How to configure switch port security on cisco switches. Cisco smart ports, are they worth setting up or dont bother. Cisco catalyst 2960s and 2960 series switches, designed and engineered by cisco, provide optimum power. Slm2008 8 port gigabit smart switch with pd and ac power firmware update i believe cisco simply rebranded the slm2008 from the original lightblue and silver metal finished linksys device rather than releasing different hardware and chipset for their cisco branded slm2008. Ciscodefault smartport macros vary depending on the software version running on your switch. This menu gives you access to the main settings that you will. Cisco managed switches smart port issue technical support.
Cisco small business smart switches offer networking functionality similar to managed switches, without the management complexities. Cisco smart install is a transparent plugandplay technology to configure the cisco ios software image and switch configuration without user intervention. Try to test your switch port security configuration with ping command and testing with the rogue laptop on the lab. Ssm ldap configuration im trying to configure the smart software manager satellite to use ldap instead of local accounts, but i cant get this to work at present. Use this procedure to unregister from cisco smart software manager or cisco smart software manager satellite and release all the licenses from the current virtual account. The online reference guide templates provide the cli commands that you use to create smartport macros based on the use of the port. Cisco ios and ios xe software smart install remote code. The smart install client feature in cisco ios and ios xe software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a memory leak and eventual denial of service dos condition on an affected device. Cisco sg250x48p gigabit poe with 4port 10gigabit smart. Cisco smart install, opens up tcp port 4786, want it disabled hi, starting with ios version. The terms and conditions provided govern your use of that software. Configuring lldp, lldpmed, and wired location service cisco. The configuraton menu is available from the dashboard which is the tools main page. The vulnerability is triggered when an affected device processes a malformed smart install message on tcp port 4786.
All license entitlements used for the product are released back to the virtual account and is available for other product instances to use. The cisco discovery protocol cdp is a device discovery protocol that runs over layer 2 the data link layer on all cisco manufactured devices routers, bridges, access servers, and switches. If it does you can use the steps below to work around the ssl. Cisco ios and ios xe software smart install denial of service. It provides guidelines, procedures, and configuration examples. While this is not considered a vulnerability, psirt published a cisco security response on february 14, 2017 to inform customers about possible abuse of the smart install feature if it remains enabled after device installation. This could leave the involved devices susceptible to misuse of the feature. Cisco switch port security configuration and best practices. The sfsg 200 and sfsg 300 series managed switches and some other cisco switches have a smartport configuration that may cause digium phones and cyberdata devices to unregister and to timeout during sip registration. In recent weeks, cisco has published several documents related to the smart install feature. Aug 12, 20 accessing and managing your cisco smart switch using web gui btnhd.
How to back up and restore cisco router configs in the command. Cisco smart ports, are they worth setting up or dont. Given the heightened awareness, we want to minimize any potential confusion. Cisco has released software updates that address this vulnerability. The configure navigation menu has four options, smartports, port settings, express setup, and restartreboot. An attacker could exploit this vulnerability by sending crafted smart install packets.
An attacker could exploit this vulnerability by sending crafted smart install packets to tcp port 4786. An attacker could exploit this vulnerability by sending crafted smart install packets to tcp port. Cisco switch configuration using web console dummies. Take a fresh switch out of the box, rack it up, and the software will be upgraded to your standard, a base template configuration installed, and, if you like, a rudimentary backup performed for workgroup switch configurations. All interfaces in each etherchannel must be the same speed and duplex, and both ends of the. To practice and learn to configure port security on cisco switch, just download the port security packet tracer lab or create your own lab and follow the switch port security configuration guideline. The cisco discovery protocol cdp is a device discovery protocol that runs over layer 2 the data link layer on all ciscomanufactured devices routers, bridges, access servers, and switches. All interfaces in each etherchannel must be the same speed and duplex, and both ends of the channel must be.
It allows you to set up common configurations quickly, easily, and consistently. The smart install client feature in cisco ios and ios xe software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service dos condition on an affected device. Catalyst 4500 series switch software configuration guide, 15. Will there be any impact on cisco switchrouter configuration while disabling smart install, as the routerswitch are in production also kindly confirm if below are the best practice for disabling smart install on routerswitch 1 no vstack 2 block the traffic on tcp port 4786. Cisco ios and ios xe software smart install memory leak. Sep 20, 2017 cisco smart install smi provides configuration and image management capabilities for cisco switches. Cisco also provides a collection of pretested, ciscorecommended baseline configuration templates for catalyst switches. Cisco ios software smart install denial of service vulnerability. Cisco ios software smart install remote code execution. Configure smartport properties on a switch through.
