Computer FAQ Ports: 21 Services: FTP Description: The port open by the FTP server is used to upload, download. The most common attacker is used to find ways to open anonymous's FTP server. These servers have a readable and writable directory. Trojan Doly Trojan, Fore, Invisible FTP, WebEX, WinCrash, and Blade Runner open port. Port: 22 Services: SSH Description: The connection to this TCP and this port established by PCANywhere may be to find SSH. This service has a lot of weaknesses, and if you are configured as a specific mode, many of the versions that use the RSAREF library will have a lot of vulnerabilities. Port: 23 Services: Telnet Description: Remote login, intruder is searching for remote login Unix service. Most cases scan this port is to find the operating system running in the machine. There are other technologies, and the intruder will also find a password. Trojan TiNy Telnet Server opens this port. Port: 25 Services: SMTP Description: The port open by the SMTP server is used to send an email. Intruders look for SMTP servers to pass their spam. The invader's account is turned off, and they need to connect to the high bandwidth E-mail server to pass simple information to different addresses. Trojan Antigen, Email Password Sender, Haebu Coceda, Shtrilitz Stealth, WinPC, Winspy are open. Port: 80 Service: http Description: Used for web browsing. Trojan Executor opens this port. Port: 102 Services: Message Transfer Agent (MTA) -X.400 over TCP / IP Description: Message Transfer Agent. Port: 109 Service: Post Office Protocol -Version3 Description: POP3 Server Open this port for receiving mail, client access to the server side mail service. POP3 services have many recognized weaknesses. There is at least 20 weaknesses overflow from the username and password exchange buffer, which means that the invader can enter the system before the truly landing. There are other buffers overflow errors after successfully logging in. Port: 110 Service: Sun's RPC Service All Port Description: Common RPC services include RPC.Mountd, NFS, RPC.Statd, RPC.csmd, RPC.TTYBD, AMD, etc. Port: 119 Service: NetWork News Transfer Protocol Description: News News group transfer protocol to carry USENET communication. This port connection is usually people looking for a USENET server. Most ISP limits, only their customers can access their newsgroup servers. Open the newsgroup server will allow / read anyone's post, access the restricted newsgroup server, post anonymous to post or send a spam. Port: 135 Services: Location Service Description: Microsoft runs DCE RPC End-Point Mapper for this port for its DCOM service. This is similar to the functionality of UNIX 111 ports. Use DCOM and RPC services to register their location by End-Point Mapper on your computer. When remote customers are connected to a computer, they look for the location of the end-point mapper to find the service. Is this port of Hacker Scanning Computer to find this computer running Exchange Server? What version? Some DOS attacks are directly for this port.
