Today, my VPs frequently prompts that the nginx 502 Bad Gateway is incorrect. After the VPs is restarted, it becomes annoying. I cannot figure it out. There was no problem when my website reached 1290 of the traffic in the previous two days. Why did 502 Bad Gateway appear this time? Depressed !!! After searching for a long time, I finally found a lot of relevant answers and hoped that this error would not o
1. view the current Gateway
Arp-
Run the preceding commands in SSH to check the gateway host name, gateway IP address, Gateway MAC address, and corresponding Nic, as shown in figure
2. Bind a gateway MAC
1) Bind
Echo "198.52.103.193 00: D0: 2B: D1: 58: 80">/etc/sa
Linux basic network configuration
1.View Network Interface Information
Ifconfig view Network Interface Information (/sbin/ifconfig)
Ifconfig [network interface]
Ifconfig-A: View information of all network interfaces in the system
2.View gateway address and route information
Route view host route information (/sbin/route)
Route | grep defaultDisplay the default gateway address
Ping the target host address t
This article is reproduced, describes how Ubuntu set up IP and network to connect to the networkIf you are using Ubuntu in a virtual machine, please refer to my previous article virtual machine net to set up the Network Settings section of the extranet, first set up the host network, and then configure the virtual machine Ubuntu IP and gatewayIf the host operating system is Ubuntu, please directly refer to the following settingsThe contents are reproduced as follows:1. Check if connectivity is p
1. Check if connectivity is possible, ping the gateway using the ping commandThe beginning is always real unreachable2. Set IPsudo ifconfig eth0 133.133.133.190 netmask 255.255.255.0This sets the IP address and subnet mask of the NIC Eth03. Set the gateway sudo route add default GW 133.133.133.404. Ping the gateway to ping through5. Set the DNS modification/etc/r
postrouting chain, and the output chain, where the preposting chain is primarily used to modify the destination IP address, which is used to configure Dnat, and the postrouting chain can be used primarily to modify the source IP address. Used to configure Snat.Let's look at how the Nat gateway is configured :In the initial state, we use the wireless network card on the NAT host (laptop) as the extranet exit, the initial IP is obtained by DHCP, is 192
Temporarily modify IP address, gateway, host name, DNS, immediately effective, no reboot (failure after reboot)
1. Modify Host Name
The code is as follows:
#hostname Slyar
2. Modify IP address (eth0 is the name of the network card)
The code is as follows:
#ifconfig eth0 192.168.1.5 netmask 255.255.255.0
3. Modify the default gateway (Eth0 is the name of the ne
Temporarily modify IP address, gateway, host name, DNS, immediately effective, no reboot (failure after reboot)
1. Modify Host Name
The code is as follows:
#hostname Slyar
2. Modify IP address (eth0 is the name of the network card)
The code is as follows:
#ifconfig eth0 192.168.1.5 netmask 255.255.255.0
3. Modify the default gateway (Eth0 is the name of the network card)
The code is as follows:
#ro
Because to do static address configuration JS Check, find a lot of data found online are about ip,mask validity check, no ip,submask,gateway logical judgment, write down the code for the needs of the people reference.
Popularization of Gateway address knowledge:
1th: Proceed with the operation 1 with 1 1,1 with 0 for 0,0 and 0 for 0. First, expand the IP and subnet masks10.70.64.223 00001010.01000110.0100
In order to verify the installation of FreeBSD from the Internet, an experiment has been done in the last two days, mainly on how to use FreeBSD to build a gateway, the target is now commonly used PPPoE, this article does not involve traditional telephone dialing, The content of IPFW and IPFilter, because this part of the content is more complex, and there are already too many articles available for reference.
First, set:
1. The operating environmen
. The more the worm spreads, the more scanning packets are on the network. Even if the scanner sends a small packet of probes, the network congestion caused by a large number of worm scans is very serious.
Second, attack: When a worm scans a host on the network, it begins to take advantage of its own destructive capabilities to gain administrator privileges on the host. Finally, use the interaction of the original host and the new host to copy the worm to the new host and start. This shows that
Days easy to network management software single card gateway mode is a wider use of a deployment model, but for many people who are not proficient in the network, it is not clear how the specific settings, this article will detail its setup steps and precautions.
Example: The network original gateway IP is 192.168.0.1, the intranet computer ip:192.168.0.x;
1. Modify the original
only one function, which is to divide an IP address into two parts: network address and host address.What is a gatewayGateways (Gateway) are also known as inter-network connectors, protocol converters. Gateway on the transport layer to achieve network interconnection, is the most complex network interconnection devices, only for two high-level protocols different network interconnection. Gateways can be us
Release date: 2003-12-3 15:57:08
Abstract This article proposes to use Bluetooth technology to build a home network, namely, Personal Area Network (PAN), which is the core device of home wireless networking ). An external information transmission network is composed of G mobile communication network GPRS technology, so as to design a mobile, personalized, convenient to use, advanced technology wireless home gateway.Key words wireless gateway home netw
I have already compiled two documents about oracle transparent gateway connecting mysql database and sqlserver database. I thought it would not connect to other databases through transparent gateway.
I have already compiled two documents about oracle transparent gateway connecting mysql database and sqlserver database. I thought it would not connect to other data
From FoolishQiangblog
Some people often ask me this question "how to enter the intranet" and how to answer it. In summary, it is a sentence "break through the gateway and use port redirection to enter the intranet ".
The first choice is to break through the gateway (GetWay), which is easy to understand, because an intranet must always access the internet through the gat
Obtain the local IP address, mask, and gateway in Linux.
1. Obtain the local IP address and mask /******************************** ************************************* Function name: get_host_info* Parameter Name: local_ip (out) IP* Local_mask (out) mask* Return value: 0 successfully*-1 failed* Function: Obtain the IP address and mask of the local machine.****************************************
Article title: Build a WAP gateway on Linux (basic ). Linux is a technology channel of the IT lab in China. The most popular technology that includes desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic categories to implement mobile services is Wireless Application Protocol (WAP ). The open-source gateway for WAP implements protocol conversion betwe
From: http://www.kelenao8.cn/u/space.php?uid=3do=blogid=26 Gateway (gateways) refers to the communication between different networks of equipment and procedures, is an important component of network connectivity equipment, It not only has the function of routing, but also can transform between two different protocol sets, so that different networks are interconnected. For example, a NetWare LAN can access IBM's SNA network through a
In the market economy, the contradictions in the field of information security are particularly prominent. Viruses and anti-virus, hackers and anti-hackers, spam and anti-spam messages are always intertwined, and this is a long way to push the safety industry wheels forward.
With the continuous application of cloud computing and virtual technology, spam Mail has broken through the traditional form of transmission, and gradually locked the target in the enterprise mailbox. In the face of such a
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