tcp 587

Transfer http://blog.csdn.net/goodboy1881/article/details/665061 -------------------------------------------- The data link layer has three purposes: Sends and receives IP data packets for the IP module. Sends ARP requests to the ARP module and

This reference article is mainly used for the diffusion of knowledge points in subsequent articles, in this special backup and diffusion learning Exchange.There are three purposes of the data link layer: Send and receive IP datagrams for IP

The data link layer has three purposes: sending and receiving IP datagram for the IP module. Sends ARP requests to the ARP module and receives ARP responses. You have heard of sending RARP requests to RARP and receiving RARP response IPs. As for ARP

The data link layer has three purposes: Sends and receives IP data packets for the IP module.Sends ARP requests to the ARP module and receives ARP responses.Send RARP requests for RARP and receive RARP responsesWe have heard of ip addresses. As for

We recommend a good iptables-shell script to free you from the troublesome iptables configuration. I am not sure who the script author is, so I deleted the version declaration. system: centos5.9 script content: viiptables. sh #! /Bin/sh # -----------

The code is as follows Copy Code #!/bin/sh#------------------------------------------------------------------------------# for debugging use Iptables-v.Iptables= "/sbin/iptables"Ip6tables= "/sbin/ip6tables"Modprobe=

Cisco 2811 Routers Detailed configurationRouter>enableRouter#configure TerminalRouter (config) #hostname cisco2811//define router name2811 (config) #enable password 124563831//Set Login password2811 (config) #line vty 0 42811 (config-line) #password

Lsof is a powerful diagnostic tool that can be used to contact open files through a process and can list all the file information opened by a process.1 finding the process associated with an open fileBy specifying a file, you can discover the

Amavisd-new is a very powerful anti-spam software, but most of the time we need to skip the anti-spam checks on our local local mail, this article is a discussion of how to make the local domain skip the amavisd-new of several ways to implement the

The purpose of this article is not to teach people to intrude into Linux servers, but to improve their own technologies and enhance the security awareness of network administrators. That's all! Careless network administrators should understand that