Need some advice on learning networking

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  • BillyCarpenter
    Field Supervisor

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    • Aug 2020
    • 16308

    #376
    Re: Need some advice on learning networking

    I now have a MUCH better understanding of the different roles a server can play in a network environment. When they talk about DNS on a server, they're not talking about resolving host names to an IP address on the internet. No, they're talking a local domain on the network. And on that local domain the server basically takes over many functions from the PC and router. I'm talking about security settings, passwords, level of access, DHCP, ect.

    The administrator can set up group policies for users or computers. There are security features out the ass on Windows Server 2019. Even the way you log in is different.

    I have a long way to go but as they say, Rome wasn't built in a day.
    Adversity temporarily visits a strong man but stays with the weak for a lifetime.

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    • bsm2
      IT Manager

      25,000+ Posts
      • Feb 2008
      • 29727

      #377
      Re: Need some advice on learning networking

      You need more help with
      understanding DNS

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      • tsbservice
        Field tech

        Site Contributor
        5,000+ Posts
        • May 2007
        • 7952

        #378
        Re: Need some advice on learning networking

        Originally posted by BillyCarpenter
        ...I have a long way to go but as they say, Rome wasn't built in a day.
        True that. Nobody knows everything. This thread rise unbelievably long yet still entertainment to read..
        A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
        Blessed are they who can laugh at themselves, for they shall never cease to be amused.

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        • BillyCarpenter
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          • Aug 2020
          • 16308

          #379
          Re: Need some advice on learning networking

          I'm getting a little deeper into Windows Server 2019. I've learned that it still uses Windows Defender Firewall. But it's different in that the Administrator can apply different rules for different PC's.

          For instance: Lets say there's a company called ABC Car Dealer. Inside of that company there are 3 different departments: 1)Administrative 2) Sales Staff 3)Repair Center

          From the server the administrator can allow File & Printer Sharing for the Administrative department and Sales Staff but block it for the Repair Center.

          If you're a copier tech and you go to install 1-copier in each department...you'll be able to set up Scan to Folder with no problem in the Administrative Dept and for Sales Staff, but it's not gonna work in the Repair Center until the IT guy enables File & Printer Sharing.


          It's interesting to get a look under the hood of a server.

          That's all for now.
          Adversity temporarily visits a strong man but stays with the weak for a lifetime.

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          • BillyCarpenter
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            • Aug 2020
            • 16308

            #380
            Re: Need some advice on learning networking

            Also, its been mentioned on here that a tech was doing an install and was given an IP address for the copier but couldn't ping it and it stil worked fine.

            The reason for that is the IT Admin had disabled Protocol ICMPv4 for that particular IP address. Ping uses ICMPv4 to ping an IP address.
            Last edited by BillyCarpenter; 12-28-2020, 10:05 AM.
            Adversity temporarily visits a strong man but stays with the weak for a lifetime.

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            • KenB
              Geek Extraordinaire

              2,500+ Posts
              • Dec 2007
              • 3944

              #381
              Re: Need some advice on learning networking

              Originally posted by BillyCarpenter
              Also, its been mentioned on here that a tech was doing an install and was given an IP address for the copier but couldn't ping it and it stil worked fine.The reason for that is the IT Admin had disabled Protocol ICMPv4 for that particular IP address. Ping uses ICMPv4 to ping an IP address.
              Trivia question: What port number (if any) does ping.exe use by default? You have 30 seconds... and NO Googling!
              “I think you should treat good friends like a fine wine. That’s why I keep mine locked up in the basement.” - Tim Hawkins

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              • BillyCarpenter
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                • Aug 2020
                • 16308

                #382
                Re: Need some advice on learning networking

                Originally posted by KenB
                Trivia question: What port number (if any) does ping.exe use by default? You have 30 seconds... and NO Googling!

                LOL. I'm not gonna lie to you...I don't know.
                Adversity temporarily visits a strong man but stays with the weak for a lifetime.

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                • Tricky
                  Field Supervisor

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                  • Apr 2009
                  • 2620

                  #383
                  Re: Need some advice on learning networking

                  Originally posted by KenB
                  Trivia question: What port number (if any) does ping.exe use by default? You have 30 seconds... and NO Googling!
                  Good question got me thinking I mean googling, got any more?

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                  • KenB
                    Geek Extraordinaire

                    2,500+ Posts
                    • Dec 2007
                    • 3944

                    #384
                    Re: Need some advice on learning networking

                    Originally posted by skynet
                    Good question got me thinking I mean googling, got any more?
                    The answer: None. It was a trick question.

                    Billy's post about ICMP got me thinking about it. I've had this issue come up many times before.

                    Rather than me copying and pasting, check out the site below. Yeah, I Googled it. Sue me.

                    How To Ping Specific Port Number – devconnected
                    “I think you should treat good friends like a fine wine. That’s why I keep mine locked up in the basement.” - Tim Hawkins

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                    • BillyCarpenter
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                      • Aug 2020
                      • 16308

                      #385
                      Re: Need some advice on learning networking

                      Originally posted by KenB
                      The answer: None. It was a trick question.

