netaddr模块的一些基本用法：
In [1]: from netaddr import *
In [2]: ip = IPAddress('172.16.100.39')
In [3]: ip.
ip.bin ip.is_hostmask ip.is_netmask ip.packed
ip.bits ip.is_ipv4_compat ip.is_private ip.reverse_dns
ip.format ip.is_ipv4_mapped ip.is_reserved ip.sort_key
ip.info ip.is_link_local ip.is_unicast ip.value
ip.ipv4 ip.is_loopback ip.key ip.version
ip.ipv6 ip.is_multicast ip.netmask_bits ip.words
In [3]: ip.
ip.bin ip.is_hostmask ip.is_netmask ip.packed
ip.bits ip.is_ipv4_compat ip.is_private ip.reverse_dns
ip.format ip.is_ipv4_mapped ip.is_reserved ip.sort_key
ip.info ip.is_link_local ip.is_unicast ip.value
ip.ipv4 ip.is_loopback ip.key ip.version
ip.ipv6 ip.is_multicast ip.netmask_bits ip.words
In [3]: ip.version
Out[3]: 4
In [4]: ip.format
Out[4]:
In [5]: ip.format()
Out[5]: '172.16.100.39'
In [6]: repr(ip)
Out[6]: "IPAddress('172.16.100.39')"
In [7]: int(ip)
Out[7]: 2886755367
In [8]: ip.bits()
Out[8]: '10101100.00010000.01100100.00100111'
In [9]: ip.words
Out[9]: (172, 16, 100, 39)
In [10]: ip = IPNetwork('172.16.100.39/24')
In [11]: ip.
ip.broadcast ip.is_ipv4_compat ip.iter_hosts ip.size
ip.cidr ip.is_ipv4_mapped ip.key ip.sort_key
ip.first ip.is_link_local ip.last ip.subnet
ip.hostmask ip.is_loopback ip.netmask ip.supernet
ip.info ip.is_multicast ip.network ip.value
ip.ip ip.is_private ip.next ip.version
ip.ipv4 ip.is_reserved ip.prefixlen
ip.ipv6 ip.is_unicast ip.previous
In [11]: ip.network
Out[11]: IPAddress('172.16.100.0')
In [12]: ip.broadcast
Out[12]: IPAddress('172.16.100.255')
In [13]: ip.ip
Out[13]: IPAddress('172.16.100.39')
In [14]: ip.size
Out[14]: 256
In [15]: ip.net
ip.netmask ip.network
In [15]: ip.netmask
Out[15]: IPAddress('255.255.255.0')
In [16]: ip.hostmask
Out[16]: IPAddress('0.0.0.255')
In [17]: ip.pr
ip.prefixlen ip.previous
In [17]: ip.prefixlen
Out[17]: 24
下面是netaddr结合python-nmap实现的端口扫描程序：
[root@controller-39 ~]# yum install -y nmap # 安装nmap
[root@controller-39 ~]# pip install python-nmap # 安装python-nmap模块
[root@controller001 home]# cat nmap_test.py # 扫描同网段机器的端口
from netaddr import *
import nmap
ip = '192.168.141.2'
prefix = '24'
ipn = IPNetwork(ip+'/'+prefix)
network = str(ipn.network)
hosts = network+'/'+prefix
port= '22-443'
try:
nm = nmap.PortScanner()
except nmap.PortScannerError:
print('Nmap not found', sys.exc_info()[0])
sys.exit(0)
except:
print('Nmap not found', sys.exc_info()[0])
sys.exit(0)
nm.scan(hosts, port)
for host in nm.all_hosts():
print("---------------------------")
print("Host : %s" % (host))
print("State : %s" % nm[host].state())
for proto in nm[host].all_protocols():
print("----------------")
print("Protocol : %s" % proto)
lport = nm[host][proto].keys()
lport.sort()
for port in lport:
print('port : %s\tstate : %s' % (port, nm[host][proto][port]['state']))
[root@controller001 home]# python nmap_test.py # 执行结果
---------------------------
Host : 192.168.141.17
State : up
----------------
Protocol : tcp
port : 22 state : open
port : 80 state : open
port : 111 state : open
---------------------------
Host : 192.168.141.2
State : up
----------------
Protocol : tcp
port : 22 state : open
port : 80 state : open
---------------------------
Host : 192.168.141.26
State : up
----------------
Protocol : tcp
port : 22 state : open
port : 111 state : open
---------------------------
Host : 192.168.141.28
State : up
----------------
Protocol : tcp
port : 22 state : open
port : 53 state : open
port : 80 state : open
port : 111 state : open
---------------------------
Host : 192.168.141.30
State : up
----------------
Protocol : tcp
port : 22 state : open
port : 80 state : open
port : 111 state : open
参考链接
http://xael.org/pages/python-nmap-en.html