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--- linux:general:network [2017/10/02 11:22] – lunetikk
+++ linux:general:network [2022/12/16 10:48] – lunetikk
@@ Line 8: / Line 8: @@
 |  25  |  SMTP  |
 |  80  |  HTTP  |
-|  137 + 139  |  TCP/UDP - SMB/Samba  |
+|  111 + 2049  |  TCP/UDP - NFS  |
+|  123  |  UDP - NTP  |
+|  137 + 139 + 445  |  TCP/UDP - SMB/Samba  |
 |  443  |  HTTPS  |
 |  8080  |  Proxy  |
@@ Line 68: / Line 70: @@
 http_proxy=127.0.0.1:8080
 https_proxy=127.0.0.1:8080
+http_proxy=http://username:password@proxy_host:proxy_port
+https_proxy=https://username:password@proxy_host:proxy_port
 </code>
@@ Line 76: / Line 80: @@
 </code>
-==== Change your IP ====
+==== Change your IP (Ubuntu < 16) ====
 Edit /etc/network/interfaces:
@@ Line 96: / Line 100: @@
 <code>
 /etc/init.d/networking restart
+</code>
+<code>
+ifdown eth0 && ifup eth0
 </code>
+==== Change your IP (Ubuntu > 16) ====
+Edit /etc/netplan/01-netcfg.yaml:
+<code>
+sudo vi /etc/netplan/01-netcfg.yaml
+</code>
+and add
+<code>
+network:
+  version: 2
+  renderer: networkd
+  ethernets:
+    ens3:
+      dhcp4: no
+      addresses:
+        - 10.0.0.2/8
+      gateway4: 10.0.0.1
+      nameservers:
+          addresses: [8.8.8.8, 8.8.4.4]
+</code>
+Apply the new IP config
+<code>
+sudo netplan apply
+</code>
+==== Change your IP (SLES11/12) ====
+Edit /etc/sysconfig/network/ifcfg-eth0:
+<code>
+sudo vi /etc/sysconfig/network/ifcfg-eth0
+</code>
+and add
+<code>
+DEVICE='eth0'
+BOOTPROTO='static'
+STARTMODE='auto'
+USERCONTROL='no'
+BROADCAST=''
+ETHTOOL_OPTIONS=''
+IPADDR='10.0.0.2'
+MTU=''
+NAME=''
+NETMASK='255.255.255.0'
+NETWORK=''
+REMOTE_IPADDR=''
+</code>
+Edit gateway /etc/sysconfig/network/routes:
+<code>
+sudo vi /etc/sysconfig/network/routes
+</code>
+and add
+<code>
+default 10.0.0.1 - eth0
+#default 10.0.0.1 - -
+</code>
+Restart your networkinterface
+SLES11
+<code>
+/etc/init.d/networking restart
+</code>
+SLES12
+<code>
+ifdown eth0 && ifup eth0
+</code>
 ==== Join a domain and change hostname ====
@@ Line 122: / Line 197: @@
 </code>
+==== Tools to monitor traffic ====
+[[https://askubuntu.com/questions/257263/how-to-display-network-traffic-in-the-terminal|Askubuntu - Tools to display traffic]]
+<code>
+#bmon - shows multiple interfaces at once
+apt-get install bmon
+#tcptrack - Tells how much bandwidth is being used and also what protocol (service/port) and destination the transmission is taking place to. Very helpful when you want to know exactly what is using up your bandwidth
+apt-get install tcptrack
+#nload - Separated view for down and upload
+apt-get install nload
+#iftop
+apt-get install iftop
+#ethstatus
+apt-get install ethstatus
+</code>
+bmon: {{:linux:general:pasted:20190416-135948.png?400}}
+tcptrack: {{:linux:general:pasted:20190416-141118.png?400}}
+nload: {{:linux:general:pasted:20190416-141355.png?400}}
+iftop: {{:linux:general:pasted:20190416-141728.png?400}}
+ethstatus: {{:linux:general:pasted:20190416-141835.png?400}}
 ==== Troubleshooting ====
@@ Line 127: / Line 233: @@
 <code> dpkg-reconfigure resolvconf </code>
+=== Cant do ifdown/ifup ===
+<code>
+# ifdown eth0 && ifup eth0
+/etc/resolvconf/update-libc.d/sendmail: 7: .: Can't open /usr/share/sendmail/dynamic
+run-parts: /etc/resolvconf/update-libc.d/sendmail exited with return code 2
+run-parts: /etc/resolvconf/update.d/libc exited with return code 1
+/etc/resolvconf/update-libc.d/sendmail: 7: .: Can't open /usr/share/sendmail/dynamic
+run-parts: /etc/resolvconf/update-libc.d/sendmail exited with return code 2
+run-parts: /etc/resolvconf/update.d/libc exited with return code 1
+/etc/network/if-up.d/sendmail: 44: .: Can't open /usr/share/sendmail/dynamic
+run-parts: /etc/network/if-up.d/sendmail exited with return code 2
+</code>
+This should fix it:
+<code> apt-get --purge remove sendmail sendmail-base sendmail-bin </code>
 \\
 \\
-~~DISCUSSION~~
+~~DISCUSSION:closed~~

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