Commands tagged ip address (118)
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display IP's that unsuccessfully attempted to login 5 or more times today may want to filter any trusted IP's and the localhost useful for obtaining a list IP addresses to block on the firewall Show Sample Output
-1lastb -i | grep "$(date '+%a %b %d')" | awk '{ print $3 }' | sort | uniq -c | awk '{ if ($1 >= 5) print $2; }' -
regex to match an ip Show Sample Output
-2echo "123.32.12.134" | grep -P '([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])' -
-2ifconfig eth0 | grep "inet:" | cut -d ":" -f2 | cut -d " " -f1
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-2for i in 192.168.1.{1..254} ; do if ping -c1 -w1 $i &>/dev/null; then echo $i alive; fi; done
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With a lolcat favicon if you access it from your browser Show Sample Output
-2curl icanhazip.com -
Here's a version that uses netcat (although I'd much rather use curl!).
-2echo -e "GET /ip HTTP/1.0\nUser-Agent: netcat\nHOST: ifconfig.me\n\n" | nc ifconfig.me 80 | sed -n '/^[0-9]/p' -
This is just a "cut" addicted variant of the previous unixmonkey24730 command...
-2wget -O - -q http://checkip.dyndns.org/ | cut -d':' -f2 | cut -d'<' -f1| cut -c2- -
-2curl icanhazip.com
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ip.telize.com (Listen on both IPv4 and IPv6) ip4.telize.com (Listen on IPv4 only) ip6.telize.com (Listen on IPv6 only) More information on : http://www.telize.com
-2curl ip.telize.com -
Gets the internal and external IP addresses of all your interfaces, or the ones given as arguments Show Sample Output
-3ips(){ for if in ${1:-$(ip link list|grep '^.: '|cut -d\ -f2|cut -d: -f1)};do cur=$(ifconfig $if|grep "inet addr"|sed 's/.*inet addr:\([0-9\.]*\).*/\1/g');printf '%-5s%-15s%-15s\n' $if $cur $(nc -s $cur sine.cluenet.org 128 2>/dev/null||echo $cur);done;} -
grabs your local IP Address. Show Sample Output
-3ifconfig -a|grep Bcast:|cut -d\: -f2|awk '{print $1}' -
If curl isn't available, use lynx.
-3lynx --dump icanhazip.com -
-3wget http://checkip.dyndns.org/ -q -O - | grep -Eo '\<[[:digit:]]{1,3}(\.[[:digit:]]{1,3}){3}\>'
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Another simple way to get external IP or use: wget -qO- http://ipecho.net/plain
-3curl http://ipecho.net/plain -
This is useful when you got a reserved IP address like 192.168.0.100 and want to find out what IP address is used to access the Internet. You have to know a server with 'efingerd -n' configured, like www.linuxbanks.cn as above. Other method to find out this information are for example access www.tell-my-ip.com and grep the output. The finger method have the advantage that it is easy to deploy a service like www.tell-my-ip.com, as you only need to get efingerd installed.
-4finger @www.linuxbanks.cn | grep -oE '([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}' | head -n1 -
-6wget -qO- whatismyip.org
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documents all active ips on a subnet and saves to txt file. Show Sample Output
-9FOR /L %i IN (1,1,254) DO ping -n 1 10.254.254.%i | FIND /i "Reply">> c:\ipaddresses.txt -
Requires Python; doesn't require a specific server to return your IP.
-11python -c "import socket; s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM); s.connect(('google.com', 80)); print s.getsockname()[0]" - ‹ First < 3 4 5
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