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Only use iptable to block xml.cisco.com on Ubuntu Focal.

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grossmj 2024-04-20 15:45:28 +07:00
parent 4959a51ce7
commit faf7e09ebb
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1 changed files with 11 additions and 4 deletions
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15
scripts/remote-install.sh
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@ -198,10 +198,17 @@ then
dd if=/dev/zero bs=4 count=1 of=/etc/hostid
# Block potential IOU phone home call (xml.cisco.com is not in use at this time)
iptables -I OUTPUT -p udp --dport 53 -m string --hex-string "|03|xml|05|cisco|03|com" --algo bm -j DROP
echo iptables-persistent iptables-persistent/autosave_v4 boolean true | debconf-set-selections
echo iptables-persistent iptables-persistent/autosave_v6 boolean true | debconf-set-selections
apt-get install -y iptables-persistent
log "Block IOU phone home call"
if [ "$UBUNTU_CODENAME" == "focal" ]
then
iptables -I OUTPUT -p udp --dport 53 -m string --hex-string "|03|xml|05|cisco|03|com" --algo bm -j DROP
echo iptables-persistent iptables-persistent/autosave_v4 boolean true | debconf-set-selections
echo iptables-persistent iptables-persistent/autosave_v6 boolean true | debconf-set-selections
apt-get install -y iptables-persistent
else
echo "127.0.0.254 xml.cisco.com" | tee --append /etc/hosts
fi
fi
log "Add gns3 to the kvm group"