I have managed to send a longer string as a TCP packet with nping. 0000 d0 50 99 0d ab 0f 00 0c 29 6f 3b 80 08 00 45 00 ÐP..«…)o;…E. 0010 00 e3 07 90 00 00 40 06 ef 2b c0 a8 01 04 c0 a8 .ã….@.ï+À¨..À¨…
Read MoreThe IP address you supply the ping command with can have a leading zero or multiple leading zeros and they will be ignored by the ping command. This is an example. jason@jason-desktop:~$ ping 192.168.00001.00002 PING 192.168.00001.00002 (192.168.1.2) 56(84) bytes of data. 64 bytes from 192.168.1.2: icmp_seq=1 ttl=64 time=0.012 ms 64…
Read MoreThis command will get the IP address from the interface supplied and then ping it. ping $(ifconfig enp6s1 | awk ‘/inet / { print $2 } ‘ | sed -e s/addr://)ping $(ifconfig enp6s1 | awk ‘/inet / { print $2 } ‘ | sed -e s/addr://) Here is an example….
Read MoreSecuring your Linux computer with iptables is a great way to make sure that you are safer from Internet attacks. The iptables(8) system is the built in firewall for a Linux system. This makes it very easy to secure your computer. Before you change any settings, backup your iptables configuration….
Read MoreAlternatives to the ping and traceroute commands on a Linux system There are many alternatives to the ping and traceroute commands on a Linux system. The mtr command is one of them. This command will trace the route the network packets are taking to the target IP address. bash 06:42:02…
Read MoreA nice script that will check if a host is up or not. #!/usr/bin/perl use warnings; use strict; use Net::Ping; # code source: http://www.perlmonks.org/?node_id=943892 # More: http://stackoverflow.com/questions/3960595/how-can-i-ping-a-host-with-a-perl-one-liner-with-netping #$| = 1; print "Please type a host to check: -:\n"; my $host = <>; #Reading input from STDIN….
Read MoreThe new Ubuntu phone Linux distribution will come with a terminal application. This means that users of a mobile device will be able to use the bash shell on their mobile device to use various networking commands on the phone as well as other useful Linux commands that make the…
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