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Extended Ping Command on Cisco Routers
 
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This video describes the options under ping command and extended ping command in Cisco routers
Views: 15345 Networking Lab
Cisco Packet Tracer Ping and Tracert
 
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This video is using cisco packet tracer to observe packets across a network. Using ping and tracert to verify connectivity and view the path the data takes across the network.
Views: 38908 TDRobbins6
Cisco ASA Version 9 Advanced Ping commands and options
 
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Author, teacher, and talk show host Robert McMillen shows you the Cisco ASA Version 9 Advanced Ping commands and options
Views: 2236 Robert McMillen
Ping Troubleshooting on Cisco IOS
 
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https://nwl.cl/2wU7N6V - This lesson explains how you can use the ping command to troubleshoot (routing) issues in your network on Cisco IOS.
Views: 1134 Networklessons.com
CCNA And CCNP Cisco Tutorial:  Pings (And How To Stop Them!)
 
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Pings seem simple enough, but beyond the basics you need to know for the CCENT and CCNA exams, there's an extended ping as well. In this video, we'll use both the regular and extended pings. I'll also show you the "ping kill" keystroke that the Cisco IOS doesn't show you. When you're done watching this and my other videos here on YouTube, head out to http://www.thebryantadvantage.com/Tut... for over 250 free Cisco tutorials, videos, and practice exams. See you there! To your success, Chris Bryant CCIE #12933
Views: 23871 Chris Bryant
Simple PING commands
 
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Easy to follow examples to use PING to test your network connections to the internet, DNS, and your local area network. The PING command is a software tool. It is inherently part of the Windows Operating system. It is accessed by opening the Command prompt in Windows (aka; CMD or DOS window). Once inside the CMD prompt window, you can isssue the PING command in association with domain names, Internet IP addresses, or even local area network addresses. While the use of PING is a "networking 101" type of concept, even the most advanced Networking professionals use it on a regular basis.
Views: 1283 Network Advisor
Cisco router advanced ping commands
 
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Author and talk show host Robert McMillen explains the advanced ping commands for a Cisco router. This How To Video also has audio instruction.
Views: 3660 Robert McMillen
CCNA CCNP Cisco IP Connectivity Troubleshooting Study And Tips
 
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In today's video, we'll take a look at an IP connectivity issue between two hosts in the same subnet and examine several reasons they may not be able to communicate. Cisco router interfaces, VLANs, and trunking issues are discussed. Be sure to visit http://www.thebryantadvantage.com/Tutorials.htm for over 250 free Cisco tutorials, practice exams, Cisco video training, and more! To your success, Chris Bryant CCIE #12933 http://www.thebryantadvantage.com/
Views: 60669 Chris Bryant
Top 10 Routing Troubleshooting Commands you must know | CISCO Router Show Commands List 2018
 
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Top 10 Routing Troubleshooting Commands you must know | CISCO Router Show Commands list 2018 Download Networking Plus App: https://goo.gl/SQjBuH Download all the CCNA commands: http://www.learnabhi.com/top-10-routing-troubleshooting-commands/ Download Networking Plus App: https://goo.gl/SQjBuH Visit Website: http://www.learnabhi.com Follow me on: Facebook: https://www.facebook.com/learnabhisocial Instagram: https://www.instagram.com/learnabhi Twitter: https://www.twitter.com/learnabhi Website: https//www.learnabhi.com SUBSCRIBE to my Hindi Channel: https://www.youtube.com/learnabhi SUBSCRIBE to my English Channel: https://www.youtube.com/technicaltechabhi
Views: 2175 TECHNICAL TECH
ping tcp command in the Cisco ASA firewall
 
