BTEL - CGN DNAT Utility
The DNAT utility on BIG-IP CGN servers is used to output the current CG-NAT mappings. This is useful when processing a CALEA requests.
Reverse mapping
sample
dnatutil
206.53.10.171:8872
From (1662558633):
2022-09-07 13:50:33 GMT Pool: _fw_nat_/Common/Public_Deterministic
Reverse mapping for
::,80 -> 206.53.10.171,8872
Using cmp-hash
'dst-ip' and TMM 0:
100.64.3.171
Forward mapping
sample
dnatutil
100.64.0.154 --action forward
Current Mappings
lsn: time=1662558633
lver=4 name=_fw_nat_/Common/Public_Deterministic min=1025 max=65535 why=change
src: 100.64.0.0/19
dst: 206.53.10.0/24
end: node=0/0
mode=addr port1:1=no addr1:1=no
----
Total of 8192
subscriber addrs, 256 translation addrs, 2015 endpoints per subscriber
https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/cgn-implementations-11-5-0/13.html