cisco sec

"1" resolves the cisco switch password forgetting reset method:1, power off + the front panel hold down the mode key, and then re-power, always press the switch front panel port 1 indicates from green to off does not light off, automatically into the switch mode;2, input? See what configuration commands are (optional), enter "Flash-init" reset initialization, enter "Load-helper" to load the Help file, and see what "Dir flash" is in the Flash file. Fin

Ciscoasa (config) # Crypto key generate RSA modulus 1024Specifies the size of the RSA coefficients, the larger the value, the longer it takes to generate RSA, the Cisco recommends using 1024.Warning:you has a RSA keypair already defined named Warning: You have an RSA key pair defined by the named Do you really want to replace them? [yes/no]: YDo you really want to replace them? [Yes/no]:yKeypair generation process begin. Please wait ...The start of th

EnabledSwitch # Show interfaces status err-DisabledPort name Status reasonFa0/22 err-disabled link-flapFa0/37 for office in 100 k err-disabled link-flapFa0/41 unknow err-disabled link-flapFa0/42 training dc066 err-disabled link-flapFa0/45 Production Line VM err-disabled link-flapSwitch # sh errdisable flap-ValuesErrdisable reason flaps time (SEC)---------------------------------Pagp-flap 3 30DTP-flap 3 30Link-flap 5 10 (Link-flap is caused by poor li

What is Cisco Packet tracer?The Cisco Packet Tracer is a powerful network simulation tool for training in Cisco certifications. It gives us a good view of the interfaces of each router and network device, with many options, and we can use unlimited devices in the network just like with physical machines. We can create multiple networks in a single project for spe

There are a lot of users using Cisco routers, global debugging of Cisco routers here today I would like to introduce you, I hope to be useful to you. The boundaries of global and interface commands are obvious when conducting Cisco router configuration. In this case, we use the global to identify the commands that cannot be used for interface debugging or for sp

With the help of today's advanced smart enterprise networks, enterprises can effectively deploy e-commerce and other applications, thus realizing the optimized combination of labor and the globalization of business. These powerful networks can connect many remote sites, branch offices, mobile employees, partners and customers to provide services for thousands of users. However, there is still a problem that all networks are increasingly threatened by the increasing number of security risks on En

A few days ago, a switch cascade using a Cisco 2950 switch and a 100MB port of Tp-link 24 ports. Causes the Cascade ports on the Cisco 2950 device to be in use one day later, the next morning when the port shows err-disabled. The network is not working. How to deal with?To view the interface status:GX-SW-2950-01#SH Interfaces F0/2FASTETHERNET0/2 is off, line protocol was down (err-disabled)Hardware is Fast

Three attack methods bypass Cisco TACACS + Original article: 3 attacks on cisco tacacs bypassing In this article, the author introduces three methods to bypass TACACS on Cisco devices.No.1 DoS attacks bypass Cisco TACACS + No. 2 Local cracking PSK bypass Cisco TACACS + No. 3

The following are the modules supported by vswitch 4500: WS-F4531-Cisco Catalyst 4500 NetFlow service daughter WS-X4148-FE-LX-MT-Cisco Catalyst 4500 Fast Ethernet Switching Module, 48 Port 100BASE-LX10 Single-Mode Optical Fiber SMF) MT-RJ) WS-X4148-FX-MT-Cisco Catalyst 4500 Fast Ethernet Switching Module, 48 Port 100BASE-FX multimode fiber MMF) MT-RJ) WS-X4148-RJ

The market demand for Huawei routers and CISCO routers is very high. So I studied the differences between the configurations of Huawei routers and CISCO routers. I would like to share with you here, hoping to help you. The features and configuration interfaces of Huawei routers and CISCO routers of the same grade are exactly the same, and some of them have also b

Different types of switches use different module design methods. as a leader in the switch industry, the performance of Cisco switch modules is still very good and has been recognized by many people. Cisco switch module adaptive 1/2 Gbps interface: provides high-performance connections and is compatible with existing devices. The highest-performance inter-switch link (ISL) in the industry: A PortChannel sup

The original Article is from BlackSun. It is translated in sleep hours. This is a very good article and I am very happy to share it with you! Warning: Do not use this to damage the cisco system or access the system illegally. This article is for the purpose of learning. It can only be used for legal actions and cannot damage any system. This article will show you step by step how to use the discovered defects to obtain illegal access. If you break int

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 of the external interface required by DHCP can also be used as the PAT Global address. Th

No X2Input Flow-control is off, output Flow-control is offARP Type:arpa, ARP Timeout 04:00:00Last input never, output never, output hang neverLast clearing of "show interface" counters neverInput queue:0/2000/0/0 (size/max/drops/flushes); Total Output drops:0Queueing Strategy:fifoOutput Queue:0/40 (Size/max)5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec0 packets

Send Cisco commands via SNMPAn article by Fabio Semperboni Tutorial inShare136 Tweet In the article "How to save configurations using SNMP", I has explained how to get the Cisco configuration using SNMP. Now, I explain how to send commands via SNMP using the "Ciscoconfigcopymib" MIB; With this MIB, you can replace Running/startup configuration, send commands, save The "show" Output or reload the devic

Cisco 1800 is another core product launched by Cisco. But can this product have a place in the market, it depends on its own performance and whether it is the type of switch the customer needs. CISCO products are widely used by network users. understanding of their typical products and their characteristics can give a general understanding of network devices, the

The features and configuration interfaces of Huawei routers and CISCO routers of the same grade are exactly the same, and some of them have also been improved according to the needs of domestic users. For example, the configuration and debugging interface that can be switched between Chinese and English makes Chinese users no longer have to face a lot of professional English words. In addition, its software upgrade, remote configuration, backup center

1. Use jquery to implement the time timer, from a certain period of time to how many days from now how many minutes? How many seconds? HTML code: Copy Code code as follows: Distance to now time: Day Min Sec

It took a few days to write this blog, and the commands for configuring Cisco routers are more clearly written in the tutorials, but many commands remember that they may not be able to be used in the actual network of the enterprise, and I am here to introduce how to log in to the Cisco router using terminal equipment, How to access the configuration network, how to use some of the

How to view the Cisco spanning tree statusRole (roles):1.DESG (Specified port) 2. Root (Root port) 3. ALTN ( replace port)Sts (status):1. FWD (Forward) 2. BLK (Block) 3. bkn* 4.LRN (learning)zhc6506s_txzx2f_1#Show Spanning-tree interface gi 1/5Vlan Role Sts Cost PRIO.NBR Type------------------- ---- --- --------- -------- --------------------------------VLAN0025 DESG FWD 4 128.5 PeerVLAN0052 DESG FWD 4 128.5 PeerVLAN0053 DESG FWD 4 128.5 PeerVLAN0600