checkedsafe.com

Check for possible rootkits and viruses.

You must have chkrootkit installed.

Red Hat Enterprise Linux and rebuilds: yum install chkrootkit
Ubuntu and Debian: apt-get install chkrootkit

Get SMART information for your IDE/ATA hard drives. Use "/dev/hda[b-t]" for any additional IDE/ATA devices. Notable "Attributes" to keep an eye on are Scan errors, Reallocation counts, Offline reallocation counts and Probational counts.

Requires smartmontools be installed:
Red Hat Enterprise Linux and rebuilds: yum install smartmontools
Ubuntu and Debian: apt-get smartmontools

Synchronize files from your user home folder to a remote server using ssh for encryption. Replace username with your own user account and servername with the IP or domain of the remote server.

For convenience, add this command to your crontab (assuming you have passwordless ssh setup).

Requires rsync be installed:
Red Hat Enterprise Linux and rebuilds: yum install rsync
Ubuntu and Debian: apt-get rsync

Get SMART information for your SATA hard drives (SATA devices using libata). Use "/dev/sda[b-t]" for any additional SATA hard drives (SATA devices using libata). Notable "Attributes" to keep an eye on are Scan errors, Reallocation counts, Offline reallocation counts and Probational counts.

Requires smartmontools be installed:
Red Hat Enterprise Linux and rebuilds: yum install smartmontools
Ubuntu and Debian: apt-get smartmontools

Check your Windows routing table for issues.

Review your Linux /etc/hosts file for suspicious IP mappings.