Linux cmd
change ip
/etc/network/interfaces sudo /etc/init.d/network-manager restart service network-manager restart
route add default gw 10.124.8.1
netstat -rn 看下路由
route del default gw
route add -net 192.168.0.0/24 gw 192.168.0.1
vnc can not copy 1.vncconfig ---real vnc 2.autocutsel -s PRIMARY -fork ----- tite vnc
vncserver config https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-remote-access-for-the-gnome-desktop-on-centos-7 sudo systemctl restart vncserver@:5.service
FGREP
fgrep -R "RPD RPD" *
SED
sed -i 's/60.10.13.61/60.10.13.66/g' /etc/dhcp/dhcpd.conf
awk
sudo virsh list | grep running | grep -v grep | awk '{print $2}' ---- awk 将第二列输出
awk '{print $2}' | sudo xargs kill -9 ----- xargs 将管道输出作为参数传入
netstat
netstat -tulpn
iptables
iptables -L -n -t nat
./iptables.sh 172.25.13.51 192.168.125.195 sudo iptables -t nat -I PREROUTING -p tcp -d 10.74.54.210 --dport 8190 -j DNAT --to-destination 60.10.13.215:8190 delete ip table all sudo iptables -F -t nat
[root@smartphy-deployment install]# iptables -P INPUT ACCEPT [root@smartphy-deployment install]# iptables -P FORWARD ACCEPT [root@smartphy-deployment install]# iptables -t nat -A POSTROUTING -s 192.168.125.0/24 -o ens192 -j MASQUERADE -------------源地址转换
sudo iptables -I FORWARD -m state -d 192.168.125.0/24 --state NEW,RELATED,ESTABLISHED -j ACCEPT 转发包 sudo iptables -t nat -I PREROUTING -p tcp -d $1 --dport 8190 -j DNAT --to-destination $2:8190--------目的地址转换 删除nat某一条 sudo iptables -t nat -D PREROUTING 6
sudo iptables -t nat -L --line-number -n | more
debug 8190 port
nc -s 60.10.13.43 -v 100.1.1.1 8190 ----------向100.1.1.1 8190 模拟发包 sudo tcpdump -i enp4s0f1.608 -n port 8190
no ip route 60.10.13.60 255.255.255.255
Fireware
telnet 10.74.54.208 37 |hexdump 0000000 7254 6979 676e 3120 2e30 3437 352e 2e34 0000010 3032 2e38 2e2e 0a0d 6f43 6e6e 6365 6574 0000020 2064 6f74 3120 2e30 3437 352e 2e34 3032 0000030 2e38 0a0d 7345 6163 6570 6320 6168 6172 0000040 7463 7265 6920 2073 5e27 275d 0d2e dd0a Connection closed by foreign host. 0000050 1f22 003a 0000053
sudo firewall-cmd --permanent --add-port=37/tcp sudo firewall-cmd --permanent --add-port=37/udp sudo firewall-cmd --reload
