19 the chargen: This is a just send the character of service. UDP version will respond after receiving the UDP packets packet containing garbage characters. TCP connection, Acer Aspire One AOD260 battery send data stream contains garbage characters know the connection is closed. Hacker use of IP spoofing and DoS attacks can be launched. Forged UDP packets between two chargen servers. Because the server is attempting to respond to the infinite and from the data communication between two servers to a chargen and echo will cause the server to overload. Similarly the fraggle DoS attacks to the destination address of this port broadcast Acer Aspire One AOD255 1134 battery with a IP packet forgery victims, the victim in order to respond to these data overload.
21 ftp:, the most common attack used to looking for ways to open the "anonymous" ftp server. These servers can read and write the directory. Hackers or Crackers use these servers as the transmission warez (private programs) Toshiba Tecra A3X-165 Accu and pr0n (intentionally misspelled words to avoid the node of the search engine category).This is similar to the results of the UNIX system "ps" command say it again: ICMP has no port, the ICMP the port 11 usually is the ICMP type = 11.23 Telnet: Internet intruders landing in the search for a remote UNIX service. In most cases, the intruder scanning this port in order to find the machine running the operating system. In addition, the use of other technologies, the invaders will find the password.
22 ssh: the PcAnywhere to establish a TCP port connection may be in order to find the ssh. This service has many weaknesses. If you configure a specific pattern, many using RSAREF library version has many loopholes. (Recommended) should also be noted in other ports run ssh ssh kit comes with a program called make-ssh-known-hosts. Toshiba Satellite L505-S6956 Accu It will scan the entire
Ssh host domain. You sometimes use this program inadvertently scan to. UDP (not TCP) and the other end of the 5632 port is connected to means that there are search pcAnywhere scan. 5632 (hex 0x1600) after the exchange is 0x0016 (hex 22).Hacker often use this method to penetrate the firewall.
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