srsRAN 5G SA: UE registrated and showing 5G, but can't get Internet

[Enkh7uya]

i am doing srsran 5g sa CU/DU split. i m using Open5gs 5GC i succesfully registered on real UE and shows 5G on the ue. but can not access into internet. help me.

upf.yaml
logger:
file:
path: /var/log/open5gs/upf.log
level: info # fatal|error|warn|info(default)|debug|trace
global:
max:
ue: 1024 # The number of UE can be increased depending on memory size.
upf:
pfcp:
server:
- address: 127.0.0.7
client:
smf: # UPF PFCP Client try to associate SMF PFCP Server
- address: 127.0.0.4
gtpu:
server:
- address: 192.168.100.68 #127.0.0.7
session:
- subnet: 10.45.0.0/16
gateway: 10.45.0.1
- subnet: 2001:db8:cafe::/48
gateway: 2001:db8:cafe::1
metrics:
server:
- address: 127.0.0.7
port: 9090
smf.yaml
GNU nano 6.2 /etc/open5gs/smf.yaml
logger:
file:
path: /var/log/open5gs/smf.log
level: info # fatal|error|warn|info(default)|debug|trace

global:
max:
ue: 1024 # The number of UE can be increased depending on memory size.

smf:
sbi:
server:
- address: 127.0.0.4
port: 7777
client:

  scp:
    - uri: http://127.0.0.200:7777

pfcp:
server:
- address: 127.0.0.4
client:
upf:
- address: 127.0.0.7
gtpc:
server:
- address: 127.0.0.4
gtpu:
server:
- address: 127.0.0.4
metrics:
server:
- address: 127.0.0.4
port: 9090
session:
- subnet: 10.45.0.0/16
gateway: 10.45.0.1
- subnet: 2001:db8:cafe::/48
gateway: 2001:db8:cafe::1
dns:
- 8.8.8.8
- 8.8.4.4
- 2001:4860:4860::8888
- 2001:4860:4860::8844
mtu: 1400

[antonioo420]

Hi, you need to enable forwarding and create a NAT rule in order to get internet connection.

### Enable IPv4/IPv6 Forwarding
$ sudo sysctl -w net.ipv4.ip_forward=1

### Add NAT Rule
$ sudo iptables -t nat -A POSTROUTING -s 10.45.0.0/16 ! -o ogstun -j MASQUERADE