When one of these generated commands is applied, pfc qos displays the messages caused by application of the command to all the ports controlled by the. Cisco software is not sold, but is licensed to the registered end user. This is the output of the show etherchannel summary on the cisco 6500. Catalyst 4500 series switch software configuration guide. Lets now see the basic portsecurity configuration on cisco switches. Get a smart account for your organization or initiate it for someone else. It enables features, settings and communication for network devices.
Cisco is aware of a significant increase in internet scans attempting to detect devices where, after completing setup, the smart install feature remains enabled and without proper security controls. Mar 19, 2019 you might not be able to apply the cisco phone smart port macro and other macros on ports that are controlled by the same port asic because of conflicting port trust state requirements. Oct 29, 2011 cisco smart install is a useful tool for helping with workgroup switch deployment. Cisco smart install smi provides configuration and image management capabilities for cisco switches. When applying the ciscophone smart port macro, note the following information. Catalyst 4500 series switch cisco ios software configuration guide, 12.
Cdpr is used to decode a cisco discovery protocol cdp packet, by default it will report the device id, the ip address of the device, and the port. Cisco psirt mitigating and detecting potential abuse of. Cisco content hub cisco connected grid 4port serial. You can use smart port macros to enable features and settings based on the location of a switch in the network and for mass configuration deployments across the network. Yup, thats it, cisco calls the configuration smart ports, im sure hp calls it something different, and ive only seen it in the cisco network assistant when connecting to the switches, but im sure you can command line config them too, i just dont like doing that. Cisco ios and ios xe software smart install denial of. Cisco ios software, c3560e software c3560eipbasek9m, version 15. Smart install is a plugandplay configuration and imagemanagement feature that provides zerotouch deployment for new switches. Smart network application sna is an innovative networklevel monitoring and management tool embedded in the cisco 100 to 500 series switches. Cisco ios software contains a vulnerability in the smart install feature that could allow an unauthenticated, remote attacker to cause a reload of an affected device if the smart install feature is enabled. Cdp allows network management applications to automatically discover and learn about other cisco devices connected to the network.
Cisco 1100 series software configuration guide, cisco ios. Each smart port macro is a userdefined set of cisco ios cli commands. Catalyst 2960 and 2960s software configuration guide, 12. It offers near realtime visibility and reporting of the cisco licenses you purchase and consume while giving securitysensitive organizations. Cisco smart install install, sync and backup workgroup switches. Ciscos smi documentation goes into more detail than well be touching on in this post, but the short version is that smi leverages a combination of dhcp, tftp and a proprietary tcp protocol to allow organizations to deploy and manage cisco switches. System configuration guide for cisco unified communications.
Cisco psirt has become aware of attackers potentially abusing the smart install smi feature in cisco ios and ios xe software. This example shows how to apply the cisco phone smart port macro to gigabit ethernet port 22 with vlan 2 specified as the access vlan and how to verify the result. The vulnerability is due to incorrect handling of image list parameters. Cisco smart install configuration guide ol2802701 1 smart install description smart install is a plugandplay configuration and imagemanagement feature that provides zerotouch deployment for new switches. Mar 29, 2020 this article describes how to configure switch port security on cisco switches. There arent any logs that i can see in the gui to help with, my settings are below can anyone see what i. Customers who have not done so are encouraged to follow guidance in the recommendations section of this notice.
Etherchannel bundles individual ethernet links into a single logical link that provides bandwidth up to 1600 mbps fast etherchannel, full duplex or 16 gbps gigabit etherchannel between two cisco catalyst switches. Accessing and managing your cisco smart switch using web gui btnhd. This means that a customer can ship a switch to a location, place it in the network and power it on with no configuration required on the switch. Mar 08, 2018 after installation, cisco unified communications manager runs under the 90day evaluation period. Cisco managed switches smart port issue posted by wayne t, last modified by wayne t on 09 may 2017 11. Cisco smart install install, sync and backup workgroup. Ciscos smi documentation goes into more detail than well be touching on in this post, but the short version is that smi leverages a combination of dhcp, tftp and a proprietary tcp protocol to allow organizations to deploy and manage. When you need to expand your network with more advanced deployments like realtime video or voice communications, or power over ethernet functionality, your cisco smart switch will be ready for the job. Smart port macros provide a convenient way to save and share common configurations. A smartport macro is a userdefined set of cisco ios command line interface cli commands.
