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update dynamic IP in UFW ssh access
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| #!/bin/bash | |
| HOSTNAME=dynamic.domain.com | |
| LOGFILE=$HOME/ufw.log | |
| Current_IP=$(host $HOSTNAME | head -n1 | cut -f4 -d ' ') | |
| if [ ! -f $LOGFILE ]; then | |
| /usr/sbin/ufw allow from $Current_IP to any port 22 proto tcp | |
| echo $Current_IP > $LOGFILE | |
| else | |
| Old_IP=$(cat $LOGFILE) | |
| if [ "$Current_IP" = "$Old_IP" ] ; then | |
| echo IP address has not changed | |
| else | |
| /usr/sbin/ufw delete allow from $Old_IP to any port 22 proto tcp | |
| /usr/sbin/ufw allow from $Current_IP to any port 22 proto tcp | |
| echo $Current_IP > $LOGFILE | |
| echo iptables have been updated | |
| fi | |
| fi |
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