Premise: With the development of the network, network security has become an important topic at present. More and more companies will choose to use the firewall as the company's egress device. Compared with the router, the firewall not only has the forwarding routing function, it can also filter internal and external traffic to further enhance the security of the company's network.
Tutorial topology:
650)
to use and deploy solutions.
Simple, high-speed, small office networking
The Cisco PIX 501 firewall provides a convenient way to share a broadband connection for multiple computers through its integrated, high-performance Quad-Port 10/100mbps switch. Also, the Cisco PIX Firewall
system is a protection mechanism based on adaptive Security Algorithm (ASA), which can provide a stateful firewall with connection-oriented capabilities. Using ASA,FWSM, you can create a connection table entry for a session stream based on the source and destination addresses, random TCP serial numbers, port numbers, and other TCP flags. FWSM can control the flow of all inputs and outputs by enforcing security policies on these join table entries.
FW
Configuration example of cisco router and layer-3 Switch environment, cisco layer-3 SwitchSimple environment configuration instance for cisco router layer-3 Switch
I. network topology:
Ii. configuration command:
1. vro Configuration:
Interface FastEthernet0/0
Ip address 10
An instance of VLAN configuration for Cisco L3 switches and L2 SwitchesCisco VLAN implementation is usually port-centric. The port connected to the node determines the VLAN in which it resides. There are two ways to allocate a port to a VLAN: Static and Dynamic. The process of creating a static VLAN is to forcibly allocate the port to a VLAN. That is, we first create a VLAN on The VTP (VLAN Trunking Protocol) server, and then assign each port to the c
-speed, small office networkingThe Cisco PIX 501 firewall provides a convenient way to share a broadband connection for multiple computers through its integrated, high-performance Quad-Port 10/100mbps switch. Also, the Cisco PIX Firewall can provide network address resolutio
, high-speed, small office networkingThe Cisco PIX 501 firewall provides a convenient way to share a broadband connection for multiple computers through its integrated, high-performance Quad-Port 10/100mbps switch. Also, the Cisco PIX Firewall can provide network address res
This article describes how to configure the IOS Firewall on a Cisco router. What should we pay attention to when configuring the firewall? The following article provides detailed answers.
Pre-configuration on R1, R2, and R3
R1 (config) # int e0/0R1 (config-if) # ip add 172.16.1.1 255.255.255.0R1 (config-if) # no shR1 (config) # ip route 0.0.0.0 0.0.0.0 172.16
logon password to cisco, as shown in the following figure:
PIX1 (config) # password cisco
PIX1 (config )#
This is the password required to access the PIX Firewall in addition to the Administrator.
Now, set the start mode password for administrator access.
PIX1 (config) # enable password cisco
PIX1 (config )#
No
Previous page Everyone talked about Cisco Basic Operation command switch, while dragon boat holiday, the Cisco simple switch configuration, and hope you share "Happy Dragon Boat Festival"! Ok, configure the switch, first, you must enter the global configuration mode
DHCP server.
The Debug DHCPC command provides error-correcting tools for the boot DHCP client feature.
The PIX firewall commands that are used to implement the DHCP client are described in the IP Address command page and the Debug command page of the Cisco PIX Firewall Command Reference. Please see these command pages for specific information.Note the IP address
How does a cisco switch find a loop? How to solve Loop Problems, cisco
How does a cisco switch find a loop? Loop Problem Solution
How can we intuitively and quickly determine whether a loop exists on a cisco
BASE-T Fast Ethernet, RJ45
PCI Slots: 3
Console port: RJ-45
Device Update processing: Using only small File Transfer Protocol (TFTP)
Failover port: DB-15 (RS 232)
Restricting softwareThe PIX 525, which contains limited software licenses, provides entry-level enterprise security and performance. The 525-r includes 128MB of RAM and can use up to 6 10/100 Fast Ethernet interfaces.
Unlimited softwarePIX 525, which contains unrestricted licenses, is designed for large enterprises an
CISCO router switch SNMPv2 configuration, cisco Router
Cisco router SNMP Configuration
Snmp-server community CQGASPZW-R RO // ro read-only
Snmp-server trap-source Loopback0 // use the loopbackaddress as the source address of the message sent by the trap.
Snmp-server host 50.1.50.3 version 2c CQGASPZW-R udp-port 9006 /
interface IP address from the host. If you are usingWindows 95 or Windows NT, click Start>run to start the Telnet session. For exampleIf the internal interface IP address is 192.168.1.1, enter the following command. Telnet 192.168.1.1
Step 2
The PIX firewall prompts you to enter a password:PIX passwd:Enter Cisco, and then press ENTER. You are logged on to the PIX firewall.The default passwor
Technical standards for VLANs IEEE 802.1Q was formally promulgated by IEEE Commissioners in June 1999, and the earliest Vlna technology was proposed by Cisco (Cisco) companies in 1996. With the development of the past few years, VLAN technology has been widely used in large and small enterprise networks, becoming the most popular Ethernet LAN technology at present. This article is going to introduce one of
Tags: Baidu search switch public Cisco errorCISCO 6500 Series SwitchesiOS version: Version 12.2 (SXJ)Exception logs for Cisco 6500 series switches: NRGYZ:ERROR:Database uninitialized, in addition to watching device performance, when viewing the history of device CPU usage, will find that the CPU is a lot of time to go to 100%!!!650) this.width=650; "title=" CPU U
, adding switches and end devices1, double-click switch into switch command line (CLI) mode, switch configuration mode by command2 in most cases for security reasons, you need to configure the switch privileged mode passwordValidation test3 Configuring the telnet login switchTo achieve remote login, first need to confi
security, management, and integrated Cisco IOS features
CISCO switch 2950 has several unusual features to improve network performance, manageability, and security. Network administrators can configure up to 64 virtual VLAN VLANs for each vswitch) to achieve higher data security and enhanced LAN performance. This ensures that data packets are transmitted only to
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