Hello @Andreas_Herz , thank you very much for your response.
How can I check the lb.bpf file? I have bpftool working but it is new to me and can’t find how to check the lb.bpf program with it.
-rw-r--r-- 1 root root 1.9K Mar 26 10:35 /usr/libexec/suricata/ebpf/lb.bpf
We start suricata with suricata --af-packet -vvv
The af-packet config is as follows:
af-packet:
- interface: ens192
threads: 8
defrag: no
cluster-type: cluster_ebpf
ebpf-lb-file: /usr/libexec/suricata/ebpf/lb.bpf
cluster-id: 98
copy-mode: tap
tpacket-v3: no
copy-iface: ens224
buffer-size: 131072
use-mmap: yes
mmap-locked: yes
- interface: ens224
threads: 8
cluster-id: 97
defrag: no
cluster-type: cluster_ebpf
ebpf-lb-file: /usr/libexec/suricata/ebpf/lb.bpf
copy-mode: tap
tpacket-v3: no
copy-iface: ens192
buffer-size: 131072
use-mmap: yes
mmap-locked: yes
The full suricata.yaml:
%YAML 1.1
---
vars:
address-groups:
HOME_NET: "[172.16.9.0/24]"
EXTERNAL_NET: "!$HOME_NET"
HTTP_SERVERS: "$HOME_NET"
SMTP_SERVERS: "$HOME_NET"
SQL_SERVERS: "$HOME_NET"
DNS_SERVERS: "$HOME_NET"
TELNET_SERVERS: "$HOME_NET"
AIM_SERVERS: "$EXTERNAL_NET"
DC_SERVERS: "$HOME_NET"
DNP3_SERVER: "$HOME_NET"
DNP3_CLIENT: "$HOME_NET"
MODBUS_CLIENT: "$HOME_NET"
MODBUS_SERVER: "$HOME_NET"
ENIP_CLIENT: "$HOME_NET"
ENIP_SERVER: "$HOME_NET"
port-groups:
HTTP_PORTS: "80"
SHELLCODE_PORTS: "!80"
ORACLE_PORTS: 1521
SSH_PORTS: 22
DNP3_PORTS: 20000
MODBUS_PORTS: 502
FILE_DATA_PORTS: "[$HTTP_PORTS,110,143]"
FTP_PORTS: 21
VXLAN_PORTS: 4789
TEREDO_PORTS: 3544
default-log-dir: /var/log/suricata/
stats:
enabled: yes
interval: 20
runmode: workers
outputs:
- fast:
enabled: no
filename: fast-%Y-%m-%d-%H:%M:%S.log
append: yes
rotate-interval: 120s
- eve-log:
enabled: yes
filetype: regular #regular|syslog|unix_dgram|unix_stream|redis
filename: eve-%Y-%m-%d-%H:%M:%S.json
pcap-file: false
community-id: false
community-id-seed: 0
rotate-interval: 600s
xff:
enabled: no
mode: extra-data
deployment: reverse
header: X-Forwarded-For
types:
- alert:
tagged-packets: yes
- anomaly:
enabled: yes
types:
- http:
extended: no # enable this for extended logging information
- dns:
- tls:
extended: yes # enable this for extended logging information
- files:
force-magic: no # force logging magic on all logged files
- smtp:
- ftp
- nfs
- smb
- tftp
- ikev2
- krb5
- snmp
- dhcp:
enabled: yes
extended: no
- ssh
- stats:
totals: yes # stats for all threads merged together
threads: no # per thread stats
deltas: no # include delta values
#- flow
#- netflow
- unified2-alert:
enabled: no
- http-log:
enabled: no
filename: http.log
append: yes
- tls-log:
enabled: no # Log TLS connections.
filename: tls.log # File to store TLS logs.
append: yes
- tls-store:
enabled: no
- pcap-log:
enabled: no
filename: log.pcap
limit: 1000mb
max-files: 2000
compression: none
mode: normal # normal, multi or sguil.
use-stream-depth: no #If set to "yes" packets seen after reaching stream inspection depth are ignored. "no" logs all packets
honor-pass-rules: no # If set to "yes", flows in which a pass rule matched will stopped being logged.
