Need to scan an Internet resource can arise in different situations – for example if you want to check existence of vulnerabilities on the website. Having made it and having eliminated the revealed defects, you considerably will reduce the probability of cracking of your resource.
Instruction
1. Scanning of the website is carried out by means of specialized programs. Some of them are created especially for complex check of safety of Internet resources and extend quite legally. Others are exclusively hacker utilities created for cracking of the computers connected to network.
2. Scanning can be conducted in several directions. The first and the most widespread is a scanning of the specific IP address on existence of open ports. The open port demonstrates that some program works at this port. For example, if scanning revealed open port 4899, then it speaks about presence on the computer of the program of remote administration Radmin.
3. The important direction of scanning is detection of vulnerabilities of the websites. At such scanning a big set of the known vulnerabilities is checked, their specific package depends on the used scanner. A set of vulnerabilities can be edited, deleting irrelevant and adding "fresh". Having checked the website, the scanner displays the list of the found vulnerabilities or reports about their absence. Having the list of vulnerabilities, the hacker can try to use them for receiving control over the website.
4. For check of the resource on possible vulnerabilities use the RSpider program, it is one of the programs, best in the class. The program is absolutely licensed, its demoversion can be downloaded on the website of vendor. The demoversion has significant restrictions therefore it is better to acquire the full version.
5. One more remarkable program of this class – Nmap (Network Mapper). There are versions both under Windows, and under Linux. Experienced users prefer to work with the console version, but there is also an option with the gui-interface – Zenmap. The program has very much a wide range of possibilities – port scanning, definition of versions of the services "hanging" on them, definition of OS, firewalls and other important information.
6. Angry_ip_scanner. Program for port scanning. Works rather well and quickly, it is the best of all to use it for check of the selected ip range on the list of the ports interesting you.
7. VNC-scanner. The port scanner, has console versions and versions with the gui-interface. Works very quickly therefore it is possible to recommend it as one of the best scanners for check of ip-range.
It is necessary to remember that scanning of someone else's computers can draw to you special attention of competent authorities – especially if computers of security agencies got to the range of the scanned addresses. Therefore we strongly recommend to use scanners only for check of safety of your own computers and the websites.