                      Billy's post about ICMP got me thinking about it. I've had this issue come up many times before.

                      Rather than me copying and pasting, check out the site below. Yeah, I Googled it. Sue me.

                      How To Ping Specific Port Number – devconnected

                      Good info in that article. It mentioned telnet. I've been using that a lot for troubleshooting SMTP. I've found it very useful. I talked about it in this thread.

                      Edit: I actually used telnet to send an email.


                      Edit 2: I've been meaning to thank Ken for turning me on to VMware. It's the greatest thing since sliced bread. You can build a virtual network with multiple servers. Thank you.
                      Adversity temporarily visits a strong man but stays with the weak for a lifetime.

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                      • tsbservice
                        Field tech

                        Site Contributor
                        5,000+ Posts
                        • May 2007
                        • 7952

                        #386
                        Re: Need some advice on learning networking

                        Originally posted by BillyCarpenter
                        Good info in that article. It mentioned telnet. I've been using that a lot for troubleshooting SMTP. I've found it very useful. I talked about it in this thread.

                        Edit: I actually used telnet to send an email.
                        Although I agree on using telnet for troubleshooting scan to email problems, telnet client should be first turned on in Windows features which may be sometimes problematic on users PCs.
                        A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
                        Blessed are they who can laugh at themselves, for they shall never cease to be amused.

                        Comment

                        • BillyCarpenter
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                          #387
                          Re: Need some advice on learning networking

                          Originally posted by tsbservice
                          Although I agree on using telnet for troubleshooting scan to email problems, telnet client should be first turned on in Windows features which may be sometimes problematic on users PCs.

                          Everything I'm doing is on my computer lab. I haven't actually used it in a customers office. Yes, I had to enable Telnet on my PC. Thus far I haven't encountered any problems. What type of problems are you referring to? The last thing I want to do is create a problem.
                          Adversity temporarily visits a strong man but stays with the weak for a lifetime.

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                          • KenB
                            Geek Extraordinaire

                            2,500+ Posts
                            • Dec 2007
                            • 3944

                            #388
                            Re: Need some advice on learning networking

                            Originally posted by BillyCarpenter
                            Good info in that article. It mentioned telnet. I've been using that a lot for troubleshooting SMTP. I've found it very useful. I talked about it in this thread.

                            Edit: I actually used telnet to send an email.


                            Edit 2: I've been meaning to thank Ken for turning me on to VMware. It's the greatest thing since sliced bread. You can build a virtual network with multiple servers. Thank you.
                            You're quite welcome.

                            I actually spend most of my time in a Ubuntu Linux VM, so I can keep my Windows 10 machine as "cootie-free" and clean as possible. I only use Windows when I have to, and normally in a Server 2019 VM.

                            My next step is to get some more RAM so that I can run both VMs at the same time. With only 12 GB, it's a bit sluggish. Santa didn't bring me any for Christmas, so I guess I'll have to buy it on my own.
                            “I think you should treat good friends like a fine wine. That’s why I keep mine locked up in the basement.” - Tim Hawkins

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                            • BillyCarpenter
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                              #389
                              Re: Need some advice on learning networking

                              Originally posted by KenB
                              You're quite welcome.

                              I actually spend most of my time in a Ubuntu Linux VM, so I can keep my Windows 10 machine as "cootie-free" and clean as possible. I only use Windows when I have to, and normally in a Server 2019 VM.

                              My next step is to get some more RAM so that I can run both VMs at the same time. With only 12 GB, it's a bit sluggish. Santa didn't bring me any for Christmas, so I guess I'll have to buy it on my own.

                              Right now I'm running 2 Windows 2019 VM servers and it's definitely sluggish. I have a friend that has built several PC's for me. I think I'm gonna have him build me a PC powerful enough to run several VM's. It's such a great tool for learning. I've trashed several virtual operating systems by experimenting and it's easy to just delete and start over. I've become a damn expert on VMware. lol
                              Adversity temporarily visits a strong man but stays with the weak for a lifetime.

                              Comment

                              • KenB
                                Geek Extraordinaire

                                2,500+ Posts
                                • Dec 2007
                                • 3944

                                #390
                                Re: Need some advice on learning networking

                                Originally posted by BillyCarpenter
                                Right now I'm running 2 Windows 2019 VM servers and it's definitely sluggish. I have a friend that has built several PC's for me. I think I'm gonna have him build me a PC powerful enough to run several VM's. It's such a great tool for learning. I've trashed several virtual operating systems by experimenting and it's easy to just delete and start over. I've become a damn expert on VMware. lol
                                I used to support a bunch of different software, including RightFax, Equitrac, AutoStore, Streamline, eCopy, Laserfiche and others, where I needed a demo copy running in the office to test with and use in customer demos.

                                We were able to get a server with a lot of RAM, where we had at least 10 different server VMs running, normally 5 or 6 at a time.

                                A lot of these software solutions didn't play nice together, so they had to be run on separate servers.

                                If a VM ever got funky, it took only minutes to spin up a new one.
                                “I think you should treat good friends like a fine wine. That’s why I keep mine locked up in the basement.” - Tim Hawkins

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