- alert-debug:
enabled: no
filename: alert-debug.log
append: yes
- alert-prelude:
enabled: no
profile: suricata
log-packet-content: no
log-packet-header: yes
- stats:
enabled: no
filename: stats.log
append: yes # append to file (yes) or overwrite it (no)
totals: yes # stats for all threads merged together
threads: no # per thread stats
rotate-interval: 14400s
- syslog:
enabled: no
facility: local5
- drop:
enabled: no
- file-store:
version: 2
enabled: no
xff:
enabled: no
mode: extra-data
deployment: reverse
header: X-Forwarded-For
- file-store:
enabled: no
- tcp-data:
enabled: no
type: file
filename: tcp-data.log
- http-body-data:
enabled: no
type: file
filename: http-data.log
- lua:
enabled: no
scripts:
logging:
default-log-level: notice
default-output-filter:
outputs:
- console:
enabled: yes
- file:
enabled: yes
level: info
filename: suricata.log
- syslog:
enabled: no
facility: local5
format: "[%i] <%d> -- "
af-packet:
- interface: ens192
threads: 8
defrag: no
cluster-type: cluster_ebpf
ebpf-lb-file: /usr/libexec/suricata/ebpf/lb.bpf
cluster-id: 98
copy-mode: tap
tpacket-v3: no
copy-iface: ens224
buffer-size: 131072
use-mmap: yes
mmap-locked: yes
#ring-size: 100000
- interface: ens224
threads: 8
cluster-id: 97
defrag: no
cluster-type: cluster_ebpf
ebpf-lb-file: /usr/libexec/suricata/ebpf/lb.bpf
copy-mode: tap
tpacket-v3: no
copy-iface: ens192
buffer-size: 131072
use-mmap: yes
mmap-locked: yes
#ring-size: 100000
pcap:
- interface: eth0
- interface: default
pcap-file:
checksum-checks: auto
app-layer:
protocols:
krb5:
enabled: yes
snmp:
enabled: yes
ikev2:
enabled: yes
tls:
enabled: yes
detection-ports:
dp: 443
dcerpc:
enabled: yes
ftp:
enabled: yes
rdp:
ssh:
enabled: yes
smtp:
enabled: yes
raw-extraction: no
mime:
decode-mime: yes
decode-base64: yes
decode-quoted-printable: yes
header-value-depth: 2000
extract-urls: yes
body-md5: no
inspected-tracker:
content-limit: 100000
content-inspect-min-size: 32768
content-inspect-window: 4096
imap:
enabled: detection-only
smb:
enabled: yes
detection-ports:
dp: 139, 445
nfs:
enabled: yes
tftp:
enabled: yes
dns:
tcp:
enabled: yes
detection-ports:
dp: 53
udp:
enabled: yes
detection-ports:
dp: 53
http:
enabled: yes
libhtp:
default-config:
personality: IDS
request-body-limit: 100kb
response-body-limit: 100kb
request-body-minimal-inspect-size: 32kb
request-body-inspect-window: 4kb
response-body-minimal-inspect-size: 40kb
response-body-inspect-window: 16kb
response-body-decompress-layer-limit: 2
http-body-inline: auto
swf-decompression:
enabled: yes
type: both
compress-depth: 0
decompress-depth: 0
double-decode-path: no
double-decode-query: no
server-config:
modbus:
enabled: no
detection-ports:
dp: 502
stream-depth: 0
dnp3:
enabled: no
detection-ports:
dp: 20000
enip:
enabled: no
detection-ports:
dp: 44818
sp: 44818
ntp:
enabled: yes
dhcp:
enabled: yes
sip:
asn1-max-frames: 256
coredump:
max-dump: unlimited
host-mode: auto
unix-command:
enabled: auto
legacy:
uricontent: enabled
engine-analysis:
rules-fast-pattern: yes
rules: yes
pcre:
match-limit: 3500
match-limit-recursion: 1500
host-os-policy:
windows: [0.0.0.0/0]
