shiseido cdp

) displays relay information (mode, encapsulation, allow port, trim 、... ）Show interface trunk; (IOS)Show Spantree (CatOS) Displays the STP mode, type, status, and speed port of the port 、... ）Show Spanning-tree; (IOS)3. Discover information about neighboring Cisco devicesCDP (Cisco Discovery Protocol) is a proprietary protocol for Cisco that identifies directly adjacent Cisco device information, and CDP works on the 2nd tier.Show

FastEthernet0/0ip address 192.168.23.1 255.255.255.0ip verify unicast reverse-pathip nat insideip route-cache same-interfaceip route-cache policyduplex autospeed autono cdp enable! Interface Serial0/0 bandwidth 2048ip address specified parameter 255.255.252ip verify unicast reverse-pathno ip proxy-arpip nat outsiderate-limit input 2000000 20000 20000 conform-action transmit exceed-action dropip route-cache policyservice-policy output qos_policy_mapno

not encrypted during network transmission, strict control is required. For example, set a strong password, control the number of concurrent connections, strictly control the access address using the access list, and set user access control using AAA.8. We recommend that you use FTP instead of TFTP for iOS upgrade and backup and configuration file backup. For example:Router (config) # ip ftp Username blushinRouter (config) # ip ftp password 4tppa55w0rdRouter # copy startup-config ftp:9. Upgrade

: • Traffic and Protocol ACLs or filters • QoS tags and priority levels (control protocols are differentiated by corresponding service levels or DSCP values) • Selectively disable Layer 2 protocols on untrusted ports (for example, disabling DTP on access ports) • Configure the in-band Management port only on the dedicated VLAN • Avoid using VLAN 1 to transmit any data traffic Command example: Catalyst Operating System (CatOS) software Cisco IOS o Software UseVLAN 1Precautions The reason why VL

Background: 1. The relationship between the IP address and the MAC address in the ARP table of the layer-3 device. 2. the forwarding bridge table of the L2 device stores the correspondence between MAC and forwarding ports. 3. CDP (Cisco Discovery Protocol) is the link layer protocol for discovering adjacent devices between Cisco devices. 4. The forwarding table in the layer-2 module of a layer-3 switch is implemented in a cam table, such as sh

1. disable CDP (Cisco Discovery Protocol ). For example: Router (config) # No CDP run Router (config-If) # No CDP enable 2. Disable other TCP and UDP small services. Router (config) # No service TCP-small-servers Router (config) # No service UDP-Samll-servers 3. Disable the Finger service. Router (config) # No IP finger Router (config) # No servic

connections, use Access list to strictly control access to the address, you can use AAA to set User access control. 8,ios upgrades and backups, as well as backup of configuration files suggest using FTP instead of TFTP. Such as: Router (Config) #ip FTP username Blushin Router (Config) #ip ftp password 4tppa55w0rd Router#copy startup-config ftp: 9, timely upgrade and repair the iOS software. Second, the security configuration of router "Network Service" 1, the

. 4. Prevent viewing of router diagnostic information. Close the command as follows: No service tcp-small-servers no service udp-small-servers 5. Block the current list of users from viewing the router. The Turn off command is: no service finger. 6. Turn off CDP services. On the basis of the OSI two-layer protocol, which is the link layer, some configuration information of the End-to-end router can be found: device platform, operating system ver

FTP instead of TFTP. Such as: Router (Config) #ip FTP username Blushin Router (Config) #ip ftp password 4tppa55w0rd Router#copy startup-config ftp: 9, timely upgrade and repair the iOS software. [Page] Second, the Router Network Service security Configuration 1, the CDP (Cisco Discovery Protocol) is prohibited. Such as: Router (Config) #no CDP run Router (CONFIG-IF) # no

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. Upgrade and patch IOS software in a timely manner.Ii. vro Network Service Security Configuration1. disable CDP (Cisco Discovery Protocol ). For example:Router (Config) # no cdp runRouter (Config-if) # no cdp enable2. Disable other TCP and UDP Small services.Router (Config) # no service tcp-small-serversRouter (Config) # no service udp-samll-servers3. Disable th

power failure, the system implements the "password repair process" and then logs on to the vro to completely control the vro. 3. Protect the vro password. In the vro configuration file backed up, even if the password is stored in encrypted form, the plaintext of the password may still be cracked. Once the password is leaked, the network is completely insecure. 4. Check the router diagnostic information. The command to disable the service is as follows: no service tcp-small-servers no service ud

username BluShinRouter (Config) # ip ftp password 4tppa55w0rdRouter # copy startup-config ftp: 9. promptly upgrade and patch IOS software. Ii. vro Network Service Security Settings 1. disable CDP (Cisco Discovery Protocol ). For example, Router (Config) # no cdp run Router (Config-if) # no cdp enable www.2cto.com 2. Disable other TCP and UDP Small services. Rout

: fastEthernet0/0 Secur Ing Management plane services... disabling service authentication service padDisabling udp tcp small serversEnabling service password Authentication service tcp-keepalives-inEnabling service tcp-keepalives-outDisabling the cdp beyond the bootp serverDisabling the http serverDisabling the finger has source already reached arpHere is a sample Security Banner To be shownat every access to device. modify it to suit yourenterprise

password is stored in encrypted form, the plaintext of the password may still be cracked. Once the password is leaked, the network is completely insecure. 4. Check the router diagnostic information. The command to disable the service is as follows: no service tcp-small-servers no service udp-small-servers 5. The current user list of the vro is blocked. The command to close is no service finger. 6. disable CDP. On the basis of the OSI Layer 2 protocol

4tppa55w0rdRouter#copy startup-config ftp: 9. Upgrade and patch IOS software in a timely manner. Ii. vro Network Service Security Configuration 1. disable CDP (Cisco Discovery Protocol ). For example:Router (Config) # no cdp runRouter (Config-if) # no cdp enable2. Disable other TCP and UDP Small services.Router (Config) # no service tcp-small-serv

I. vro Network Service Security Configuration1. disable CDP (Cisco Discovery Protocol ). For example:Router (Config) # no cdp runRouter (Config-if) # no cdp enable2. Disable other TCP and UDP Small services.Router (Config) # no service tcp-small-serversRouter (Config) # no service udp-samll-servers3. Disable the Finger service.Router (Config) # no ip fingerRouter