IMAP (Internet Mail access protocol,internet) is formerly known as the Interactive Mail Access Protocol (Interactive mail, Access Protocol). IMAP was an email acquisition protocol developed by Stanford University in 1986. Its main role is that the
1. Use the lsof command line to list all open files
# lsof
This is a very long list, including open files and networks
The above screen contains many columns, such as PID, user, FD, and TYPE.
FD - File descriptor
The FD column contains such values.
1. Install sendmailIf you have installed the sendmail 8.11 service in Redhat9 by default, you can ignore the installation process. For more information, see the redhat CD documentation.
If the sendmail service is not installed, follow these steps:
//
Nmap memo form: From Discovery to vulnerability exploitation (Part 5)
This is the last part of the memo list. Here we will mainly discuss vulnerability assessment and penetration testing.Database Audit list database names
nmap -sV --script=mysql-
The port can be divided into 3 main categories:
1) Accepted ports (well known Ports): from 0 to 1023, they are tightly bound to some services. Usually the communication of these ports clearly indicates the protocol of some kind of service. For
ping command and network port:1.Ping 127.0.0.1127.0.0.1 is the local circular address, ping General instructions that the TCP/IP protocol works properly, otherwise TCP/IP is not normal.2.Ping IP address for this computerUse the ipconfig command to
One, Target portAll traffic through the firewall is a part of the connection. A connection contains a pair of "talking" IP addresses and a pair of ports corresponding to the IP address. The destination port usually means a service that is being
Although javamail APIs are completely encapsulated, there are still a lot of logic and details to process to write a program that correctly displays complex emails. Below is the servlet I recently compiled when I made a webmail. Basically, I can
This article for my study of Nginx notes and experience, if there are errors or inappropriate places, but also hope to point out1 Basic Concepts 1.1 forward proxy and reverse proxyforward proxy :In general, we say that the agent technology is to
Common interfaces have the following relationships. It is difficult to write a method on the arrow. If this is not the case, you can refer to the help documentation for details.
Iworkspacefactory --------------> iworkspace ------------------>
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