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Follow our channel at http://vid.io/xomJ Visit our web page at http://vid.io/xomQ I have just realized how powerful the "ping tcp"-command is in the Cisco ASA firewall. This command really has nothing to do with pings. What the command does is to send a TCP ACK-packet to a certain destination on a specific destination port. And wait for a SYN-ACK-packet in return. in its most simple form you can run ping tcp, a destination, and a port. In my example here I send a ping tcp to www.google.com on port 443. Like other pings in Cisco devices it defaults to 5 packets sent, but this can be changed with the repeat-parameter. As we can see here we got 5 exclamation marks which means that the firewall received 5 tcp SYN-ACKS from google. But it doesn´t stop there. The command can also spoof the source adress to emulate a packet sent thru the firewall. This firewall has two interfaces, one outside and one inside. The inside is addresses 10.0.0.1/24. In this topology there is currently no hosts on the inside. The outside is connected to internet and there is a dynamic NAT configured to hide the internal 10-network behinde the outside interface IP address. Let´s try the ping tcp-command with specifying a non-existant host on the inside. I run the command "ping tcp inside www.google.com 443 source 10.0.0.123 12345". I specify the inside interface in the command to tell the firewall that the packet comes from the inside interface. The 12345 in the end is the source port of the packet, the port number that in most cases is randomly selected by the source device. I run the command and get 5 replies back. That is good. But what really happened? I have a packet-capture running in the background recording packets on the outside interface. If we look at the result from the capture we can see that there was packet sent out, and received. Note that the source address of our outbound tcp-packets are the outside interface address of the firewall, because of the NAT. I have also verified with a packet-capture on the inside interface of the firewall that the SYN-ACK packets are not sent out on the inside interface. So what this commands does is to spoof the source address of the outbound TCP SYN-packet. It recognizes and presents the return-packet and do NOT send the return packet back to the spoofed source address. If I break the NAT-configuration of the firewall I can see that the ping does not get any replies back. Looking at the packet-capture on the outside shows that this is because the NAT-configuration is really used. Now the source-address is really the private 10-address and that´s why the return packet cannot find its way back to the firewall. The conclusion I draw from this is that the outbound packet is actually injected in the traffic flow bEFORE the NAT and access-list filtering instances. So it can be used to troubleshoot all kind of issues with the traffic flow, including bad ACL and NAT configuration. I really recommend you to play around with this command and have is as one of your troubleshooting tools. I will! Thanks for watching this video. Please visit my web site nat0.net for more network security related topics. See you!
Views: 4627 nat0.net
Protecting Your Cisco Router From Ping Attacks
 
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Protecting Your Cisco Router From Pings In a previous article Securing A Cisco Router: The Basics, I mentioned that one of my clients was using a Cisco router connected to the internet and my concern since they were not using a firewall. I showed them how quickly their router was located on the net and the ensuing pokes and prods from various people, applications and bots. In that same article I also shared that I suggested that they use a firewall, but they countered with all sorts of reasons why that was not feasible for them. In this article I want to share a configuration change that I suggested to them in lieu of a firewall. Of course nothing is a proper substitute than having a real firewall, but sometimes we need to make due with what we have. There are quite a few documents out there explaining how to harden your router. This specific one protects you from ICMP attacks or ping flooding. My client did not want to block pings all together since they use ping as part of troubleshooting and monitoring. I originally suggested a simple access list to only allow their management stations IP address but soon realized that this wouldn’t work in their environment. For example, they explained that sometimes they ping from home after hours or from their phones which makes the IP address fairly random. I showed them that they can limit the ping rate that the router will accept and suggested we test it to make sure it works as advertised. In the video below, I used hrping from www.cfos.de to ping the router excessively. Microsoft pings with a 1 second interval but with hrping, I can go as low as 1 millisecond. The Cisco commands I used are: access-list 111 permit icmp any any echo access-list 111 permit icmp any any echo-reply interface GigabitEthernet0/1 rate-limit input access-group 111 22000 22000 22000 conform-action transmit exceed-action drop I used Cisco counters, Wireshark and simple observation to see the impact of the configuration and it seemed to work just fine. As with all configuration changes, I suggested that they monitor the routers memory and CPU load to ensure that this change doesn’t have a negative impact on performance. Lovemytool Blog: http://www.lovemytool.com/blog/tony-fortunato/ Network Computing Blog: http://www.networkcomputing.com/author-bio.asp?author_id=2332 Garland Technology Blog: http://www.garlandtechnology.com/blog/author/tony-fortunato Youtube Channel: http://www.youtube.com/user/thetechfirm NEW: http://www.thetechfirm.tv Google Plus: http://plus.google.com/+Thetechfirmplus Network Computing Articles: http://tinyurl.com/h8orh26
Views: 5846 The Technology Firm
Configuring firewall rules for an icmp ping on cisco router
 
