The Network IPS appliance supports these syntax options for custom OpenSignatures rules.
Options | Syntax |
---|---|
<action> | alert |
<protocol> | tcp, udp, icmp, icmpv6, ip |
<IP and netmask> |
|
The negation operator | ! Example: alert tcp !192.168.1.0/24 This
option means that an alert prompts you when anything other than what
is indicated with the '!' is used.
|