What are default backdoor ports

[Renau]

I had a windows computer which I think is infected with virus. But my antivirus is not showing up any information on the same. I had found that there is some way by which we can find out that the backdoors are working on the computer. How to detect. What are the way by which I can catch the backdoors even if they by pass my security. And what are default backdoor ports.

[Milton.J]

Backdoors are frequently installed by aggressors who have concession a system to simplify their consequent return to the system. You have to believe the difficulty of identifying a large class of backdoors, namely those providing interactive right of entry on non-standard ports, by submissively monitoring a site's Internet access link.

[Spyrus]

You can vicious circle them by a common algorithm for distinguishing interactive traffic based on packet size and timing features, and a set of protocol-precise algorithms that appear for signatures individual to exacting protocols. These assessments are supported on the algorithms on huge Internet right of entry traces and find that they execute relatively well.

[Snake08]

In accumulation, to a number of the algorithms are agreeable to pre filtering using a stateless packet pass through a filter, which yields a most important presentation increase at little or no loss of correctness. On the other hand, the achievement of the algorithms is tempered by the detection that huge sites have many users who regularly has right of entry what are in information benign backdoors, such as servers running on non-customary ports not to conceal, but for ordinary administrative reasons.

[Zachary]

A backdoor is machinery furtively or covertly commenced into a computer system to smooth the progress of unconstitutional right of entry to the system. While backdoors can be installed for accessing a multiplicity of services, of particular interest for network sanctuary are ones that present interactive right of entry. These are frequently installed by attackers who have negotiated a system to simplicity their successive return to the system.

[Big Fish]

Commencing a network monitoring perception, such backdoors regularly run over protocols such as Telnet [PR83a], Rlogin [Ka91], or SSH [YKSRL99]. An illustration of a non-interactive backdoor would be an unconstitutional SMTP server [Po82], say to smooth the progress of relaying email spam; and one to some extent in between would be an FTP [PR85] backdoor used to present right of entry to illegitimate content such as pirated software, or a Napster server [NA99] run in contravention of a site's policy.