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Ping consists of an echo and echo reply packet. To allow the router to ping to a client, we permit an outbound echo and an inbound echo-reply from the client
Views: 1904 kdguntu
Basic Cisco Router commands
 
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Video on connecting the console cable is here: https://youtu.be/Z2-QHMQPqAU a simple video aimed at beginners, entry-level network techs, or network admins who are unfamiliar with the Cisco Command Line Interface (CLI). This short video will help you get access and at least give you some knowledge so that when you have to work with Cisco support, you will seem as though this is not your first time. The basic command covered in this video are: Enable Show Running Config Setup Config Terminal Write In this demonstration, I use Putty.exe as the program to setup the communications with the Cisco router. Putty.exe is free - just look for it. You can use Hyper Terminal if you have XP, but Hyper Terminal was taken out of future windows releases. ----------------------------------------------------------------------------- CONTRIBUTIONS to support Network Advisor: https://donorbox.org/network-advisor-expansion ------------------------------------------------------------------------------
Views: 151328 Network Advisor
Tcl-Script (Ping Test) on Cisco Routers
 
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This video shows how to use Tcl scripting shell to ping multiple network interfaces in a Cisco router environment
Views: 32927 Networking Lab
Basic Cisco Switch and Router Commands 4 - The "Show" commands
 
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This is the 4th in a set of videos that show very basic Cisco IOS commands. I look at a few basic IOS "show" commands.
Views: 36261 Richard Donnelly
7 Basic Cisco Router Commands You Should Know | Cisco 891 Router
 
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I am using a Cisco 891 Router for this demonstration. These are 7 Router Commands That Anyone With A Cisco Router Should Know: show version show int status show ip int bri show ip DHCP pool show flash show vlan-sw show ip DHCP binding
Views: 17152 DiscountGeeks
Basics of ipconfig, ping, tracert, nslookup, and netstat
 
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A quick tutorial to introduce basic network testing tools like ipconfig, ping, tracert, nslookup, and netstat. Cisco CCNA 1 http://danscourses.com
Views: 449343 danscourses
How to ping two routers in CISCO Packet Tracer
 
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ping two routers using CISCO packet tracer Follow Us on Gplus : https://plus.google.com/+howtis Like Facebook page: http://facebook.com/howtis Follow Us on Twitter: https://twitter.com/howtis For more how thing is: http://howtis.com
Views: 3431 How Tis
Network Troubleshooting using PING, TRACERT, IPCONFIG, NSLOOKUP COMMANDS
 
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Watch my complete Networking Tutorial Playlist: http://goo.gl/WXNhTr Video walkthrough for using the Command Prompt to troubleshoot network connectivity using 4 KEY COMMANDS: PING, TRACERT, IPCONFIG, NSLOOKUP ::::: RELATED VIDEOS :::::: Network Troubleshooting using Command Prompt: http://youtu.be/AimCNTzDlVo Create a Bootable USB Flash Drive using Command Prompt: http://youtu.be/gpgNKkoDPZA Learn to use Basic Command Prompt Commands: http://youtu.be/MNwErTxfkUA Introduction to Linux and Basic Linux Commands: http://youtu.be/IVquJh3DXUA Install Ubuntu Linux using a bootable USB Flash Drive: http://youtu.be/lIF8e_5F9B4
Views: 2458955 sakitech
Cisco IOS - show mac-address-table
 
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http://www.howtonetwork.net show mac-address-table is a very handy Cisco CCNA troubleshooting command. Here you learn how to use it to find an attached device or interface.
Views: 54367 Paul Browning
PING and TRACERT (traceroute) networking commands
 
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PING and TRACERT (traceroute) networking command line tools (cmd). How to ping websites. How to use the tracert command.
Cool Cisco IOS Commands - debug interface
 
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When you are performing debugs you have at least two concerns: 1) making sure the that debug does not clobber the CPU of your device, and 2) filtering the debug output to get to the information that you need for troubleshooting your issue. The debug interface command can help you with the second issue. In many cases (especially on production equipment) you may have a lot of interfaces running the protocol that you are troubleshooting. When you enable a debugging command (like debug ip ospf hello), the output that will be returned is for all interfaces running that protocol. This can quickly overwhelm you with information and make troubleshooting more difficult/time consuming. The debug interface command allows you to limit the debug output to a specific interface.
Views: 11115 packetlab
Common command on HP and Cisco Switches
 
