Tag:firewall

  • Linux machine mutual login

    Time:2022-6-9

    Connect centos-01 in centos-02 virtual machine Check the load in centos-01 to see which device is connected #w Connect centos-01 in centos-02 #ssh 192.168.136.128 Viewing loads in centos-01 #w At this time, we found an additional 192.168.136.129, namely centos-02 Strict writing remote connection SSH [email protected] View current user #whoami #ssh [email protected] Strict writing of the […]

  • Use Charles to grab app packages

    Time:2022-6-8

    System environment: win10 1. download the software on Charles’ official websitehttps://www.charlesproxy.com/… The registration code is as follows: Help->Register Registered Name: https://zhile.io License Key: 48891cf209c6d32bf4 2. the firewall opens the Charles application networkControl panel – > all control panel items ->windows defender Firewall – > allow applications to communicate through Windows Defender firewall: check both the […]

  • Configuration scheme for VLAN interface of Hillstone firewall (latest version)

    Time:2022-6-2

    1. demand analysis First, the VLAN interface is a three-layer interface. VLAN interface is the outlet for external communication of all devices in VLAN. Generally, the IP address of VLAN interface is the gateway address of network devices in VLAN. When the intranet switch is configured with a VLAN type interface, and the firewall is […]

  • How to debug SSH connection

    Time:2022-5-25

    This article will introduce some quick methods and technologies that can be used to diagnose SSH connections, including when SSH cannot be connected, authentication errors, etc.Problem 1: SSH service is not runningA common cause of SSH connection errors is that the service is not running on the remote server. This may be caused by the […]

  • Implementation of firewall technology by iptables

    Time:2022-5-23

    This is my favorite teacher Yao’s experimental class for us. We have learned a lot of dry goods. Write a blog to record an important step forward on the road of information security learning! In fact, I wanted to continue to learn the vulnerability of eternal blue today, but because I haven’t finished my firewall […]

  • Implementation of iptables firewall technology

    Time:2022-5-22

    This is my favorite teacher Yao’s experimental class for us. We have learned a lot of dry goods. Write a blog to record an important step forward on the road of information security learning! In fact, I wanted to continue to learn the vulnerability of eternal blue today, but because I haven’t finished my firewall […]

  • Docker installation record under CentOS 7

    Time:2022-5-22

    Setup Toolkit sudo yum install -y yum-utils Replace domestic sources sudo yum-config-manager  –add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo ​ sudo sed -i ‘s/download.docker.com/mirrors.aliyun.com/docker-ce/g’ /etc/yum.repos.d/docker-ce.repo Install docker sudo yum install docker-ce docker-ce-cli containerd.io Firewall settings firewall-cmd –permanent –zone=trusted –add-interface=docker0 firewall-cmd –reload Error caused after setting failed to start daemon: Error initializing network controller: Error creating default “bridge” network: Failed to […]

  • Network protocol: still using HTTP proxy? Weak explosion! Try Socks5

    Time:2022-5-11

    brief introduction Existence is reasonable. The emergence of Socks5 is to solve the big problem that Socks4 does not support identity authentication. After all, we pay more and more attention to the security of the network. The network without authentication is like a life under the camera. It has no privacy. It’s really terrible. Today, […]

  • NFS server setup

    Time:2022-5-10

    Service installation yum install -y nfs-utils Configure shared directory #cat /etc/exports #Shared directory path setting authorization network segment setting permission /app/nfs-shared 192.168.10.0/24(rw,no_root_squash,sync,no_wdelay) Service startup and self startup systemctl start nfs systemctl enable nfs The firewall releases the network segment to be connected to NFS #firewall-cmd –permanent –add-rich-rule=”rule family=”ipv4″ source address=”192.168.10.0/24″ port protocol=”tcp” port=”111″ accept” firewall-cmd […]

  • Phabricator (code review) server installation and deployment

    Time:2022-5-9

    Phabricator is an open-source visual code review tool for Facebook. It integrates a series of open-source Web applications, including code review, code (GIT / SVN) hosting, syntax check, unit test, Wiki and other functions. It can also track bugs and directly associate JIRA with code review. It supports two code review workflows: “review” (review before […]

  • Linux 7 firewall shutdown method

    Time:2022-5-8

    RedHat Enterprise Linux 7 firewall closing method **In previous versions, the command to turn off services such as firewalls was** service iptables stop /etc/init.d/iptables stop **In rhel7, there is no such service** [[email protected] ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.0 (Maipo) [[email protected] ~]# service iptables stop Redirecting to /bin/systemctl stop iptables.service [[email protected] […]

  • 1. Build NTP time server

    Time:2022-5-4

    NTP server time NTP server is used for time synchronization of LAN servers, which can ensure that the time of all servers in LAN is consistent with that of time server. Some applications that require high real-time performance of time must unify the time. There are also many time servers on the Internet, such asntpdate […]