Configure the DNS client on the ESR to allow the names of the IPS/IDS rule update sources:
esr(config)# domain lookup enable
esr(config)# domain name-server 8.8.8.8
Create IPS/IDS security policy:
esr(config)# security ips policy OFFICE
esr(config-ips-policy)# description "My Policy"
esr(config-ips-policy)# protect network-group LAN
Allow IPS/IDS operation on the bridge 1 LAN interface:
esr(config)# bridge 1
esr(config-bridge)# service-ips enable
Configure IPS/IDS parameters:
esr(config)# security ips
esr(config-ips)# logging storage-patch usb://DATA
esr(config-ips)# policy OFFICE
esr(config-ips)# enable
The device will be used only as a security gateway, for this allocate the IPS/IDS service all available resources:
esr(config-ips)# perfomance max
Configure auto-update rules from EmergingThreats.net, etnetera.cz and Abuse.ch sites
esr(config-ips)# auto-upgrade
esr(config-auto-upgrade)# user-server ET-Open
esr(config-ips-upgrade-user-server)# description «emerging threats open rules»
esr(config-ips-upgrade-user-server)# url https://rules.emergingthreats.net/open/suricata-4.0/
rules/
esr(config-ips-upgrade-user-server)# exit
esr(config-auto-upgrade)# user-server Aggressive
esr(config-ips-upgrade-user-server)# description «Etnetera aggressive IP blacklist»
esr(config-ips-upgrade-user-server)# url https://security.etnetera.cz/feeds/
etn_aggressive.rules
esr(config-ips-upgrade-user-server)# upgrade interval 4
esr(config-ips-upgrade-user-server)# exit
esr(config-auto-upgrade)# user-server SSL-BlackList
esr(config-ips-upgrade-user-server)# description «Abuse.ch SSL Blacklist»
esr(config-ips-upgrade-user-server)# url https://sslbl.abuse.ch/blacklist/sslblacklist.rules
esr(config-ips-upgrade-user-server)# upgrade interval 4
esr(config-ips-upgrade-user-server)# exit
esr(config-auto-upgrade)# user-server C2-Botnet
esr(config-ips-upgrade-user-server)# description «Abuse.ch Botnet C2 IP Blacklist»
esr(config-ips-upgrade-user-server)# url https://sslbl.abuse.ch/blacklist/sslipblacklist.rules
esr(config-ips-upgrade-user-server)# upgrade interval 4
esr(config-ips-upgrade-user-server)# exit