The problem is that there are two existing machines: intranet: one server on the intranet, which cannot be accessed directly from the Internet. Internet: the internet can access files and servers on the machine. At the same time, the machine can access any files on the intranet .. Due to historical reasons: the problem above the
threat outbreaks in the LAN. Relying on a single border firewall and anti-virus software, it cannot cope with viruses and other information security threats. Only by protecting each client can it effectively prevent virus intrusion, information leakage, and worms, network abuse and other problems. Therefore, Enterprise Intranet security management becomes increasingly important.
Overview of Intranet Securi
as we all know, in order to infiltrate the intranet, you have to be in that intranet. But when you install Kali in VMware, most users do not choose bridging mode for convenience, but instead choose to use IP networks shared with nativeof course, this will be able to surf the Internet, but your virtual machine does not actually get the intranet IP. If you do not i
network, then basic NAT is responsible for translating the subnet IP of the node into a globally unique IP and sending it out. (Basic NAT changes the original IP address in the IP packet, but does not change the port in the IP packet). For basic NAT, refer to RFC 1631.Another kind of NAT is called NAPT, which we can see from the name.Napt not only changes the IP address of the IP datagram that passes through this NAT device, but also changes the TCP/UDP port of the IP datagram. Basic NAT Device
After writing object 672, a critical problem of the software is exposed. If both the server and client are in the Intranet environment, that is, both parties use NAT to access the Internet, in this case, the client cannot directly communicate with the server.
The solution can be:
1: deploy the server in a public network without Nat.
2: Use common Nat penetration methods, such as UDP injection or STUN Protocol. However, these methods require another kn
Environment: Cent OS 7.0 background:
The title of this article can be set as follows because he is the same workaround:(1) Why Dubbo automatically use the intranet IP when registering zookepper.(2) Dubbo Consumers cannot connect to the service provided by the producer(3) ... Scene Restore
1. Project Deployment Framework
Recently in the development of a project, the use of the Dubbo service, the following is the case of project deployment,
The details
Intranet SecurityIn the face of threats, firewall, anti-virus software, IPS, and other products are often ineffective. These products have been widely deployed in the enterprise network, but these products are mainly for Internet security protection.CAIt is a third-party trust institution that uses the PKI public key infrastructure technology to provide network identity authentication services, is responsible for issuing and managing digital certifica
What is port ing:
Port ing (NAT or napt) refers not to a port in the physical sense, but to a port in the TCP/IP protocol. It is a logical port. Port ing: if a computer on the Intranet needs to access the Internet, port ing is required. Port ing is divided into dynamic and static. dynamic port ing: if a computer in the Intranet needs to access xinlang, it will send packets to the NAT gateway, including the
Today, we will talk about how to use port ing without using the gateway to open the Intranet.
I. Prerequisites
A public IP address is required. Assume that we have a public IP Address: 210.210.21.21.
Ii. Tools used
1.lcx.exe
2. vdic
Iii. Methods
Method 1: Use lcx.exe for ing.
(1)we will upload lcx.exe to the public IP address, and execute lcx-listen Port 1 Port 2 in the DOS environment on the public IP Address
See lcx-listen 3030 for details.
T
stop spoofing, the target computer will not be able to access the network normally, resulting in user O M accidents.
To sum up, there are many problems with ARP spoofing blocking methods. Therefore, Intranet security products should use this method dialectically.
1. Avoid being single and adopt multiple blocking methods
The Intranet security risk management and audit system connects terminals to vswitches
A man's martial arts: the idea of Intranet penetration testing (2)
Web penetration (previous article)Http://www.bkjia.com/Article/201412/357403.htmlDifferent, Intranet penetration requires more randomness and breakthrough, and the situation is more complicated. When encountering obstacles, sometimes you can use different ideas to break through. In many cases, you can only stop here. Here are some of my summ
How to use Linux bots to penetrate a small Intranet
The shell method in the case is relatively simple. We only focus on the limited space, starting from obtaining permissions.Install BackdoorAfter entering the system, my RP was so lucky that it turned out to be the root permission...View passwd account informationDirectory tree structure:Because Intranet penetration is required and permissions may be lost a
Today to tell you how to use the port mapping, not through the Gateway Open intranet method.
First: The use of the premise
Need to have a public network of IP. If we now have a public network of ip:210.210.21.21
II: Tools to use
1.lcx.exe
2.vdic
Three: Method explanation
Method One: Use Lcx.exe to map.
(1) We will upload the Lcx.exe to the public network IP, in the public IP on the DOS environment in the implementation of Lcx–listen Port 1 Por
Guide
As we all know, SSH is a secure transport protocol, which is more used in connecting servers. But in addition to this function, its tunnel forwarding function is more attractive.
If the two intranet between the Linux server need to log in with each other, or need to access a port in the intranet, worry that there is no public network IP, you can use the method has Ngrok (https://ngrok.co
The proxy server settings have many surprising relationships with the IE region.
The Local Intranet Zone is easy to use. It allows TCP/IP to allow servers on the other side of the earth to access the same server as the server on the lower floor .. on the other hand, the question "local" is left to the user or the network administrator to answer. it is easy to guess that when the machine is a local Intranet
were opened.Consider port forwarding to log in to SSH.Three. Intranet SSH forwarding:Upload the tool to a host outside the network:Since the target host is Linux,-listen is followed by the-linux:The SSH client then remotely connects to the host's 3001 port, and the extranet host displays a connection:Then bounce ssh:Outside the network, you can see that the connection has been received:Soon, the SSH client also reacted, stating that the rebound SSH w
First, explain the concept of "intranet" and "Extranet":
Intranet: That is to say the LAN, such as the school's local area network, the local area network each computer IP address in this local area network has the mutual opposite sex, is not repeatable. But the intranet IP in two LAN can have the same.
Extranet: That is, the Internet, LAN through a server or a r
Environment Description:The router is assigned a dynamic public IP, and has router login administrative rights, and the Web server is deployed in the router's internal network. How to publish the intranet website to the extranet for public access?Solution:Intranet use nat123 dynamic Domain name resolution, real-time domain name fixed to the routing public IP, and then on the router to do site port mapping. When an extranet accesses a Web site, it uses
This is a creation in
Article, where the information may have evolved or changed.
Article keywords
Go/golang
Gopacket
Grab Bag
Pcap/libpcap
Arp
Nbns
MDNs
Manuf
Program
Description
This article for the go language itself is not too much to explain, want to spend more time on a few network protocol explanation, I hope this article on the plan or are using go for TCP/IP programming and grasping the package of friends to bring help.GitHub Address: Https://github.com/t
Bkjia.com integrated message: at present, network boundary security protection cannot effectively protect network security. Only border security and Intranet Security Management three-dimensional control is the way out.
Intranet security focuses on internal network users, application environments, application environment boundaries, and Intranet Communication Se
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