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Hi<br />
<br />
A client has an IPSec VPN that uses UDP ports 500, 1701 and 4500 <br />
<br />
Is it possible to capture the packets that are sent in response, are they sent to the same port numbers by any chance ? <br />
<br />
thanks<br />
yann
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Hi

A client has an IPSec VPN that uses UDP ports 500, 1701 and 4500 

Is it possible to capture the packets that are sent in response, are they sent to the same port numbers by any chance ? 

thanks
yann

IPSec firewall rules

Internet Protocol Security (IPsec) is a protocol suite for secure Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session. IPsec includes protocols for establishing mutual authentication between agents at the beginning of the session and negotiation of cryptographic keys to be used during the session. IPsec can be used in protecting data flows between a pair of hosts (host-to-host), between a pair of security gateways (network-to-network), or between a security gateway and a host (network-to-host). IPsec is an end-to-end security scheme operating in the Internet Layer of the Internet Protocol Suite.

Internet Protocol Security

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.