The Cisco PIX Firewall installation process is as follows:
1. The PIX will be placed to the rack, after the detection of the power system connected to the power supply, and power on the host.
2. Connect the console port to the PC's serial port and run the HyperTerminal program from the console port into the PIX system; the system prompts pixfirewall>.
3. Input command: Enable, enter privileged mode, at this time the system prompts for pixfirewall#.
4. Input command: Configure terminal, initi
in the table
255# table: Locale table Save local interface address, broadcast address, NAT address maintained by system, user must not change
There are two ways to view the routing table:
IP Route List Table Table_number
IP Route List Table table_name
The correspondence between the routing table ordinal and the table name can be edited manually in the/etc/iproute2/rt_tables file. The routing table is added immediately, and the following is an example:
IP rout
I. Commands for setting network parametersIfconfig: Query, set network card and IP network and other related parameters[[emailprotected] ~]# ifconfig {interface} {down|up}[[emailprotected] ~]# ifconfig interface {options}interface:eth0、eth1、ppp0options:mtu、up,down、netmask、broadcast[[emailprotected] ~]# ifconfig eth0 192.168.10.11 netmask 255.255.255.128 mtu 8000修改文件参数[[emailprotected] ~]# vim /etc/sysconfig
A few methods of static configuration network1. ifconfig [Interface]-A: View all interfaces that include an inactive stateEnable or disable: Ifconfig IFNAME up|downor enable: Ifup IFNAMEDisabled: Ifdown IFNAMESet IP address: Ifconfig IFACE ip/netmask [up]Note: CIDR format masks, such as 172.18.0.1/16Or: Ifconfig IFACE IP netmask netmaskNote: The full format mask, such as 255.255.0.0The address is immediatel
In daily use. either server on. There are two addresses, two network card configuration, access to different network segments. Such a situation is a very common phenomenon. However, we need to add an extra to the routing table to determine which packets are sent through the correct gateway, and interface can communicate properly today to introduce you to the Linux operating system how to add routes (for Rhel series, test Platform for rhel5.4)First, use the route command to join a route added to
lo. If the packet that responds to the client is routed to the Eth0 interface, the ARP advertisement should be implemented through eth0, so the following configuration needs to be defined in the sysctl.conf file:#vim/etc/sysctl.confNet.ipv4.conf.lo.arp_ignore = 1Net.ipv4.conf.lo.arp_announce = 2Net.ipv4.conf.all.arp_ignore = 1Net.ipv4.conf.all.arp_announce = 2The above options need to be done before the VIP is enabled, otherwise you will need to empty the ARP table on the director to use LVS pr
1 ifconfig commandFormat: ifconfig {inerface} {options}The options parameters are: Up,down,mtu,netmask,broadcastSeparate ifconfig command: View all ports on the network;Example 1:ifconfig eth0 192.168.1.0 netmask 255.255.0.0 MTU 8000 (IP address of configuration port eth0)Example 2:ifconfig eth0:0 192.168.50.50 (indicates that a network interface is emulated in eth0)Note: The ifconfig configuration will onl
The following values are common in all basic configuration files:
* Device=name, where name is the name of the physical device (except for dynamically assigned PPP devices)
Its name is "logical name."
* Ipaddr=addr, here addr is the IP address.
* Netmask=mask, here Mask is a netmask.
* Network=addr, here addr is the network address.
* Broadcast=addr, here addr is the broadcast address.
* Gateway=addr
Introduction to Basic Network configuration method of Linux networkNetwork Information viewSet Network address:1You will see:1 device=eth02 bootproto=statics3 hwaddr=xx: 0C:£ º - :D 1:6f 4 onboot=Yes5 type=Ethernet6 ipaddr=192.168. 0.212 7 netmask=255.255. 255.0Bootproto=statics: Indicates that the static IP address is used.Onboot=yes: Indicates that the NIC is started when it is powered on.Take the dynamic IP address addressdevice=eth0 onboot=Yes Bo
What is an IP alias?In the words of Windows, you configure multiple IPs for a network card.When do I add IP aliases to what occasions?Web needs, multi-IP access testing, specific software for multiple IP needs ... and so on.HowHere are a few examples of how to use the Ifconfig command to configure an IP alias for a network card.For the configuration of the ip/mask/dns/Gateway/route, seeRouter/linux host/win The host's routing configuration summary. Note: Be aware that your configuration takes ef
Ipvsadm load Balancing on Ubuntu (DR Mode, 80 ports for example)Description: 3 Servers, IP: 10.0.1.2 10.0.1.3 10.0.1.4 Virtual ip:10.0.1.10Ipvsadm Server (10.0.1.2)$ sudo apt-get install Ipvsadm$ sudo ifconfig eth0:0 10.0.1.10 netmask 255.255.255.255 Broadcast 10.0.1.10$ sudo ip a (see if the settings are in effect)$ sudo route add-host 10.0.1.10 Dev eth0:0$ sudo route-n (see if the settings are in effect)$ sudo ipvsadm-a-T 10.0.1.10:80-s RR (note RR
, Vmnet2 simulate intranet. Through the gateway, we establish the VM2 and vm1 between the security port forwarding, that is, vm2 to gate to achieve encrypted transmission, and gate to VM1 due to the intranet, we assume its security, do not need encryption.
Third, the experiment steps:
1, the establishment of LAN VLAN:
1.1, add a subnet VMnet2 for VMware
The operation is as follows:
Edit→virtual Network Settings→host Virtual adapters Add a subnet vmnet2→ set network IP to mapping in Host Virtu
IfconfigThe syntax for ifconfig is:
Ifconfig [-A] [-v] [-S] [[]
]
[[-]broadcast [
]]
[Netmask
]
[Up|down]
Where interface for the network card name, address for IP addresses, broadcast to set the broadcast address, followed by the address for broadcast addresses IP, netmask to set the subnet mask, then address for the subnet mask IP, up and down settings Current network card status, up indicates the
/etc/sysconfig/network includes host basic network information for system startup
/etc/sysconfig/network-script/This directory is the system to start the most initialized network information
/etc/sysconfig/network-script/ifcfg-eth0 Network configuration information
/ETC/XINETD.CONF defines a network service initiated by the super process xinetd
/etc/protocols set the protocol for the host to use and the protocol number of each protocol
/etc/services set the host's different port network ser
File:/etc/sysconfig/network-scripts/ifcfg-eth0
The following values are common in all basic configuration files:
* Device=name, where name is the name of the physical device (except for dynamically assigned PPP devices)
Its name is "logical name."
* Ipaddr=addr, here addr is the IP address.
* Netmask=mask, here Mask is a netmask.
* Network=addr, here addr is the network address.
* Broadcast=addr, her
This article basically realizes OOPS+PF to realize transparent proxy, oops other authentication, bandwidth management is useless, hope to be able to give a comment, willing to please use the Oops of the master advice! Thank you.
installation process
1, cd/usr/ports/www/oops/
Make config check
[X] DB4 Berkeley DB v4 Storage
Make install clean
2, modify/usr/local/etc/oops/oops.cfg
3,cd/usr/local/sbin/
Oops-z-c/usr/local/etc/oops/oops.cfg (create its disk cache)
4,vi/etc/rc.conf Join oops_
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