A telecommunication company has recently upgraded their teleconference systems to multicast. Additionally, the security team has instituted a new policy which requires VPN to access the company's…

IPSec transport mode encrypts only the payload and not the IP header, which slightly reduces overhead compared to tunnel mode but does not increase total bandwidth utilization on the concentrator.

Disabling ICMP reduces traffic by blocking ping and related control messages, which would decrease rather than increase bandwidth utilization.

Split tunneling disabled forces all network traffic from connected VPN clients through the VPN concentrator rather than allowing internet traffic to route directly, so the concentrator must handle both corporate and multicast video conference traffic simultaneously, dramatically increasing bandwidth consumption.

NAT-traversal encapsulates IPSec in UDP to pass through NAT devices and adds minimal packet overhead, but does not cause a meaningful increase in total bandwidth consumption.