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Walk through of vlan, IP, link aggregation, OSPF and BGP basics on both platforms
Views: 110216 HPNSwitching
Ping (icmp) blocking simulation on Cisco routers
 
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This is a basic tutorial to show you how to deny ping's from diferrent pc's in different network, In this example I used pc to pc ping blocking, but you can use it also like pc to server or anything else... Commands used are as follows: access-list 101 deny icmp host 172.17.27.1 host 10.10.10.2 access-list 101 permit ip any any interface Fastethernet 0/0 ip access-group 101 in
Views: 13254 leoniri20
Static routing tutorial - Cisco Packet Tracer
 
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Tutorial - HOw to configure routing using static IP address - Cisco Packet Tracer Transcription of commands Router 1 - R1 configuration commands 1. no 2. en 3. conf t 4. int fa0/0 5. ip address 192.168.1.1 255.255.255.0 6. no shut 7. int s0/0/0 8. clock rate 64000 9. ip address 192.168.2.1 255.255.255.252 10. no shut 11. exit 12. ip route 192.168.1.0 255.255.255.0 s0/0/0 Router 2 - R2 1. no 2. en 3. conf t 4. int fa0/0 5. ip address 192.168.2.5 255.255.255.252 6. no shut 7. ip route 192.168.1.0 255.255.255.0 s0/0/0 Generic PC 1 settings IP 192.168.1.2 Subnet mask 255.255.255.0 Gateway 192.168.1.1 Generic PC 2 - same like PC1 just IP address is 192.168.1.3 Server settings IP 192.168.2.6 Subnet mask 255.255.255.252 Gateway 192.168.2.5 After configuration you have to ping from PC1 or PC2 to Server using command: ping 192.168.2.6
Views: 202571 YT Video
Block Ping Cisco IOS
 
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Hello everyone, In this video we go over how to disable ICMP ping on a cisco IOS router Commands used in this video mancini-2600rtr-lab#conf t Enter configuration commands, one per line. End with CNTL/Z. mancini-2600rtr-lab(config)#access-list 101 deny icmp any any echo mancini-2600rtr-lab(config)#access-list 101 permit ip any any mancini-2600rtr-lab(config)#end mancini-2600rtr-lab#conf t Enter configuration commands, one per line. End with CNTL/Z. mancini-2600rtr-lab(config)#int f0/0 mancini-2600rtr-la(config-if)#ip access-group 101 in mancini-2600rtr-la(config-if)#end mancini-2600rtr-lab#
Views: 1562 sean mancini
Simple PING script using tcl on a Cisco router
 
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This is my first attempt at a video blog. I have loaded onto You tube so I can share it with friends.
Views: 8313 Micheal Garner
Cisco DHCP Server Configuration
 
