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Update NETWORKING.md

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@ -34,86 +34,90 @@ You can save either example in a script to activate the Wi-Fi whenever you want.
## Next ## Next
### ufw ### ufw
sudo ufw status `sudo ufw status`
sudo ufw enable `sudo ufw enable`
sudo ufw disable `sudo ufw disable`
sudo ufw default deny `sudo ufw default deny`
sudo ufw default allow `sudo ufw default allow`
sudo ufw allow PORT_NUMBER `sudo ufw allow PORT_NUMBER`
* delete a rule * delete a rule
sudo ufw delete allow PORT_NUMBER `sudo ufw delete allow PORT_NUMBER`
* allow everything for a specific address * allow everything for a specific address
sudo ufw allow from IP_ADDRESS `sudo ufw allow from IP_ADDRESS`
* allow a specific port for a specific address * allow a specific port for a specific address
sudo ufw allow from IP_ADDRESS to any port PORT_NUMBER `sudo ufw allow from IP_ADDRESS to any port PORT_NUMBER`
### tcpdump ### tcpdump
* dump all * dump all
sudo tcpdump `sudo tcpdump`
* dump 5 packets * dump 5 packets
sudo tcpdump -c 5 `sudo tcpdump -c 5`
* dump in ASCii format * dump in ASCii format
sudo tcpdump -A `sudo tcpdump -A`
* dump in hexadecimal format * dump in hexadecimal format
sudo tcpdump -xx `sudo tcpdump -xx`
* dump from an specific interface * dump from an specific interface
sudo tcpdump -i INTERFACE_NAME `sudo tcpdump -i INTERFACE_NAME`
* dump from a specific port * dump from a specific port
sudo tcpdump port PORT_NUMBER `sudo tcpdump port PORT_NUMBER`
* dump 5 packets in hexadecimal from an specific interface and a specific port * dump 5 packets in hexadecimal from an specific interface and a specific port
sudo tcpdump -c 5 -xx -i INTERFACE port PORT_NUMBER `sudo tcpdump -c 5 -xx -i INTERFACE port PORT_NUMBER`
### netstat ### netstat
* show routing table, including gateway * show routing table, including gateway
netstat -nr `netstat -nr`
* show all ports * show all ports
netstat -tulpn `netstat -tulpn`
* show network usage of devices * show network usage of devices
netstat -i `netstat -i`
* show active connections * show active connections
netstat -ta `netstat -ta`
* show active connections, but show ip addresses instead * show active connections, but show ip addresses instead
netstat -tan `netstat -tan`
### traceroute ### traceroute
* show which route your connection takes between your computer to the destination * show which route your connection takes between your computer to the destination
traceroute WEBNAME_OR_IP `traceroute WEBNAME_OR_IP`
### nmap ### nmap
* scan a specific ip address (including devices) * scan a specific ip address (including devices)
nmap IP_NUMBER `nmap IP_NUMBER`
* scan a specific website * scan a specific website
nmap WEBSITE_NAME `nmap WEBSITE_NAME`
* scan a specific ip address (including devices) with more information * scan a specific ip address (including devices) with more information
nmap -v IP_NUMBER `nmap -v IP_NUMBER`
* scan two ip address (including devices), 192.168.0.1 and 192.168.0.54 * scan two ip address (including devices), 192.168.0.1 and 192.168.0.54
nmap 192.168.0.1,54 `nmap 192.168.0.1,54`
* scan a range of ip address (including devices), from 192.168.0.1 to 192.168.0.100 * scan a range of ip address (including devices), from 192.168.0.1 to 192.168.0.100
nmap 192.168.0.1-100 `nmap 192.168.0.1-100`
* scan all ip address (including devices) from network 192.168.0.0 * scan all ip address (including devices) from network 192.168.0.0
nmap 192.168.0.* `nmap 192.168.0.*`
* scan address from a file * scan address from a file
nmap -il FILE `nmap -il <FILE>`
* scan address and identify OS and running services * scan address and identify OS and running services
nmap -A IP_NUMBER `nmap -A IP_NUMBER`
* check if target is up * check if target is up
nmap -sP IP_NUMBER `nmap -sP IP_NUMBER`
* check reason for services states * check reason for services states
nmap --reason IP_NUMBER `nmap --reason IP_NUMBER`
* show host interfaces * show host interfaces
nmap --iflist IP_NUMBER `nmap --iflist IP_NUMBER`
### SSH ### SSH
* login to remote host * login to remote host
ssh ADDRESS `ssh ADDRESS`
* login to remote host as user USER * login to remote host as user USER
ssh USER@ADDRESS `ssh USER@ADDRESS`
* set ssh server configuration in /etc/ssh/sshd_config * set ssh server configuration in /etc/ssh/sshd_config
```
Port 22 # default port Port 22 # default port
PermitRootLogin without-password # change "without-password" to "no" PermitRootLogin without-password # change "without-password" to "no"
AllowUsers USER_NAME # by allowing a specific user it restricts the others AllowUsers USER_NAME # by allowing a specific user it restricts the others
```
* restart "ssh" service to activate changes * restart "ssh" service to activate changes
## /etc/network/interfaces ## /etc/network/interfaces
* use last 8 octets for hosts ```
# use last 8 octets for hosts
255.255.255.0 255.255.255.0
```