firewall configuration checklist

Because of the heavy use of Ubuntu12.04, unable to purchase hardware firewall, so use iptables for simple policy control;Ubuntu12.04 with the firewall software UFW, control services and ports very easy but for the strong iptables there is still a gap;So unloadApt-get Remove Ufw-yThis version of Ubuntu Iptables is very different from the Redhat configuration.

A typical iptables firewall must be used to configure data center security. Some server devices must expose public IP addresses and are vulnerable to attacks. Configure the hardware or software firewall to only open accessible ports and reject requests from other illegal IP addresses, including port scanning. Even refusing to ping... a typical iptables firewall m

Iptables is a built-in firewall in the Linux kernel that allows administrators to filter packets and NAT by setting table, chain, and related rules.In general, the Iptables firewall is already built into CentOS 6 and other Linux versions, and the Iptables service is started by default.Iptables is applied to IPV4, Ip6tables is required if you want to use IPV6.To view the current

I. Modifying host names1. Zero modification[Email protected] network-scripts]# hostname jw07And then you can see that our hostname has been modified.2. Permanently modify the host name[Email protected]/]# Hostnamectl set-hostname LiutaoRestart CentOS to see the changesTwo. How to turn off the CentOS firewall1. Zero-off[Email protected] ~]# Systemctl stop Firewalld.serviceWe can view the firewall status to see if the shutdown was successful[Email prote

Modify Linux system firewall configuration need to modify /etc/sysconfig/iptables If you want to open which port, add a -A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 3306-j ACCEPT On it, where 3306 is the port number to open, and then restart the Linux Firewall service. Linu

Shorewall is not a daemon program, it is a package to load iptables instructions, so please do not expect to use the ps-aux of such instructions to query its itinerary, the next part of each set of documents to explain the function and format. In essence, Shorewall is the iptables configuration tool. Because Iptables's grammar is obscure, commands are numerous, difficult to remember and understand. So configure the

-temp-path=/var/tmp/nginx/fastcgi--http-uwsgi-temp-path=/var/tmp/nginx/uwsgi--with-ld-opt=- Wl,-rpath,/usr/local/luajit/lib--add-module=/usr/local/soft/ngx_devel_kit--add-module=/usr/local/soft/ lua-nginx-module-0.9.152.3 Smooth Restart Nginx#kill-hup ' Cat/var/run/nginx/nginx.pid '#/usr/local/nginx/sbin/nginx-s Reload2.4 After download, unzip, move the NGX_LUA_WAF to the Conf directory of the Nginx installation directory and change the name to WAF# wget Https://github.com/loveshell/ngx_lua_waf/

H3C firewall L2TP configuration. Model H3C Firewal 100c A L2TP the local authentication mode configuration. 1.local-user user1 Password cipher 7-czb#/yx]kq=^q ' maf4 Service-type Telnet Terminal Level Interface ethernet0/0 IP address 192.168.1.1 255.255.255.0 Interface ETHERNET0/4 IP address 61.130.130.1 255.255.255.0

The purpose of Iptables configuration is to prevent Internet intrusion, and to allow internet peers to access the Internet. Before IPTABLES is configured, only the local machine can access the Internet. There is a "security level" in "system settings" of Rh8.0. it is mainly for the local machine and cannot be used to configure iptables. Open "security level" and assign it to "no firewall" level. For the pur

1, enter the character configuration interface: With a random console line, a computer serial port, a E1 port, on the computer to open the Super Terminal configuration, username, password are netscreen. 2, enter the Web configuration interface: Using a crossover cable to connect the E1 and the computer's network card, change the computer IP to 192.168.1.2 (the sa

1. Simple topology diagramLine import------line entrance (my room core switch)------My server terminal assigned IP101.251.65.33 101.251.65.34 || IP route 101.230.0.0 255.255.0.0 nextop 101.251.65.33Dedicated router2. Border Routing 3945 configurationDefine inside ports and zones (My Computer room intranet interface)Define the outside port and region (My computer room outside the network interface, is also the interface of the line access)Access-list 1 Permit 10.1.11.0 0.0.0.255 (allow intranet s