Canon MP560 补充手册

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页码 16
Is the access point operating in IEEE802.11b or IEEE802.11g (2.4 GHz)?
For details on how to check the operating mode of the access point, refer to the manual supplied with the access point or contact its manufacturer.
Check 6
Set the access point to operate in IEEE802.11b or IEEE802.11g (2.4 GHz).
For details on how to change the operating mode of the access point, refer to the manual supplied with the access point or contact its manufacturer.
Firewall
A security measure to protect computers connected to the Internet and corporate networks against unauthorized external access.
Glossary