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Cisco DHCP Server Configuration This video is a video on how to configure a Cisco router as a DHCP server. We also have a video on setting up a Cisco router as a DHCP relay. The link to that video is at the bottom of the description. Video Transcript: ------------------------------------- In this video we are going to learn how to configure a Cisco switch to be a DHCP server. Once we have that working, we will have another video showing you how to setup a Cisco router as a DHCP Relay Agent. Take a look at our network. Router1 is configured with the IP address 192.168.10.1 Printer1 is configured with the IP address 192.168.10.5 PC1 will get its IP via DHCP. We are going to configure Router1 to be a DHCP server with the following options: IP address range: 192.168.10.11 – 192.168.10.254 Default Gateway: 192.168.10.1 DNS Server: 4.4.4.4 The way Cisco does it you define the network that you want to hand out addresses for, in this case the 192.168.10.0 network, and all addresses in the network are given out. That would mean the addresses 192.168.10.1 through 192.168.10.255 would all be included in the range that is given out. If you have an address or range of addresses that you do not want to be given out by DHCP, like Printer1’s address or Router1’s address, you must exclude the addresses. We want to exclude 192.168.10.1 through 192.168.10.10 to account for Router1, Printer1, and any future network devices or servers. We will give out 192.168.10.1 as the default gateway and we will give out 4.4.4.4 as our DNS servers. Let’s get started…. First, we will check to make sure we can ping from Router1 to Printer1. Next, we will make sure our PC is configured to get an IP address via DHCP. Now let’s go into our Router and configure DHCP.   The first thing that we will do is enable the DHCP service. You do this in global configuration mode. Router1#conf t Router1(config)#service dhcp We will configure our pool later. I like to configure the addresses that I want to exclude from the pool first. This is to avoid an address being given out before it is excluded. We want to exclude 192.168.10.1 through 192.168.10.10. We do this from global configuration mode. Router1(config)#ip dhcp excluded-address 192.168.10.1 192.168.10.10 Now we create a DHCP pool. This is also done in global config mode. Router1(config)#ip dhcp pool NETWORK10 (Network10 is just a name that you choose to describe the pool) After entering the ip dhcp command, you will be placed in DHCP config mode and your prompt should change to: Router1(dhcp-config)# Let’s start with our options: To configure the default gateway address that will be given out we use the default-router command. Router1(dhcp-config)#default-router 192.168.10.1 To configure the DNS server we use the command dns-server ipaddress. Router1(dhcp-config)#dns-server 4.4.4.4 (NOTE: you can specify up to eight dns server by separating the ip addresses with a space) Now let’s define the network from which we are giving out addresses by using the network command. Router1(dhcp-config)#network 192.168.10.0 255.255.255.0 Now let’s see if PC1 gets an IP address and then test to see if we can PING the printer and server. -------------------------------------------- How To Configure a Cisco Router as a DHCP Server: http://youtu.be/OUee45pW0x8 How to Configure a Cisco Router as a DHCP Relay Agent. http://youtu.be/z3tq69xR1dg
Views: 23210 SkullBits
How to Ping in a Network Easy in Cisco Packet Tracer
 
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In Connected Network We can Check Computer Connection and Data Transmission By Ping You Can Download Cisco Packet Tracer Software And Practice the Networking Skill of Your Own
Views: 52 Tamil Tech Spectra
Deny ICMP or Ping using Access List extended on Cisco Router in Hindi  - CCNA ACL - Part 4
 
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Hindi Video by Jagvinder thind shows how to Configure Access List extended to Block ICMP protocol or Ping using extended ACL Access List on Cisco Router in Hindi. Extended access list configuration in packet tracer. CCNA Training Video In Hindi
Views: 31793 JagvinderThind
[Cisco CCNA Pratique] Protocole ICMP et Ping
 
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http://www.iplogos.fr/articles/ Venez télécharger le guide du futur certifié Cisco CCNA: http://www.iplogos.fr/cisco-ccna-guide-pour-les-futurs-certifies/
Views: 4909 IP Logos
CISCO Packet Tracer - Create network topology using hub and switch and analyze the ping command
 
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Creation of network topology using hub and switch and demonstration of ping command
Views: 6275 RKD Computer Science
Blocking Pings and ICMP Unreachables on Cisco Devices
 
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Learn how to block pings and ICMP unreachable messages on Cisco devices. Facebook: https://youtu.be/IYFVdxLeY3M
Views: 1785 Ayares Tech
Traceroute Command in Cisco Routers
 
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This video describes the both the simple traceroute and extended traceroute command on Cisco routers
Views: 9630 Networking Lab
How to do ping in Packet Tracer | Cisco
 
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Simple Example
Views: 877 Fedaa Amro
Ping two Computers in Cisco Packet Tracer
 
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in this tutorial we will create a simple network in which we will ping two computers 1.we need two pc's 2.we need a switch 3.we have to assign connections through straight cable 4.Assign IP address and subnet mask to pc;s 5.use ping command to check whether communication is established or not Thanku.
Views: 188 Ahsan Khan
Packet Traveling - How Packets Move Through a Network
 
