nmap command

掃同網段有那些
IP nmap -sP 192.168.0.0/24

或
nmap -sP 192.168.0.1-254

掃 OS
 nmap -O 192.168.0.1

掃 Port
 nmap -p 21 192.168.0.1

 全面掃描
 nmap -A -T4 192.168.0.1

只列出網段清單
 nmap -sL 192.168.0/24

用 TCP SYN 掃
 nmap -sS 192.168.0.1

用 TCP connect 掃
 nmap -sT 192.168.0.1

掃 UDP
 nmap -sU 192.168.0.1

一個簡單產生 CSR 與 PKCS12 的 Script

#!/bin/sh

if [ $# -lt 2 ] ; then

echo "Usage:$0 {create|pkcs12|check} {domain}"

exit 0

fi

DN=$2 

case "$1" in

create)

openssl genrsa -out $2.key 2048

keycontent(){

cat << EOF

Country Name (2 letter code) []:TW

State or Province Name (full name) []:Taiwan

Locality Name (eg, city) []:Taipei

Organization Name (eg, company) []:Company

Organizational Unit Name (eg, section) []:Digital IT

Common Name (eg, fully qualified host name) []: $DN.company.com.tw

Email Address []:null

A challenge password []:null

EOF

}

keycontent

openssl req -new -sha256 -key $2.key -out $2.csr

;;

pkcs12)

openssl pkcs12 -export -in $2.crt -inkey $2.key -out $2.pfx -certfile ca.crt -password pass:1234567890

#openssl pkcs12 -export -in $2.crt -inkey $2.key -out $2.pfx -password pass:1234567890

echo "done."

echo "Password is 1234567890"

read -p "do you wang to check PKC12 file ? " answer

if [ $answer = "y" ] ; then

     openssl pkcs12 -info -in $2.pfx

fi

;;

check)

openssl req -in $2.csr -pubkey -noout -outform pem | shasum

openssl pkey -in $2.key -pubout -outform pem | shasum

openssl x509 -in $2.crt -pubkey -noout -outform pem | shasum

;;

*)

echo "Usage:$0 {create|pkcs12|check} {domain}"

exit 1

;;

esac