How to Protect your MikroTik RouterOS™?

DescriptionTo protect your MikroTik RouterOS™, you should not only change admin's password but also set up packet filtering. All packets with destination to the router are processed against the ip firewall input chain. Note, that the input chain does not affect packets which are being transferred through the router.You can add following rules under /ip firewall rule input (just 'copy and paste' to the router using Terminal Console or configure the relevant arguments in WinBox):/ip firewall rule input add connection-state=invalid action=drop \comment="Drop invalid connections"/ip firewall rule input add connection-state=established \comment="Allow established connections"/ip firewall rule input add connection-state=related \comment="Allow related connections"/ip firewall rule input add protocol=udp...

Read More

Fix Bad Sectors on a Hard Disk

Step 1:First, recognize the common causes of bad sectors. Sometimes, a sector just goes physically bad. This means it just won't work anymore, and there is no way to repair it. It's common, and expected, but if you get enough the drive will become unusable and you'll need to replace it. Two other causes are simple drive instability or incorrect mapping; formating usually solves both of these (though not always).Step 2:The first step is to run the CheckDisk utility (chkdsk from your command prompt). This will locate the bad sectors, and mark them as such. It will, if possible, move the data from the bad sectors to good ones. Then, in the future, your system just won't use the bad sectors. If the utility tells you that there were several thousand bad sectors, your hard drive should be backed...

Read More