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This video will illustrate everything that happens to describe how packets travel through a network. Specifically, we will look at every step to get a packet from a host, through a switch, then a router, then another switch, and finally to another host. This video is the series finale to an article series on Practical Networking.net that explains everything you need to know to understand how data moves through the Internet. You can read the Packet Traveling series here: http://www.practicalnetworking.net/series/packet-traveling/packet-traveling/ 0:00 Intro 0:45 Topology Introduction 1:43 ARP Tables, MAC Address Tables, Routing Tables 3:38 Packet from Host A to Host B 11:18 Response from Host B to Host A 14:11 Outro Here are the rest of the articles in the Series: OSI Model: http://www.practicalnetworking.net/series/packet-traveling/osi-model/ Key Players: http://www.practicalnetworking.net/series/packet-traveling/key-players/ Host to Host communication: http://www.practicalnetworking.net/series/packet-traveling/host-to-host/ Host to Host communication through a Switch: http://www.practicalnetworking.net/series/packet-traveling/host-to-host-through-a-switch/ Host to Host communication through a Router: http://www.practicalnetworking.net/series/packet-traveling/host-to-host-through-a-router/ Host to Switch to Router to Switch to Host: http://www.practicalnetworking.net/series/packet-traveling/host-switch-router-switch-host/ You can read more articles on Network Engineering and Network Security at Practical Networking: http://www.practicalnetworking.net/
Views: 160584 Practical Networking
Configuring Two Routers CLI in Cisco Packet Tracer
 
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Connect two routers via serial connection, (though other connections are discussed) including setting up an ip route to allow communication from the end devices.
Views: 61378 Zac Smith
Cisco router traceroute commands
 
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Author and talk show host Robert McMillen explains the traceroute commands for a Cisco router. This How To Video also has audio instruction.
Views: 4426 Robert McMillen
Cisco Packet Tracer Tutorial - Connecting 2 PC and 1 router
 
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Packet Tracer tutorial. This Youtube documentation videos, show you how to Connecting 2 PC and 1 router using Packet Tracer Software. 2 PC, Different NETwork-ID Visit blog http://gobloglagi.blogspot.com/ for other tutorial This Software use for network simulation.
Views: 65056 Lala Kaila
Cisco Packet Tracer: Práctica 25, Ping y Traceroute
 
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Enunciado: http://mikethegeek.jdevcloud.com/?p=131
Views: 592 MikeTheGeek
Configure Cisco Management VLAN - Assigning IP Address to VLAN LAN
 
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Small Tutorial on how to configure Management VLAN or Assign IP Addresss to VLAN
Views: 43003 INTEGRATION IT
How to access Cisco switch or router using Telnet | Command Prompt
 
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Hello friends, today in this video we will see how to access Cisco switch or router using the command prompt. follow me on https://www.facebook.com/alikhanstuff/
Views: 11520 Multi Care
How to enable ping on your cisco asa 5505 using ASDM 8.0
 
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Some time you want to test your connection by trying to ping an outside address. But by default the cisco asa 5505 doesn't allow the lower security interface to reach the higher (outside to inside). To change that behavior : Clic Configuration, Firewall, Service policies rules, Inspection, edit. Rules Action, Icmp, apply, save
Views: 51562 Patricia
How to ping IP Address in cisco
 
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How to ping IP Address in cisco
Views: 2027 KonKhemr Real
NAT Configuration on a Cisco Router (Port Address Translation): Cisco Router Training 101
 
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http://www.soundtraining.net/cisco-router-training-101 In this Cisco router tutorial, IT author and speaker Don R. Crawley shows you how to configure NAT overloading, also known as Port Address Translation or Dynamic NAT on a Cisco router. Using the command-line interface, you'll see how to configure each of the interfaces, plus an access-control list, and how to enable NAT on the outside interface. This video is based on chapter seven in the book The Accidental Administrator: Cisco Router Step-by-Step Configuration Guide (http://www.amazon.com/exec/obidos/ASIN/0983660727/ref=nosim/stnet-20).
Views: 72497 soundtraining.net
Cisco Show Interfaces Command
 
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This activereach Technical Tutorial video guides you through the various parts of the Cisco command "show interfaces" in detail. The show interfaces command might be used to check the status of your connection, or to see how much traffic is passing through your Cisco device. activereach Ltd: http://www.activereach.net
Views: 23602 activereach Ltd
2 Cisco routers & 2 clients in a simple 3 network layout -part4
 
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In this part, I reconfigure an interface and troubleshoot by testing for network connectivity with the ping command.
Views: 23977 danscourses