analysis of potential threats and vulnerabilities based on the results of a vulnerability scan and existing network topology analysis a risk assessment report is issued 6: Rectification OpinionRectification recommendations generally include the manageme

Sqlmap: An open-source, popular penetration testing tool

):Rank Vulnerability Scanner Vendor Detection rate Input Vector Coverage Average Score1 Arachni tasos Laskos 100% 100% 100%2 Sqlmap sqlmap developers 97.06% 100% 98,53%3 IBM AppScan IBM Security Sys Division 93.38% 100% 96,69% 4 Acunetix WVS Acunetix 89.71% 100% 94,85% 5 ntospider NT Objectives 85.29% 100% 92,64% 6 Nessus tenable Network Security 82.35% 100% 91,17% 7 webinspect HP Apps Security Center 75.74% 100% 87,87% 8 burp Suite Pro Portswigger

SQL Injection via HTTP header

vulnerability scanner scores an average.We then list the Top 14 scanners from the percentage of the resulting detection accuracy rate: Rank Vulnerability Scanner Vendor Detection Rate Input Vector Coverage Average Score 1 Arachni Tasos Laskos 100% 100% 100% 2 Sqlmap Sqlmap Developers 97.06% 100% 98,53% 3 IBM AppScan IBM Security Sys Division 93.38%

How to take a measurement method for automated penetration testing

is only an aid The desire for automation adds many new features to popular vulnerability scanners, such as the Acunetix Web vulnerability scanner (which is good at cracking passwords in Web applications) and Metasploit Pro (which can be used to obtain command prompts and create Backdoor programs ). But even these tools cannot completely automate the process. For example, using Metasploit Pro, IT must first run a vulnerability scanner (such as Nexpose or Nes

Next-generation online security audit software

Bugscan (bugscan.net) is a scanning platform for B/S segments recently developed by a Chinese god. You only need to set up a python environment locally to scan your website in an all-round way, the new scanner also provides plug-in APIs to allow users to write plug-ins themselves and share the plug-ins with users. Small make up local test, scanning speed and results are very powerful, especially the crawler is very in place.The original text is as follows:There are a wide variety of scanning sof

In-depth analysis of SQL Injection principles (1)

, check the page source code, or use tools such as Nessus for spying. 2. determine all possible input methods There are many user input methods for Web applications, some of which are obvious, such as HTML forms. In addition, attackers can interact with Web applications through hidden HTML form input, HTTP header, cookies, and even invisible backend AJAX requests. In general, all http get and POST requests should be user input. To find out all possibl

Web security practices (7) Introduction to web servers and common attack software

specifications can always be reflected in Tomcat. Because of the advanced Tomcat technology, stable performance, and free of charge, Tomcat is favored by Java enthusiasts and recognized by some software developers. It has become a popular Web application server. 7.2common software for Web Server Vulnerability attacks (1) The Metasploit framework is an open-source platform for development, testing, and startup of attack code. We can use it to develop attack code or use the provided code to lau

How can we use security analysis technology to detect advanced malware?

scans, including Nessus and OpenVAS, although they have some limitations compared with paid tools.Another important part of threat detection security analysis is log management. Our idea is to store all system log information in a centralized security location for future use. When an attacker intrude into the system, he or she usually deletes the Intrusion Evidence by editing or deleting the system logs. Transferring these logs to the central reposit

Analysis of Four Web vulnerability scanning technologies

for a specific vulnerability. Call the service detection plug-in to check services with different TCP/IP ports on the target host, save the results in the information library, call the corresponding plug-in program, and send the constructed data to the remote host, the detection results are also stored in the information library to provide the required information for other script operations, which improves the detection efficiency. For example, in an FTP service attack, you can first view the

Full Process of google hack penetration

phpwebshellFoo.org filetype: incIpsec filetype: confIntilte: "error occurred" ODBC request where (select | insert)To put it bluntly, you can directly look up the database for retrieval. The popular SQL injection will be developed."Dumping data for table" username passwordIntitle: "Error using Hypernews""Server Software"Intitle: "HTTP_USER_AGENT = Googlebot""HTTP_USER_ANGET = Googlebot" THS ADMINFiletype:. doc site:. mil classified Check multiple keywords:Intitle: config confixx login password"M

Is your website hacked? Common hacker intrusion Techniques

techniques I know .. !. Everyone strives to ensure the security of their websites/servers .!! Never be too lazy .. The following are some tools for your reference ,: Server vulnerability scanning tool: Nessus. You can find some unpatched and weak password problems. Website vulnerability scanning tool: IBM AppScan, Which is professional and available for download and release on the market. HP's WebInspect and HP websites also have trial downloads, whi

Right Remedy-rescue Compromised systems

the main purpose of intrusion:1. system intrusion for the purpose of show off technology.2. system intrusion for the purpose of obtaining or damaging confidential data in the system.3. system intrusion aimed at undermining the normal operation of the system or business. What will be discussed later in this article is to discuss how to quickly restore systems that have been intruded by these three types of systems, and how to reduce the impact scope and severity of system intrusion. Of course, b

Simple network risk assessment process

missed scanning. Generally, webpage host databases are commonly used, including appscan nessus wvs nsfocus (lumon), skymirror (VENUS), and manual experience judgment. 5: Risk Assessment ReportManual analysis issues a risk assessment report based on the vulnerability scan results and the potential threats and vulnerabilities of the existing network topology analysis. 6. Rectification commentsRectification suggestions generally include management hos

The Art of Grey-Box Attack (1)

######Info######Title: The Art of Grey-Box AttackAuthor: ZeQ3uL (prw.phongthiproek)JabAv0C (Wiswat Aswamenakul)Team: CWH Underground [www.milw0rm.com/author/1456]Website: cwh. citec. us/www. citec. usDate: 2009-07-04##########Contents##########[0x00]-Introduction[0x01]-The Art of Microsoft Windows Attack[0x01a]-Scanning amp; Enumeration[0x01b]-Gaining Access[0x01c]-Escalating Privilege[0x02]-The Art of Unix/Linux Attack[0x02a]-Scanning amp; Enumeration[0x02b]-Gaining Access[0x02c]-Escalating P

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