bsd: []
bsd-right: []
old-linux: []
linux: []
old-solaris: []
solaris: []
hpux10: []
hpux11: []
irix: []
macos: []
vista: []
windows2k3: []
defrag:
memcap: 32mb
hash-size: 65536
trackers: 65535 # number of defragmented flows to follow
max-frags: 65535 # number of fragments to keep (higher than trackers)
prealloc: yes
timeout: 60
flow:
memcap: 1024mb
hash-size: 65536
prealloc: 10000
emergency-recovery: 30
vlan:
use-for-tracking: true
flow-timeouts:
default:
new: 30
established: 300
closed: 0
bypassed: 100
emergency-new: 10
emergency-established: 100
emergency-closed: 0
emergency-bypassed: 50
tcp:
new: 60
established: 600
closed: 60
bypassed: 100
emergency-new: 5
emergency-established: 100
emergency-closed: 10
emergency-bypassed: 50
udp:
new: 30
established: 300
bypassed: 100
emergency-new: 10
emergency-established: 100
emergency-bypassed: 50
icmp:
new: 30
established: 300
bypassed: 100
emergency-new: 10
emergency-established: 100
emergency-bypassed: 50
stream:
memcap: 1024mb
checksum-validation: yes # reject wrong csums
inline: auto # auto will use inline mode in IPS mode, yes or no set it statically
reassembly:
memcap: 256mb
depth: 1mb # reassemble 1mb into a stream
toserver-chunk-size: 2560
toclient-chunk-size: 2560
randomize-chunk-size: yes
host:
hash-size: 4096
prealloc: 1000
memcap: 32mb
decoder:
teredo:
enabled: true
ports: $TEREDO_PORTS # syntax: '[3544, 1234]' or '3533' or 'any'.
vxlan:
enabled: true
ports: $VXLAN_PORTS # syntax: '8472, 4789'
erspan:
typeI:
enabled: false
detect:
profile: high
sgh-mpm-context: auto
inspection-recursion-limit: 3000
prefilter:
default: mpm
grouping:
profiling:
grouping:
dump-to-disk: false
include-rules: false # very verbose
include-mpm-stats: false
mpm-algo: hs #ac hs
spm-algo: hs #bm hs
threading:
set-cpu-affinity: yes
cpu-affinity:
- management-cpu-set:
cpu: [ 0 ] # include only these CPUs in affinity settings
- receive-cpu-set:
cpu: [ 1-3 ] # include only these CPUs in affinity settings
- worker-cpu-set:
cpu: [ 1-7 ]
detect-thread-ratio: 1
luajit:
states: 128
profiling:
rules:
enabled: yes
filename: rule_perf.log
append: yes
limit: 10
json: yes
keywords:
enabled: yes
filename: keyword_perf.log
append: yes
prefilter:
enabled: yes
filename: prefilter_perf.log
append: yes
rulegroups:
enabled: yes
filename: rule_group_perf.log
append: yes
packets:
enabled: yes
filename: packet_stats.log
append: yes
csv:
enabled: no
filename: packet_stats.csv
locks:
enabled: no
filename: lock_stats.log
append: yes
pcap-log:
enabled: no
filename: pcaplog_stats.log
append: yes
nfq:
nflog:
- group: 2
buffer-size: 18432
- group: default
qthreshold: 1
qtimeout: 100
max-size: 20000
capture:
netmap:
- interface: eth2
- interface: default
pfring:
- interface: eth0
threads: auto
cluster-id: 99
cluster-type: cluster_flow
- interface: default
ipfw:
napatech:
streams: ["0-3"]
auto-config: yes
ports: [all]
hashmode: hash5tuplesorted
default-rule-path: /var/lib/suricata/rules
rule-files:
- suricata.rules
classification-file: /etc/suricata/classification.config
reference-config-file: /etc/suricata/reference.config
max-pending-packets: 10000
