aiden
/
suricata
mirror of https://github.com/OISF/suricata
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
4,508 Commits
8 Branches
165 Tags
231 MiB
main
main-7.0.x
main-8.0.x
master-6.0.x
master-5.0.x
master-4.1.x
master-4.0.x
master-3.2.x
suricata-8.0.2
suricata-7.0.13
suricata-8.0.1
suricata-7.0.12
suricata-8.0.0
suricata-7.0.11
suricata-8.0.0-rc1
suricata-8.0.0-beta1
suricata-7.0.10
suricata-7.0.9
suricata-7.0.8
suricata-7.0.7
suricata-7.0.6
suricata-6.0.20
suricata-7.0.5
suricata-6.0.19
suricata-6.0.18
suricata-7.0.4
suricata-6.0.17
suricata-7.0.3
suricata-6.0.16
suricata-7.0.2
suricata-6.0.15
suricata-7.0.1
suricata-6.0.14
suricata-7.0.0
suricata-7.0.0-rc2
suricata-6.0.13
suricata-6.0.12
suricata-6.0.11
suricata-7.0.0-rc1
suricata-6.0.10
suricata-6.0.9
suricata-7.0.0-beta1
suricata-6.0.8
suricata-6.0.7
suricata-6.0.6
suricata-5.0.10
suricata-6.0.5
suricata-5.0.9
suricata-6.0.4
suricata-5.0.8
suricata-6.0.3
suricata-5.0.7
suricata-6.0.2
suricata-5.0.6
suricata-6.0.1
suricata-5.0.5
suricata-4.1.10
suricata-4.1.9
suricata-5.0.4
suricata-6.0.0
suricata-6.0.0-rc1
suricata-6.0.0-beta1
suricata-5.0.3
suricata-4.1.8
suricata-4.1.7
suricata-5.0.2
suricata-4.1.6
suricata-5.0.1
suricata-5.0.0
suricata-5.0.0-rc1
suricata-4.1.5
suricata-5.0.0-beta1
suricata-4.1.4
suricata-4.1.3
suricata-4.0.7
suricata-4.1.2
suricata-4.1.1
suricata-4.1.0
suricata-4.0.6
suricata-4.1.0-rc2
suricata-4.1.0-rc1
suricata-4.0.5
suricata-4.1.0-beta1
suricata-4.0.4
suricata-4.0.3
suricata-4.0.2
suricata-3.2.5
suricata-4.0.1
suricata-3.2.4
suricata-4.0.0
suricata-4.0.0-rc2
suricata-3.2.3
suricata-4.0.0-rc1
suricata-4.0.0-beta1
suricata-3.2.2
suricata-3.1.4
suricata-3.2.1
suricata-3.2
suricata-3.2RC1
suricata-3.1.3
suricata-3.2beta1
suricata-3.1.2
suricata-3.1.1
suricata-3.1
suricata-3.0.2
suricata-3.1RC1
suricata-3.0.1
suricata-3.0.1RC1
suricata-3.0
suricata-2.0.11
suricata-3.0RC3
suricata-3.0RC2
suricata-3.0RC1
suricata-2.0.10
suricata-2.0.9
suricata-2.1beta4
suricata-2.0.8
suricata-2.0.7
suricata-2.1beta3
suricata-2.0.6
suricata-2.0.5
suricata-2.1beta2
suricata-2.0.4
suricata-2.1beta1
suricata-2.0.3
suricata-2.0.2
suricata-2.0.1
suricata-2.0.1rc1
suricata-2.0
suricata-2.0rc3
suricata-2.0rc2
suricata-2.0rc1
suricata-2.0beta2
suricata-1.4.7
suricata-1.4.6
suricata-1.4.5
suricata-2.0beta1
suricata-1.4.4
suricata-1.4.3
suricata-1.4.2
suricata-1.4.1
suricata-1.3.6
suricata-1.4
suricata-1.3.5
suricata-1.4rc1
suricata-1.3.4
suricata-1.4beta3
suricata-1.3.3
suricata-1.4beta2
suricata-1.3.2
suricata-1.4beta1
suricata-1.3.1
suricata-1.3
suricata-1.3rc1
suricata-1.3beta2
suricata-1.3beta1
suricata-1.2.1
suricata-1.2
suricata-1.2rc1
suricata-1.2beta1
suricata-1.1.1
suricata-0.8.2
suricata-1.0.0
suricata-1.0.1
suricata-1.0.2
suricata-1.0.3
suricata-1.0.4
suricata-1.0.5
suricata-1.1
suricata-1.1beta1
suricata-1.1beta2
suricata-1.1beta3
suricata-1.1rc1
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '85b1a8ff26'
${ noResults }
Commit Graph

9 Commits (85b1a8ff26a0a8ba1e3f0a0c9e92f6fb08c2733d)

Author SHA1 Message Date
Victor Julien 61cdd9be6b dns: detect case of request flooding 
In the case where DNS requests are sent over the same flow w/o a
reply being received, we now set an event in the flow and refuse
to add more transactions to the state. This protects the DNS
handling from getting overloaded slowing down everything.

A new option to configure this behaviour was added:

app-layer:
  protocols:
    dnsudp:
       enabled: yes
       detection-ports:
         udp:
           toserver: 53
       request-flood: 750

The request-flood parameter can be 0 (disabling this feature) or a
positive integer. It defaults to 500.

This means that if 500 unreplied requests are seen in a row an event
is set. Rule 2240007 was added to dns-events.rules to match on this.
 12 years ago
Anoop Saldanha 5e2d9dbdc3 Add and use EventGetInfo for getting info on an event. 
Also update existing parsers and app-layer-event Setup to use this.
 12 years ago
Victor Julien 1c371da46d DNS: better handle TX' with lost replies 13 years ago
Victor Julien 1367074c75 App layer: clean up TX before lowest active one 
Update DNS to handle cleaning up this way.
 13 years ago
Victor Julien ebab9aee83 DNS: move internal tx id tracking to u64 13 years ago
Victor Julien e8ad876b48 App layer: add 'StateHasEvents' API call 
Per TX decoder events resulted in significant overhead to the
detection engine, as it walked all TX' all the time to check
if decoder events were available.

This commit introduces a new API call StateHasEvents, which speeds
up this process, at the expense of keeping a counter in the state.

Implement this for DNS as well.
 13 years ago
Victor Julien 571b8ac186 DNS: add support for per TX decoder events. 13 years ago
Victor Julien 6674f4892c DNS: add per tx internal id 
Add per TX id. Rename transaction_cnt to transaction_max (id) and increment it on tx creation.
 13 years ago
Victor Julien 8e01cba85d DNS TCP and UDP parser and DNS response logger 13 years ago