reference
Reconnaissance - SH
When you have a ip you can make many things to understand what is standing behind
Ping
Always start with a ping, to know is the host is reachable or not.
// shell
#ping -c 3 10.129.43.3
PING 10.129.43.3 (10.129.43.3) 56(84) bytes of data.
64 bytes from 10.129.43.3: icmp_seq=1 ttl=62 time=23.7 ms
64 bytes from 10.129.43.3: icmp_seq=2 ttl=62 time=27.8 ms
64 bytes from 10.129.43.3: icmp_seq=3 ttl=62 time=24.4 ms
--- 10.129.43.3 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2014ms
rtt min/avg/max/mdev = 23.721/25.331/27.833/1.792 ms
// breakdown
-c 3- stop sending ICMP packet after 3 repliesIf the host is unreachble.
// shell
#ping -c 3 10.129.43.3
PING 10.129.43.3 (10.129.43.3) 56(84) bytes of data.
From 192.168.0.254 icmp_seq=1 Destination Host Unreachable
From 192.168.0.254 icmp_seq=2 Destination Host Unreachable
From 192.168.0.254 icmp_seq=3 Destination Host Unreachable
--- 10.129.43.3 ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2010ms
Check if the vpn is up or check if not many instance of vpn is up.
// shell
#sudo killall openvpn
Nmap scan
Quick scan
// shell
#nmap -
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