IPsec in 4 minutes Exchange authentication keys Copy /etc/isakmpd/private/local.pub from Firewall B into /etc/isakmpd/pubkeys/ipv4/ip.of.fw.B on Firewall A Copy /etc/isakmpd/private/local.pub from Firewall A into /etc/isakmpd/pubkeys/ipv4/ip.of.fw.A on Firewall B