Cisco smart install is a plugandplay configuration and imagemanagement feature that provides zerotouch deployment for new switches. Cisco 250 series switches are designed to be easy to deploy and use by small businesses or the partners that serve them. You can deploy and configure a complete business network in minutes with smart network application, findit. You can ship a switch to a location, place it in the network and power it on with no configuration required on the device. Slm2008 8port gigabit smart switch with pd and ac power firmware update i believe cisco simply rebranded the slm2008 from the original lightblue and silver metal finished linksys device rather than releasing different hardware and chipset for their cisco branded slm2008. At the end of the evaluation period, cisco unified communications manager stops allowing addition of new users or devices until registered with cisco smart software manager or cisco smart software manager satellite. To configure the switch so that you can connect an appropriate device to a port and have it work, follow these steps. Action required to secure the cisco ios and ios xe smart. Use this interface configuration macro when connecting a desktop device such as a pc with a cisco ip phone to a switch port. The vulnerability is due to improper validation of packet data. Ccsat cisco configuration security auditing tool is a tool for automated audit of configuration security of large numbers of cisco routers and switches. Attach rogue laptop to any unused switch port and notice that the link lights are. This macro is an extension of the cisco desktop macro and provides the same security and resiliency features, but with the addition of dedicated voice vlans to ensure proper treatment of delaysensitive voice traffic. Configuring smartport macros you can create a new smartport macro or use an existing macro as a template to create a new macro that is specific to your application.
Several researchers have reported on the use of smart install smi protocol messages toward smart install clients, also known as integrated branch clients ibc, allowing an unauthenticated, remote attacker to change the startupconfig file and force a reload of the device, upgrade the ios image on the device, and execute highprivilege cli commands. Cisco 1100 series software configuration guide, cisco ios xe everest 16. There arent any logs that i can see in the gui to help with, my settings are below can anyone see what i am doing wrong. How to configure management interface on cisco 2960x. A vulnerability in the smart install feature of cisco ios software and cisco ios xe software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service dos condition, or to execute arbitrary code on an affected device. Cisco content hub cisco connected grid 4port serial grwic. E, e14, e and e14 of each of the cisco nexus are attached to gi219, gi220, gi221 and gi222 of the cisco 6500 respectively theres a network diagram attached. System configuration guide for cisco unified communications manager, release 12. Some of the generated commands are in the category of pfc qos commands that are applied to all ports controlled by a port asic.
Cisco smart software manager onprem formerly known as cisco smart software manager satellite is a component of cisco smart licensing that works in conjunction with cisco smart software manager ssm. The gui tool, web console is provided to assist you in configuring your cisco switches. Apr 05, 2012 yup, thats it, cisco calls the configuration smart ports, im sure hp calls it something different, and ive only seen it in the cisco network assistant when connecting to the switches, but im sure you can command line config them too, i just dont like doing that. Smart install utilizes dynamic ip address allocation and. This means that a customer can ship a switch to a location, place it in the network and power it on with no configuration required on. When you enter the configuration of the cisco ios for a switch, the physical ports are logical interfaces, so you specify an interface by describing the physical location of a port. Selects the interface to configure and enters interface configuration mode.
Cisco 1100 series software configuration guide, cisco ios xe. This procedure also disconnects cisco unified communications manager cluster from cisco smart software manager or cisco smart software manager satellite. In this video i show you a step by step for the initial configuration of the switch. Verify port security is enabled and the mac addresses of pc1 and pc2 were added to the running configuration with show run command.
Dec 07, 2016 catalyst 4500 series switch software configuration guide, 15. After you create the macro, you can apply it to an interface or a range of interfaces. Given the heightened awareness, we want to minimize any. The cisco sg250x24k9na switch is a 24port gigabit and 4port 10 gigabit ethernet combo that provides seamless networking. Catalyst 4500 series switch cisco ios software configuration. Cisco smart install is a useful tool for helping with workgroup switch deployment. Cisco catalyst 2960s and 2960 series switches with lan. The cisco switch creates a management vrf virtual route forwarding routing table by default, so you will need to put the default gateway for that interface in the management vrf routing table. To configure the switch so that you can connect an appropriate device to.
1051 400 1148 397 1537 547 102 959 885 379 1410 1394 63 940 1008 1022 185 1499 1044 1495 508 832 210 548 54 1525 153 275 827 242 420 348 762 1186 729 863 697 952 53