SpareSimian
SpareSimian
/ mimedefang-filter-discard-backup.pl
Created
December 17, 2024 18:51
MIMEDefang milter extract: Discard spam from backup MX
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| use Net::DNS; | |
| # GetHostAddresses(resolver,hostname) | |
| # returns list of IP addresses for hostname | |
| sub GetHostAddresses ($$) { | |
| my ($resolver,$hostname) = @_; | |
| my @addresses; | |
| my $received = $resolver->search($hostname); | |
| if ($received) { |
SpareSimian
/ tar-compress-encrypt-verify.sh
Created
January 10, 2025 23:14
Tar, compress, and encrypt a directory hierarchy
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| # commands used to encrypt a filesystem image | |
| # create the encryption key (256 bits in hex) | |
| openssl rand -hex 32 > /root/aes_key.txt | |
| # move to top of desired filesystem to backup and encrypt | |
| cd /mnt/root-to-back-up | |
| # Tar using xz compression and pipe to AES256 encryption | |
| tar cvfJ - . | openssl enc -aes-256-cbc -e -pass file:/root/aes_key.txt -out /mnt/USB-thumb-drive/encrypted-backup.tar.xz |
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