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Linux/Network Interfaces - Revision history
2026-06-19T14:33:35Z
Revision history for this page on the wiki
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https://charlesreid1.com/w/index.php?title=Linux/Network_Interfaces&diff=9483&oldid=prev
Admin at 23:47, 14 March 2016
2016-03-14T23:47:37Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:47, 14 March 2016</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This allows you to connect to a wireless network and enter information into corresponding fields, or to set the details of a static IP address for your network for a particular device. When editing an ethernet connection (like the eth0 device) you will see an IPv4 configuration option. If you pick "Show," you can enter an IP address, a gateway, a DNS server, etc.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This allows you to connect to a wireless network and enter information into corresponding fields, or to set the details of a static IP address for your network for a particular device. When editing an ethernet connection (like the eth0 device) you will see an IPv4 configuration option. If you pick "Show," you can enter an IP address, a gateway, a DNS server, etc.</div></td></tr>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">See [[Template:LinuxNetworkingFlag]]</ins></div></td></tr>
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Admin
https://charlesreid1.com/w/index.php?title=Linux/Network_Interfaces&diff=9482&oldid=prev
Admin: /* ping */
2016-03-14T23:47:06Z
<p><span dir="auto"><span class="autocomment">ping</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:47, 14 March 2016</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l6">Line 6:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You managed to run ping. You have even figured out how to use the <code>-c</code> flag to ping a specific number of times. But if it doesn't work, then what?</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You managed to run ping. You have even figured out how to use the <code>-c</code> flag to ping a specific number of times. But if it doesn't work, then what?</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Start by checking your networking configuration<del style="font-weight: bold; text-decoration: none;">.</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Start by checking your networking configuration<ins style="font-weight: bold; text-decoration: none;">, which is contained in this file:</ins></div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><pre></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><pre></div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><pre></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><pre></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"># </del>vim /etc/network/interfaces</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">$ </ins>vim /etc/network/interfaces</div></td></tr>
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Admin
https://charlesreid1.com/w/index.php?title=Linux/Network_Interfaces&diff=9481&oldid=prev
Admin: Created page with "This page covers basic network interfaces, and how to troubleshoot them when they don't work. ==ping== You managed to run ping. You have even figured out how to use the <co..."
2016-03-14T23:46:46Z
<p>Created page with "This page covers basic network interfaces, and how to troubleshoot them when they don't work. ==ping== You managed to run ping. You have even figured out how to use the <co..."</p>
<p><b>New page</b></p><div>This page covers basic network interfaces, and how to troubleshoot them when they don't work.<br />
<br />
<br />
==ping==<br />
<br />
You managed to run ping. You have even figured out how to use the <code>-c</code> flag to ping a specific number of times. But if it doesn't work, then what?<br />
<br />
Start by checking your networking configuration.<br />
<br />
<pre><br />
/etc/network/interfaces<br />
</pre><br />
<br />
do it<br />
<br />
<pre><br />
# vim /etc/network/interfaces<br />
</pre><br />
<br />
==network device configuration==<br />
<br />
networking device configurations, if they exist, are located in<br />
<br />
<code>/etc/network/interfaces</code><br />
<br />
the file is not required for network hardware to work - it is optional. if nothing is set in the above file, network is probably being managed by network manager. system level daemon that makes things "just work".<br />
<br />
desktops/laptops usually want network manager, servers/embedded computers/etc want stuff configured in <code>/etc/network/interfaces</code><br />
<br />
barebones interfaces file:<br />
<br />
<pre><br />
$ cat /etc/network/interfaces<br />
<br />
# The loopback network interface<br />
auto lo<br />
iface lo inet loopback<br />
</pre><br />
<br />
check for network manager<br />
<br />
<pre><br />
$ ps ax | grep NetworkManager<br />
</pre><br />
<br />
==option 1: no network manager==<br />
<br />
kill it! kill it!!!<br />
<br />
<pre><br />
446 ? Ssl 0:00 /usr/sbin/NetworkManager --no-daemon<br />
</pre><br />
<br />
die die die - ok back to what we were doing.<br />
<br />
===automatic dhcp===<br />
<br />
if you want to add your ethernet hardware, and let it automatically request and receive an IP address from a DHCP server (this expects/requires the device to be plugged in to something running a DHCP server, like a router)<br />
<br />
<pre><br />
# The loopback network interface<br />
auto lo<br />
iface lo inet loopback<br />
<br />
# Wired connection eth0<br />
auto eth0<br />
iface eth0 inet dhcp<br />
</pre><br />
<br />
===manual static===<br />
<br />
<pre><br />
# The loopback network interface<br />
auto lo<br />
iface lo inet loopback<br />
<br />
# Wired connection eth0<br />
auto eth0<br />
iface eth0 inet static<br />
address 10.10.10.12<br />
netmask 255.255.248.0<br />
network 10.10.10.0<br />
broadcast 10.10.10.255<br />
gateway 10.10.10.1<br />
</pre><br />
<br />
the following line changed:<br />
<br />
<pre><br />
iface eth0 inet static<br />
</pre><br />
<br />
static, not dhcp<br />
<br />
if you declare dhcp, all other configuration details ignored<br />
<br />
next declare ip address, 10.10.10.12<br />
<br />
declare subnet mask to 255.255.248.0<br />
<br />
declare the network we're joining to 10.10.10.0<br />
<br />
declare the broadcast ID as 10.10.10.255<br />
<br />
decalre the gateway as 10.10.10.1<br />
<br />
now restart networking service<br />
<br />
<pre><br />
$ systemctl restart networking.service<br />
</pre><br />
<br />
figure out what networking interfaces are available <br />
<br />
<pre><br />
$ ifconfig <br />
<br />
or <br />
<br />
$ ip addr show<br />
</pre><br />
<br />
==option 2: with network manager==<br />
<br />
can check if network manager is running:<br />
<br />
<pre><br />
$ ps aux | grep Network<br />
</pre><br />
<br />
to configure network manager in a gui-like terminal environment:<br />
<br />
<pre><br />
$ nmtui<br />
</pre><br />
<br />
This allows you to connect to a wireless network and enter information into corresponding fields, or to set the details of a static IP address for your network for a particular device. When editing an ethernet connection (like the eth0 device) you will see an IPv4 configuration option. If you pick "Show," you can enter an IP address, a gateway, a DNS server, etc.</div>
Admin