Shulou(Shulou.com)06/02 Report--

Ubuntu Firewall Settings

You can set it directly in the initial state.

Try not to reinstall iptables and ufw, which can easily lead to a firewall collapse and may end up having to reinstall the system.

Configuration script firewall.sh#/bin/bashufw disableecho y | ufw reset / / reset ufwufw allow from xxx.xxx.xxx.xxx / / Open all ports to this ip ufw allow from xx.xxx.xx.0/24 / / Open all ports to a certain segment of ip ufw allow from 192.168.101.0/24ufw allow from xx.xx.xx.xx to any port 161proto udp / / Open 161/udp ports to a certain ip echo y | ufw enable# WEB service allow / / A pair of public networks open a port without tcp means tcp and udp are fully open ufw allow 80/tcpufw allow 1:500/tcp / / A pair of public network batch open ports 1-50 Default Rules / / default limits all ufw default deny incoming

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