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Welcome to Jeremy’s IT Lab. This is\xa0\n
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If you like these videos, please\xa0\n
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Also, please like and leave a comment, and share\xa0\n
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videos. Thanks for your help. Also, remember\xa0\n
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get all of the lab files for this course, so\xa0\n
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If you want more labs like these, I highly\xa0\n
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It’s a network simulator with tons of guided\xa0\n
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know for the CCNA. Click the link in\xa0\n
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In this lab we’ll configure dynamic NAT as well\xa0\n
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the previous lab, so let’s get right into it.\xa0\n
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First let me configure the inside and outside\xa0\n
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This is the external interface, connected\xa0\n
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INTERFACE G0/1. IP NAT INSIDE. Now, I want to\xa0\n
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let me create an ACL that matches that source IP.\xa0\n
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So, anytime PC1, 2, or 3 sends traffic out\xa0\n
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I’ll create the address pool. The instructions\xa0\n
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100.0.0.1 and 100.0.0.2. So let’s make\xa0\n
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then 100.0.0.1 100.0.0.2, then NETMASK, and I’ll\xa0\n
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instructions say ‘from the 100.0.0.0/24 subnet’.\xa0\n
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IP NAT INSIDE SOURCE LIST 1 POOL POOL1. So,\xa0\n
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Next, let’s try to ping google.com from the\xa0\n
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DNS server, 8.8.8.8, first. PING 8.8.8.8. I just\xa0\n
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process first, as I’ve said many times before\xa0\n
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Okay, now let’s ping google.com. PING google.com.\xa0\n
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PING google.com. It works here too. Finally, PC3.\xa0\n
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Well, I only configured two public IP addresses\xa0\n
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used by PC1 and PC2, so PC3 can’t get a public\xa0\n
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DO SHOW IP NAT TRANSLATIONS. Okay, so there are\xa0\n
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has been mapped to 100.0.0.1,\xa0\n
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Now, the output in packet tracer is a little\xa0\n
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video. We have ICMP entries and UDP entries,\xa0\n
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mappings I showed in the lecture video aren’t\xa0\n
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packet tracer doesn’t always operate exactly as\xa0\n
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In the CCNA exam you might be asked to interpret\xa0\n
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be asked something like ‘which entries will\xa0\n
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Okay, so in step 3 we are going\xa0\n
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using R1’s public IP address,\xa0\n
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First I’ll clear the translations. DO CLEAR\xa0\n
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the instructions say to remove the current NAT\xa0\n
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DO SHOW RUN | INCLUDE NAT. Okay, so we have the\xa0\n
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Now, without deleting that I’ll enter IP NAT\xa0\n
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And now let’s check the running-config again. DO\xa0\n
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has been replaced, so there isn’t actually any\xa0\n
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Although, the pool still remains so you\xa0\n
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so that’s all we need for the PAT configuration,\xa0\n
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translate all traffic from 172.16.0.0/24 to the\xa0\n
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Let’s try it, I’ll ping google.com from\xa0\n
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Okay, and then PC2. PING google.com. Next\xa0\n
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PING google.com. Okay, this time it works. Now\xa0\n
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DO SHOW IP NAT TRANSLATIONS. Notice that all of\xa0\n
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are translated to the inside global address\xa0\n
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to keep track of the different communication flows\xa0\n
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Okay, in this lab we configured\xa0\n
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and then changed it to PAT\xa0\n
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That’s all for this lab. Next let’s take a look at\xa0\n
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Before finishing today’s video I want\xa0\n
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To join, please click the ‘Join’ button under the\xa0\n
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Njoku, Viktor, Roger, Raj, Kenneth, Seamus, H\xa0\n
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Gustavo, Anthony, Benjamin, Justin, Prakaash,\xa0\n
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Funnydart, Velvijaykum, Mark, Yousif,\xa0\n
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and Vance. Sorry if I pronounced your name\xa0\n
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support. This is the list of JCNP-level members at\xa0\n
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If you signed up recently and your name isn’t\xa0\n
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Thank you for watching. Please\xa0\n
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like the video, leave a comment, and share the\xa0\n
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If you want to leave a tip, check the links in the\xa0\n
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and accept BAT, or Basic Attention Token, tips\xa0\n
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