With the equipment of the rooter and the like which is in boundary of network, from inside network prohibit the TCP port 25th communication of the computer outside to. Internet service provider (ISP) and the like it does in order to block the fact that [supamumeru] is transmitted from the personal computer of the member.

With the port which SMTP which is used in transmission of the mail utilizes, transmission of the mail becomes impossible the 25th port by the fact that this is closed. The member being the mail server of the provider, when it tries to transmit [supamumeru], individually it cuts off this it is possible to make the member withdrawal from membership dealing, but when the mail server outside is utilized, it cannot take such measure. Then, the computer of the member it is possible by cutting off the communication to the SMTP server outside with boundary of network, to prevent the fact that [supamumeru] and the like is sent making use of the mail server outside completely. To the last just cuts off the communication to the external server as for communication to the mail server who is inside our network because it is possible, sending and receiving of the usual mail which utilizes the mail server of the provider does not receive influence.

Outlook Express

Reading: Outlook express
Alias:
OE
Field:
Internet > mail > Outlook Express

The E-mail software which belongs to Windows 98/2000/XP of the Microsoft corporation and Internet Explorer. The subset of Outlook which is integrated [metsusejingusohutouea] of the same company (functional reduction edition) it hits.

The function which such as compilation indication of the HTML mail is necessary for the mail software and automatic distribution function of the mail one sort is had.

Recently, the E-mail attachment type worm which abuses the security hole which Outlook Express of Windows edition has, is represented in Nimda and the like occurs large number. When it tries to look at the mail where these worms are attached with Outlook Express which security hole measure has not done, one stamp is not touched the attachment file and also the [te] is infected to the worm.

OverDrive processor ODP

Alias:
Overdrive processor
Field:
Microprocessor > x86/Intel > Intel > OverDrive processor

OWF Unidirectional function

Alias:
Dropping door function, trap DOOR function and one-way function
Field:
Security > code/hash > OWF

But as for seeking the result from argument simplicity, as for seeking argument from the result the function which had the character that it is difficult.

Even in OWF, the function which satisfies condition such as the fact that it is difficult to find the kind of argument which can extract the result of thing and a certain specification whose it is difficult to find the group of two arguments where you can obtain the same result is applied by cryptographic technology, and the like especially is called “hash function” and so on.