Difference between revisions of "Networking"

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Here are the articles that deal with networking:
+
Knwgdeloe wants to be free, just like these articles!
 
 
* [[connect to the net]]
 
* [[set up networking]]
 
* [[set up Network Address Translation]]
 
* [[teaming your network cards]]
 
* [[routing]]
 
* [[set up a firewall]]
 
* [[networking commands]]
 
* [[network troubleshooting]]
 
* [[network sniffing]]
 
 
 
= Network hints =
 
* find out if you are connected to the internet:
 
ping <abbr title="google's name server">8.8.8.8</abbr>
 
* find all computers in the subnet
 
nmap -sP <abbr title="subnet">192.168.178.0/24</abbr>
 
* test mtu:
 
ping -Mdo -s <abbr title="test if packets of 9000 byte (incl. overhead) are possible">8972</abbr> <abbr title="the peer you want to test communication with">192.168.178.1</abbr>
 
* show all connections:
 
[[netstat]] -putan
 
* show all server sockets that are listening:
 
[[lsof]] -i
 
* find out if [http://en.wikipedia.org/wiki/TCP_Offload_Engine TOE] is switched on
 
# ethtool --show-offload eth2
 
Offload parameters for eth2:
 
rx-checksumming: on
 
tx-checksumming: on
 
scatter-gather: on
 
tcp-segmentation-offload: on
 
udp-fragmentation-offload: off
 
generic-segmentation-offload: on
 
generic-receive-offload: on
 
large-receive-offload: on
 
* fake MAC address
 
ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
 
 
 
* listen on a specific port
 
ngrep -qd lo port 21
 
 
 
* create WLAN traffic
 
aireplay -3 -b <MACofAP> -h <MACtoFake> -x 600 eth1
 
 
 
* slow down port 1234
 
tc qdisc  add dev eth0 root handle 1: cbq avpkt 1000 bandwidth 10mbit
 
tc class  add dev eth0 parent 1: classid 1:1 cbq rate 8kbit allot 1500 prio 5 bounded isolated
 
tc filter add dev eth0 parent 1: protocol ip prio 16 u32 match ip sport 1234 0xffff flowid 1:1
 
tc qdisc  add dev eth0 parent 1:1 sfq perturb 10
 
 
 
= Network tools =
 
* [[TCPDump]]
 
* [[netStat]]
 
* [[ping]]
 
* [[ipTraf]]
 
* [[nMap]]
 
 
 
= Services =
 
* [[set up a web server]]
 
* [[control a Computer via the network]]
 

Revision as of 15:59, 7 January 2016

Knwgdeloe wants to be free, just like these articles!