Changing IPsec VPN Ports
there is a way to change the IPsec ports (500 and 4500) ? Because my ISP is blocking this ports.
Use OpenVPN, you can define the server port.
@NogBadTheBad OpenVPN site to site has many problem and very long troubleshooting instructions to do MTU, mmfix, ping delay, packet loss ..... etc
That’s why want to switch to IPsec
You can't change the IPSec ports.
Why? This is theoretically possible.
charon.port 500 UDP port used locally. If set to 0 a random port will be allocated. charon.port_nat_t 4500 UDP port used locally in case of NAT-T. If set to 0 a random port will be allocated. Has to be different from charon.port, otherwise a random port will be allocated.
Thanks all for your kind replies appreciated