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
One: Software solutionsSoftware:Https://ngrok.com/downloadNgrok-stable-windows-amd64.zipUse:CMD---CD: Switch to the software catalogNgrok.exeIn the pop-up box, enter: Ngrok HTTP 80 (80 or other port number, depending on the situation)Two: Cisco routes do the mappingSteps are as follows
Login Cisco
En, config
View Configuration Show Run
Fixed IP:IP nat inside source static TCP 10.10.1.253 8080 101.81.232.101 8080
Dynamic IP: Access to
In the development, sometimes we need to send remotely, or through 3G and 4G, or other WiFi environment to send a small amount of data, and do not want to spend so much cost to develop a cloud server, this time the emergence of a router to expose an intranet IP for external network access. In fact, the implementation name of this method is called port mapping .
Next we implement this way ready you want to expose the
Find the private channel for the VPN Intranet to log on to the Internet. The author is located in a branch. There are two network lines, one is frame relay to the headquarters of the company, and the other is the normal ADSL bandwidth, only 512 K. The entire branch uses the K broadband Internet shared by each user, the available bandwidth becomes very small, and the network application experience is not smooth. I have heard that the Internet egress ba
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
To protect Intranet security, I believe that firewall programs are installed on the Intranet of the vast majority of organizations. As a result, the idea of many network administrators attempting to remotely control the Intranet workstation on the internet is forcibly "contained. This is not the case. Because my local network is installed with a firewall and only
Front-facing conditionsTo achieve the purpose: to develop the local computer needs to connect with no network address of the RDS, through the ECS forwarding connection to the RDS databaseClient PC terminal can SSH login to the ECS server with public network.ECS servers with a public network can access other intranet ECS servers through the intranet.ECS Server with public network can access RDS via intranet
Intranet Infiltration some commands to collect and organize
=====
Some command to gather information
=====
@ Query Some of the circumstances of this machine
Ipconfig/all
@ Query machines with relationships
Net View
@ Query has several fields
Nei view/damin
@ View the list of computers in the TestDomain domain
NET View/domain:testdomain
@ query groups within a field
NET Group/domain
@ Divide Network Segment
dsquery subnet
@ query users in the domain
N
Many programs in the local area network can be applicable, but between the external network and intranet and between intranet and intranet is not feasible. The problem is NAT, this article will introduce the next 5 Nat penetration method, solve the internal and external network exchange. 1. Fully conical (full Cone) NAT
Host A and Host B in different
The author of the school through ADSL set up routes to share the Internet. The extranet gateway and DNS are 10.0.0.138, the external network port IP address is 10.0 0.1, and the subnet mask is 255.255.255.0. Self-built sites are placed on the server, on the server has been
IIS is installed and set up, and the "Default Web site" IP address points to 10.0.0.1.
In the default state, you can access the extranet, but you cannot access the intranet. If yo
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
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