Networking scanning is a methodical process that involves probing a target network with the intent of finding out information about it and using that information for attack phases. If you have a command of network and system fundamentals, coupled with thorough reconnaissance it is possible to get a reasonable picture of a network—in some cases, … Read more
Simple Network Management Protocol (SNMP) is built in to virtually every network device. Network management programs (such as HP OpenView and LANDesk) use SNMP for remote network host management. Unfortunately, SNMP also presents security vulnerabilities. Vulnerabilities The problem is that most network hosts run SNMP enabled with the default read/write community strings of public/private. The … Read more
The preceding section deals primarily with scanning incoming mail, but what about mail that you are sending? Does your antivirus program automatically scan it for viruses? Viruses and their writers are pretty sneaky; if your antivirus program scans files as they are created (the “automatic” protection), then you can be sure that outbound mail is … Read more
Some well-known makes of antivirus software have introduced Web-based virus scanning. You can go to one of these Web sites and click the Scan my computer for viruses link. The Web page downloads a small program that will then scan your entire computer for viruses — usually for free (such a deal!). While there are … Read more
The brute-force method of scanning your computer is to look at the entire hard drive and every file in it. It’s actually pretty easy to tell your antivirus software to do this — just scan drive C:, or all hard drives, or however your antivirus program offers the choices to you. There are probably ten … Read more