protocol number

Due to historical reasons, one of the problems with deploying L2 Tunneling Protocol (L2TP/IPSec) with Internet Protocol Security is that the IPsec dialogs after Network Address Translation (NAT) cannot be located. Internet service providers and

Introduction to advanced scanning technology and principles Release date:2002-01-29Abstract: Refdom (refdom@263.net) Scan is the basis for all intrusions. There are many host detection tools, such as the well-known NMAP. I don't have any new

MTU: Maximum Transmission unit of maxitum transmission unit MSS: maxitum Segment Size Maximum Segment Size Pppoe: PPP over Ethernet (carrying the PPP protocol over Ethernet) [Analysis process]Let's talk about the MTU's maximum transmission unit,

SSH is fully known as secure shell. It is a protocol developed by the Network Working Group of the IETF (Internet Engineering Task Force, the objective is to provide secure remote logon and other security network services on a non-secure network. We

Introduction to Firewall With the rapid development of computer network technology, network security issues have become increasingly prominent in the face of various users. According to the data obtained by the author, nearly 20% of users on

Some friends who are new to ACL (access control lists) may be unfamiliar with vacl. This article will provide a comprehensive description of the use of vacl on Cisco COs and iOS vswitches.The same as the regular access list, dynamic access list, and

Non-Life-A cainiaoProgramMember's 5-year career road 16th Author: Flowers 8 Tianya it: http://cache.tianya.cn/publicforum/content/itinfo/1/77229.shtml Date: 18:00:3025 -- Huang DaxianBuses outside Shenzhen are running in a dust-proof architecture,

Layer in Internet protocol stack People have already discussed how to map TCP/IP reference models to OSI models. Because TCP/IP and OSI model groups cannot exactly match, there is no correct answer yet. In addition, the lower layer of the OSI model

Organization: China Interactive publishing network (http://www.china-pub.com /)RFC document Chinese Translation Plan (http://www.china-pub.com/compters/emook/aboutemook.htm)E-mail: ouyang@china-pub.comSword zxl1025@chinese.com (sword)Release

  SSH is a secure shell program   [Authentication principle] There are two authentication methods (1)Account and password-based authentication (2)Public Key and private key-based authentication The SSH logon process is divided into five phases. 1.

There are two important databases in the IPSec Security System. One is the SPD-security policy database, and the other is the sad-Security Association database. As the name suggests, Spd defines several policies to explain how each IP data stream

I. Basic concepts of RoutingThe device at the Router network layer is responsible for routing and forwarding IP packets.1. Route typeRoute types include: direct connection, Static Routing, default routing, and dynamic routing.A direct connection

Use Perl socket To use the Perl Socket API, you must first load the socket module.Use SOCKET;========================================================== ====================================Socket (file handle, af_inet, data type, protocol

Socket provides two functions to control socket behavior. One is used to set options and the other is used to query the status of one socket option. The following three options can be set or queried: Common options that work on all socket types.

In the classification process of QoS, the most important thing is to configure different priorities for different packets, and sort the packets of inbound switches by priority, then, the switch executes the corresponding QoS behavior based on the

Client:1, socket (int af, int type, int protocol)The socket () function is used to assign a description word of a set of interfaces and the resources it uses, based on the specified address family, data type, and protocol.　If the Protocol protocol

Crossing, please give me more advice.IP protocol, Interner Protocol, Internet Protocol, provides three-layer addressing and three-layer communication capabilities.Grab the package as follows:Summary of content:Content analysis:1, Version: Used to

  How to Use netlink in kernel 2.6.24 or later Test environment: 2.6.28 Netlink has greatly changed in different versions of the 2.6 kernel. For details, refer to (note that the version number is not necessarily accurate

As mentioned above, I first learned about two ssh logon methods, one of which is key logon, but do I still need to enter the password that generates the key? Http://blog.csdn.net/xiaoputao0903/article/details/22489091 If we manage enough servers, it

The concept of Process Communication was initially derived from a standalone system. Since each process runs within its own address range, in order to ensure that two processes communicate with each other without mutual interference and coordination,