eg-253:networkq:654795
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eg-253:networkq:654795 [2012/12/06 10:02] – [Question 14] eechris | eg-253:networkq:654795 [2012/12/06 10:16] (current) – [Question 24] eechris | ||
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ip_forwarding = yes | ip_forwarding = yes | ||
+ | | ||
+ | **The system feature is called //IP forwarding// | ||
+ | |||
+ | --- // | ||
==== Question 17 ==== | ==== Question 17 ==== | ||
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icct@jupiter: | icct@jupiter: | ||
+ | **Because the question asks for the //file name//, a better answer would be '' | ||
- | + | Reproduce the contents of the file defined in [[# | |
- | | + | |
- | GNU nano 1.3.10 | + | |
ip_forward=yes | ip_forward=yes | ||
spoofprotect=yes | spoofprotect=yes | ||
syncookies=no | syncookies=no | ||
- | |||
- | |||
- | |||
- | |||
- | [ Read 3 lines ] | ||
- | ^G Get Help ^O WriteOut | ||
- | ^X Exit ^J Justify | ||
- | |||
- | |||
==== Question 19 ==== | ==== Question 19 ==== | ||
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up route add -net 192.168.3.0 netmask 255.255.255.0 gw 192.168.1.4 | up route add -net 192.168.3.0 netmask 255.255.255.0 gw 192.168.1.4 | ||
+ | |||
+ | **What about '' | ||
+ | |||
+ | --- // | ||
icct@jupiter: | icct@jupiter: | ||
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#auto eth2 | #auto eth2 | ||
#iface eth2 inet dhcp | #iface eth2 inet dhcp | ||
+ | |||
+ | **Yes, except, you should have reproduced the file for saturn!** | ||
+ | |||
+ | --- // | ||
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IRTT: Initial Round Trip Time, the Kernel uses this to guess about the best TCP Protocol parameters without waiting on answers. | IRTT: Initial Round Trip Time, the Kernel uses this to guess about the best TCP Protocol parameters without waiting on answers. | ||
IFace: Interface to which packets of this route will be sent | IFace: Interface to which packets of this route will be sent | ||
+ | | ||
+ | **Good idea to use the documentation for the definition, but what does it do in words that you and I could understand? | ||
+ | |||
+ | --- // | ||
==== Question 21 ==== | ==== Question 21 ==== | ||
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R: Interface is running | R: Interface is running | ||
U: Interface is up | U: Interface is up | ||
+ | | ||
+ | **If anything, the official documentation of '' | ||
+ | |||
+ | --- // | ||
==== Question 22 ==== | ==== Question 22 ==== | ||
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tcp 0 0 localhost.localdo: | tcp 0 0 localhost.localdo: | ||
- | The command -t displays all of the active TCP connections. A displays all active connections and the TCP and UDP ports on which the computer is listening. | + | The command -t displays all of the active TCP connections. A displays all active connections and the TCP and UDP ports on which the computer is listening. |
Combining them together gives the above output. | Combining them together gives the above output. | ||
+ | | ||
+ | **Good, that's what I was after for the previous two questions! Perhaps the documentation is better for '' | ||
+ | |||
+ | --- // | ||
===== Testing the Connectivity of your network ===== | ===== Testing the Connectivity of your network ===== | ||
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1 hyperion.saturn.icct.com (192.168.3.21) | 1 hyperion.saturn.icct.com (192.168.3.21) | ||
+ | **The question asks you to provide a route to another network. You should have used something on jupiter.icct.com or icct.com. There would then have been at least 2 hops.** | ||
+ | --- // | ||
==== Question 24 ==== | ==== Question 24 ==== | ||
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29 * * * | 29 * * * | ||
30 * * * | 30 * * * | ||
+ | | ||
+ | **How do you explain the no-reply status of hops 2-30? Do you think that there are there really 30 networks between hyperion.saturn.icct.com and www.swan.ac.uk? | ||
+ | --- // | ||
===== Extension Questions ===== | ===== Extension Questions ===== | ||
eg-253/networkq/654795.1354788130.txt.gz · Last modified: 2012/12/06 10:02 by eechris