ZyXEL Communications ZyWALL 1050 Release Note page 131

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Note
1. To provide backward compatibility, all obsolete CLI commands are allowed but
ZyWALL 1050 would give warnings and try to convert it to new category.
2. For those who use older firmware, they may experience incorrect website classification
which leads to fail to block/forward certain websites. It is strongly recommended that
use firmware newer than 1.01(XL.0).
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