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<body class='hmmessage'><div dir='ltr'>Wow, you are definitely kind in sharing this. Would you mind taking some time and look through the following output from my machine?<br><br>paul@desk/paul-Lenovo ~ $ ifconfig -a | grep "inet addr"<br> inet addr:127.0.0.1 Mask:255.0.0.0<br> inet addr:192.168.1.13 Bcast:192.168.1.255 Mask:255.255.255.0<br>paul@desk/paul-Lenovo ~ $ ip addr | grep inet<br> inet 127.0.0.1/8 scope host lo<br> inet6 ::1/128 scope host <br> inet 192.168.1.13/24 brd 192.168.1.255 scope global wlan0<br> inet6 fe80::21c:10ff:fee5:2136/64 scope link <br>paul@desk/paul-Lenovo ~ $ <br><br>1. what do/does the line's above labeled 'scope' refer to? I understand that I am not using ipv6 at this point in time.<br><br>I will end this message with only the above question i'm amazed you took your time to actually type that out.<br><br>thanks,<br><br> --<br>paul g<br><br><div>Date: Tue, 3 Feb 2015 03:03:59 -0600<br>From: tclug@freakzilla.com<br>To: tclug-list@mn-linux.org<br>Subject: Re: [tclug-list] The cleaner:<br><br><pre>"Internet Protocol"? Paul, we invented abbreviations for a reason.<br> <br>Most likely your IP address is NATted via your router/cablemodem. You can <br>check this by using the "ifconfig" or "ip" commands on your computer. For <br>example:<br> <br>% ifconfig -a | grep "inet addr"<br> inet addr:192.168.0.74 Bcast:192.168.0.255 Mask:255.255.255.0<br> <br> <br>For some reason a bunhc of Linux distros are trying to replace this <br>completely functional command with the "ip" command, so:<br> <br>% ip addr | grep inet<br> inet 192.168.0.74/24 brd 192.168.0.255 scope global eth0<br> <br> <br>Now you'll see other addresses, too, most likely loopback (127.0.0.1) and <br>some ipv6 crap.<br> <br> <br>Now, like I said, your computer(s) are probably using non-routable <br>addresses which cannot be reached form the internet. If your IP address is <br>in one of the following networks, it is not accessible directly from the <br>internet:<br> <br>192.168.*<br>10.*<br>172.16.*<br>through<br>172.31.*<br> <br>You can go to <a href="http://ipchicken.com" target="_blank">http://ipchicken.com</a> to see your publically-viewable IP <br>address. You can compare that to what you see through the previous <br>commands.<br> <br>The address you see form the internet is likely your <br>router/cablemodem/whatever. THAT is accessible from the internet, but your <br>ISP is likely blocking many known ports. Comcast, for example, will be <br>blocking just about anything inbound.<br> <br> <br>Either way, securing a computer ranges from trivial stuff like <br>disabling/uninstalling any service you're not using (no need to run Apache <br>on your desktop, right? And no need to run telnet ANYWHERE EVER), to <br>complicated (building a separate firewall machine and putting it between <br>your router and internal computers).<br> <br>Like I said, this can get complicated, and you should secure your <br>computers either way, but most likely they cannot be accessed directly <br>from the internet without you installing special software for that (aka <br>malware).<br> <br>On Tue, 3 Feb 2015, paul g wrote:<br> <br>> 1. How secure is my home network when someone has my internet protocal<br>> address?<br>> <br>> 2. What measures can I take to secure my computer from becoming a victim?<br>> <br>> Thank you for your time,<br>> <br>> gobble gobble,<br>> ---<br>> paul g<br>> <br>> <br>> > Date: Tue, 3 Feb 2015 02:47:52 -0600<br>> > From: tclug@freakzilla.com<br>> > To: tclug-list@mn-linux.org<br>> > Subject: Re: [tclug-list] The cleaner:<br>> ><br>> ><br>> ><br>> > > which of course I know I should not do.<br>> ><br>> > CORRECT.<br>> > _______________________________________________<br>> > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota<br>> > tclug-list@mn-linux.org<br>> > <a href="http://mailman.mn-linux.org/mailman/listinfo/tclug-list" target="_blank">http://mailman.mn-linux.org/mailman/listinfo/tclug-list</a><br>> <br>><br></pre><br>_______________________________________________
TCLUG Mailing List - Minneapolis/St. Paul, Minnesota
tclug-list@mn-linux.org
http://mailman.mn-linux.org/mailman/listinfo/tclug-list</div> </div></body>
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