Hello,

> On 23 Jan 2020, at 09:44, Stefan Schantl <stefan.schantl(a)ipfire.org> wrote:
> 
> Signed-off-by: Stefan Schantl <stefan.schantl(a)ipfire.org>
> ---
> config/suricata/suricata.yaml | 25 +++++++++++++++++++++----
> 1 file changed, 21 insertions(+), 4 deletions(-)
> 
> diff --git a/config/suricata/suricata.yaml b/config/suricata/suricata.yaml
> index af9cb75a9..6a1af48fa 100644
> --- a/config/suricata/suricata.yaml
> +++ b/config/suricata/suricata.yaml
> @@ -148,7 +148,9 @@ nfq:
> app-layer:
>   protocols:
>     krb5:
> -      enabled: no # Requires rust
> +      enabled: yes
> +    snmp:
> +      enabled: yes
>     ikev2:
>       enabled: yes
>     tls:
> @@ -156,6 +158,12 @@ app-layer:
>       detection-ports:
>         dp: "[443,444,465,853,993,995]"
> 
> +      # Generate JA3 fingerprint from client hello. If not specified it
> +      # will be disabled by default, but enabled if rules require it.
> +      #ja3-fingerprints: auto
> +      # Generate JA3 fingerprint from client hello
> +      ja3-fingerprints: no
> +
>       # Completely stop processing TLS/SSL session after the handshake
>       # completed. If bypass is enabled this will also trigger flow
>       # bypass. If disabled (the default), TLS/SSL session is still
> @@ -165,6 +173,8 @@ app-layer:
>       enabled: yes
>     ftp:
>       enabled: yes
> +    rdp:
> +      enabled: no

Why is RDP disabled?

This protocol is highly exploitable and I am sure that all rulesets have plenty of rules for this.

Ideally the IPS should never see any RDP traffic going out to the Internet, but lets be honest, people do this.

>     ssh:
>       enabled: yes
>     smtp:
> @@ -203,9 +213,10 @@ app-layer:
>       enabled: yes
>       detection-ports:
>         dp: 139, 445
> -    # smb2 detection is disabled internally inside the engine.
> -    #smb2:
> -    #  enabled: yes
> +    nfs:
> +      enabled: yes
> +    tftp:
> +      enabled: yes
>     dns:
>       # memcaps. Globally and per flow/state.
>       global-memcap: 32mb
> @@ -271,6 +282,12 @@ app-layer:
>            double-decode-path: no
>            double-decode-query: no
> 
> +    ntp:
> +      enabled: yes
> +    dhcp:
> +      enabled: yes
> +    sip:
> +      enabled: yes
> 
> # Limit for the maximum number of asn1 frames to decode (default 256)
> asn1-max-frames: 256
> -- 
> 2.25.0.rc0
>