Canon imageRUNNER 1435i Manual
Preventing Unauthorized Access
3
Preventing Unauthorized Access
This.section.describes.the.security.measures.on.how.to.prevent.unauthorized.access.from.the.external.network..This.
is.a.must-read.for.all.users.and.administrators.before.using.this.machine,.other.printers,.and.multifunction.machines.
connected.to.the.network..In.recent.years,.a.printer/multifunction.machine.connected.to.the.network.can.offer.you.
a.variety.of.useful.functions,.such.as.printing.from.a.computer,.operating.from.a.computer.using.the.remote.
function,.and.sending.scanned.documents.via.the.Internet..On.the.other.hand,.it.is.essential.to.take.security.
measures.to.reduce.the.security.risk.for.information.leakage,.as.a.printer/multifunction.machine.has.become.more.
exposed.to.threats,.such.as.unauthorized.access.and.theft,.when.it.is.connected.to.the.network..This.section.
explains.necessary.settings.you.need.to.specify.to.prevent.unauthorized.access.before.using.a.printer/multifunction.
machine.connected.to.the.network.
is.a.must-read.for.all.users.and.administrators.before.using.this.machine,.other.printers,.and.multifunction.machines.
connected.to.the.network..In.recent.years,.a.printer/multifunction.machine.connected.to.the.network.can.offer.you.
a.variety.of.useful.functions,.such.as.printing.from.a.computer,.operating.from.a.computer.using.the.remote.
function,.and.sending.scanned.documents.via.the.Internet..On.the.other.hand,.it.is.essential.to.take.security.
measures.to.reduce.the.security.risk.for.information.leakage,.as.a.printer/multifunction.machine.has.become.more.
exposed.to.threats,.such.as.unauthorized.access.and.theft,.when.it.is.connected.to.the.network..This.section.
explains.necessary.settings.you.need.to.specify.to.prevent.unauthorized.access.before.using.a.printer/multifunction.
machine.connected.to.the.network.
Assigning a Private IP Address
An.IP.address.is.a.numerical.label.assigned.to.each.device.participating.in.a.computer.network..A.“global.IP.address”.
is.used.for.the.communication.connecting.to.the.Internet,.and.a.“private.IP.address”.is.used.for.the.communication.
within.a.local.area.network,.such.as.a.LAN.in.the.company..If.a.global.IP.address.is.assigned,.your.printer/
multifunction.machine.is.open.to.the.public.and.can.be.accessed.via.the.Internet..Thus,.the.risk.of.information.
leakage.due.to.unauthorized.access.from.external.network.increases..On.the.other.hand,.if.a.private.IP.address.is.
assigned,.your.printer/multifunction.machine.is.closed.to.a.local.area.network.and.can.be.accessed.by.only.users.on.
your.local.area.network,.such.as.a.LAN.in.the.company.
is.used.for.the.communication.connecting.to.the.Internet,.and.a.“private.IP.address”.is.used.for.the.communication.
within.a.local.area.network,.such.as.a.LAN.in.the.company..If.a.global.IP.address.is.assigned,.your.printer/
multifunction.machine.is.open.to.the.public.and.can.be.accessed.via.the.Internet..Thus,.the.risk.of.information.
leakage.due.to.unauthorized.access.from.external.network.increases..On.the.other.hand,.if.a.private.IP.address.is.
assigned,.your.printer/multifunction.machine.is.closed.to.a.local.area.network.and.can.be.accessed.by.only.users.on.
your.local.area.network,.such.as.a.LAN.in.the.company.
Router
Global IP Address
Private IP Address
Can.be.accessed.from.the.users.within.a.local.area.
network
network
Can.be.accessed.from.the.users.within.a.local.area.network
Basically,.assign.a.private.IP.address.to.your.printer/multifunction.machine..Make.sure.to.confirm.the.IP.address,.
assigned.to.the.printer/multifunction.machine.you.are.using,.is.a.private.IP.address.or.not..A.private.IP.address.is.
found.in.one.of.the.following.ranges.
assigned.to.the.printer/multifunction.machine.you.are.using,.is.a.private.IP.address.or.not..A.private.IP.address.is.
found.in.one.of.the.following.ranges.