I was able to made some more complete tests using tcpdump, which I summarize here (all the time, the tunnel is shown as UP in Smart Monitor, and the connections is either Connected or Succeeded in Azure, showing some traffic).ġ.- tcpdump host (public IPof my Azure gateway) without sending any commands:ġ7:57:56.334561 IP checkpoint.isakmp > 137.117.45.100.isakmp: isakmp: phase 2/others ? #37ġ7:57:58.334778 IP 137.117.45.100.isakmp > checkpoint.isakmp: isakmp: phase 2/others ? #37Ģ.- tcpdump host (public IP of my Azure gateway) sending an SSH command from a VM in the Azure network to a VM in the checkpoint network:ġ7:59:22.248027 IP checkpoint > 137.117.45.100: ESP(spi=0xd4e6b1f0,seq=0x7b), length 100ġ7:59:22.249553 IP 137.117.45.100 > checkpoint: ESP(spi=0xb1a8503e,seq=0x93), length 100ġ7:59:22.249660 IP checkpoint > 137.117.45.100: ESP(spi=0xd4e6b1f0,seq=0x7c), length 100ġ7:59:22.251467 IP 137.117.45.100 > checkpoint: ESP(spi=0xb1a8503e,seq=0x94), length 100
