Linux 操作基础
临时配置IP地址
dhclient eth0 # 临时自动获得IP地址
ifconfig eth0 192.168.1.11/24 # 临时手动指定IP地址
route add default gw 192.168.1.1 # 添加默认路由
route add -net 172.16.0.0/24 gw 192.168.1.100 eth0 # 添加静态路由
echo nameserver 192.168.1.1 > /etc/resolv.conf # 添加DNS
固定IP地址
cat /etc/network/interface
auto eth0
iface eth0 inet static
address 192.168.20.1
netmask 255.255.255.0
network 192.168.20.0
broadcast 192.168.20.255
gateway 192.168.20.2
dns-nameservers 192.168.1.1 192.168.1.2
up route add -net 172.16.5.0/24 gw 192.168.10.100 eth1
down route del -net 172.24.0.0/24
查看内核版本
uname -r
nc 传输文件
B -> A:
A:nc -lp 1234 > flag.txt
B:nc -nv ***.***.***.*** 1234 < ***
A -> B:
A:nc -q 1 -lp 1234 < flag.txt
B:nc -nv ******** 1234 > flag.txt
如果需要加密传输,那么就必须添加参数 mcrypt 等
nc 端口扫描
nc -nvz **** 1-65535
nc -nvz *** 1-1000
tcpdump 抓包
tcpdump -i eth0 -s 0 -w filename.pcap
tcpdump -i eth0 tcp port 22
tcpdump -i eth0 src host hostname
tcp 读取流量包
tcpdump -r file.pcap
tcpdump -A -r file.pcap
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