这取决于你创建的规则是否是通用的,比如
ufw allow 22/tcp
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或特定于一个地址族,例如
sudo ufw allow from 192.168.1.0/24 to any port 22 proto tcp
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前任。:
$ sudo ufw allow from 192.168.1.0/24 to any port 22 proto tcp
Rule added
$ sudo ufw status numbered
Status: active
To Action From
-- ------ ----
[ 1] 22/tcp ALLOW IN 192.168.1.0/24
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但
$ sudo ufw allow 22/tcp
Rule added
Rule added (v6)
$ sudo ufw status numbered
Status: active
To Action From
-- ------ ----
[ 1] 22/tcp ALLOW IN Anywhere
[ 2] 22/tcp (v6) ALLOW IN Anywhere (v6)
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