git
28 lines
704 B
Bash
Executable File
28 lines
704 B
Bash
Executable File
#!/bin/bash
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BASE_DIR="/mnt/docker-persistent-data/docker"
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INI_FILE=$BASE_DIR"/last-ip.ini"
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LOG_FILE=$BASE_DIR"/update-firewall.log"
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CURRENT_IP=$(dig +short lan.ddnsgeek.com)
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LAST_IP=`cat $INI_FILE`
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CMD_PART_1='allow proto tcp from'
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CMD_PART_2='to any port 22'
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echo $(date -d "+10 hours" "+%a %b %d %T") > $LOG_FILE
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echo "Last IP address: "$LAST_IP >> $LOG_FILE
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echo "Current IP address: "$CURRENT_IP >> $LOG_FILE
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if ! [ $CURRENT_IP == $LAST_IP ];
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then
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echo "Updating Firewall Rules" >> $LOG_FILE
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sudo ufw delete $CMD_PART_1 $LAST_IP $CMD_PART_2
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sudo ufw $CMD_PART_1 $CURRENT_IP $CMD_PART_2
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echo $CURRENT_IP > $INI_FILE
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else
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echo "IP address is correct. No firewall changes needed" >> $LOG_FILE
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fi
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