The IPv4 address of the SRV appliance in the lab is 100.68.X.30. Luckily Cisco IOS doesn’t default this way! Note that many network devices still ship to users with community string public allowing read-only access from the world, and community string private allowing read-write access from the world. We will also configure the SNMP community string on all our routers in our group. Simple Network Management Protocol (SNMP) If you still haven’t done this then the command to do so is no logging console. It is highly desirable (if not best practice) to disable logging to the router console. most detailed), create a 16K buffer on the router and store the most detailed logs there, and any logs sent to any log host (unconfigured) should be sent using syslog facility local4. This command set will set the log source interface to the Loopback 0 interface, trap level to debug (i.e. Each router team should configure logging defaults on their router to be as follows: no logging console However, the default logging set up is probably not optimal for Network Operators. Routers by default capture syslog data produce locally by various features in the IOS. By accessing this system you acknowledgeįor assistance, please contact +1 (234) 567-8901 Unauthorised access is forbidden and subject to criminalĪnd civil penalties. This system is the property of the Network Startup Resource Center In the real world it is better to have one which makes very clear that access is only for authorised personnel, something like this: banner login ^ The above banner is not very sophisticated, or helpful, or informative. Routing Infrastructure and Security Operations Workshop This example is a possibility: banner login ^ If you use an inappropriate greeting, expect the lab instructors to ask you to change it. Use an appropriate greeting – one that doesn’t give information away, and makes it very clear that access to the device is restricted to those with permission to do so. We will now set up a login banner for the routers in the workshop lab. Most Network Operators tend to customise this banner to be appropriate to their business. #STANDARD LOOPBACK ADDRESS FULL#Service timestamps debug datetime localtime msec show-timezone yearĬheck the log file from now on in the class - you will see that the log messages will have full information that you set for them just now.Ĭisco IOS by default has a simple welcome message when a new administrative connection to the router is opened. We will enable all of these for both debug and log messages, like this: service timestamps log datetime localtime msec show-timezone year Show-timezone Add time zone information to timestamp Localtime Use local time zone for timestamps IOS supports the following options: Router(config)#service timestamps log datetime ? To be most useful for any network operator, it is generally a good idea to turn all timestamp options on so that the most detail is recorded along with the log messages. This makes the cross comparison of logs much easier.ĭifferent IOS devices have different default settings for how the logging and debugging timestamps appear. Note that industry standard practice for many network operators running networks across multiple timezones is to set all the routers to UTC/GMT. The following sets the time zone for Australia (Australian Eastern Standard Time as found in Brisbane) with a UTC/GMT offset of +10. Note that only the first seven characters are used in any time display. The timezone command takes a string of characters – obviously set it to the local timezone. The router can be set with a time zone offset from UTC/GMT. The following examples are well know essentials for Cisco devices - modify and apply to suit network devices used in your day job. The following subsections implement basic good practices when setting up any network devices. All the exercises here apply to all the routers in the group - note that the Customer router has a different set of requirements, and these will be noted with each exercise as applicable. The purpose of this lab is to secure the router control plane before proceeding further with routing system security exercises. Securing Router Control Plane Routing Infrastructure and Security Operations Workshops
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