blacklisted ip

The TCP/IP network communication software package uses remote access commands. These commands were first developed for Arpanet by UC Berkely. It allows you to remotely register to another system and copy files from one system to another. You can obtain information about a system, such as who is currently registering for use. When calling a system address, these remote commands use the domain name or IP addr

One Nic is bound to multiple IP addresses and multiple NICs are configured with one IP address. Commonly used is "one Nic is bound to multiple IP addresses" One Nic is bound to multiple IP addresses Linux network device configuration files are stored in/etc/sysconfig/network-scripts,For the first network device over E

Disable a single IP Address // Add IP address access restrictions If (getenv ('HTTP _ CLIENT_IP ') strcasecmp (getenv ('HTTP _ CLIENT_IP'), 'unknown ')){ $ Userip = getenv ('HTTP _ CLIENT_IP '); } Elseif (getenv ('HTTP _ X_FORWARDED_FOR ') strcasecmp (getenv ('HTTP _ X_FORWARDED_FOR'), 'unknown ')){ $ Userip = getenv ('HTTP _ X_FORWARDED_FOR '); } Elseif (getenv ('remote _ ADDR ') strcasecmp (getenv ('re

Public ipThe mail system is used as a metaphor. There is a public ip address, which means you have a detailed address. You can write a letter to someone else, or someone else can use this address to communicate with you. Now let's take a look at the situation where no public ip address is available. This is like living in a large courtyard. all incoming and outgoing emails are transferred by the transfer r

1 private void GetIP ()2 { 3 string hostName = Dns.gethostname ();//native name 4 //system.net.ipaddress[] AddressList = Dns.gethostbyname (HostName). AddressList; Warns that gethostbyname () has expired, I run and returns only one IPV4 address 5 system.net.ipaddress[] AddressList = dns.gethostaddresses ( HostName); All addresses are returned, including IPV4 and IPv6 6 foreach (IPAddress IP in AddressList) 7

Someone asked me on the internet how to disable ip access in php. through tests, I found that the following code is good and the principle is relatively simple. // Add IP address access restrictions If (getenv ('http _ CLIENT_IP ') strcasecmp (getenv ('http _ CLIENT_IP'), 'Unknown ')){ $ Userip = getenv ('http _ CLIENT_IP '); } Elseif (getenv ('http _ X_FORWARDED_FOR ') strcasecmp (getenv ('http _ X_FORW

Through Nginx reverse proxy, will not get the real IP, is to obtain the Nginx IP, to get the real IP to be configured nginx configuration file: nginx.conf Proxy_set_header X-real-ip $remote _addr; For example: ######################################################################## #要转发地域名: Upstream t.csdn.com {

Code used in PHP to restrict access to IP segments and prohibit IP address submission forms. We only need to add the following code in feedback. php to judge. Note: The following is only an example code for php ip address restriction. if you want to apply the code to CMS, you can modify it as long as you add the following code to feedback. php for determination.

To introduce a software angry IP scanner, this software is the most useful is to scan a network segment of the IP of each host. By using discovery, the principle is to quickly ping each IP and, if there is a host, get the host's username, IP, and port.and detailed introduction See official website [Angry

We just need to add the following code in the feedback.php to judge it. Note: The following is just a PHP restricted IP instance code, if you intend to apply to the CMS, please modify it yourself, or if you are using DEDECMS, you can contact the site. Copy CodeThe code is as follows: Add IP Access Restrictions if (getenv (' http_client_ip ') strcasecmp (getenv (' http_client_ip '), ' unknown ') { $useri

Disable a single IP Address// Add IP address access restrictionsIf (getenv ('HTTP _ CLIENT_IP ') strcasecmp (getenv ('HTTP _ CLIENT_IP'), 'unknown ')){$ Userip = getenv ('HTTP _ CLIENT_IP ');} Elseif (getenv ('HTTP _ X_FORWARDED_FOR ') strcasecmp (getenv ('HTTP _ X_FORWARDED_FOR'), 'unknown ')){$ Userip = getenv ('HTTP _ X_FORWARDED_FOR ');} Elseif (getenv ('remote _ ADDR ') strcasecmp (getenv ('remote _