topic Re: esx/vsphere firewall blocking off-net VNC connections? in VMware vSphere™ Discussions https://communities.vmware.com/t5/VMware-vSphere-Discussions/esx-vsphere-firewall-blocking-off-net-VNC-connections/m-p/2757020#M35919 <HTML><HEAD></HEAD><BODY><P>The ESXi host should not block the communication, by default it leaves the communication ports open and does not discriminate subnets. Does telnet connect on port 5901? It still seems like something in the network is blocking the connection.</P></BODY></HTML> Tue, 07 Nov 2017 19:46:37 GMT mhampto 2017-11-07T19:46:37Z esx/vsphere firewall blocking off-net VNC connections? https://communities.vmware.com/t5/VMware-vSphere-Discussions/esx-vsphere-firewall-blocking-off-net-VNC-connections/m-p/2757019#M35918 <HTML><HEAD></HEAD><BODY><P>VNC client on 10.80.100.x/24 connects to ESX built in VNC server on 10.80.100.x port 5901 -- works great</P><P>Now place the VNC Client on another subnet 10.80.160.x and it fails.&nbsp; Network is not blocking, I can ssh, ping etc. between the client and esx just fine.</P><P></P><P>Not sure how to navigate the vmware firewall...&nbsp; is there something in the vmware firewall that would allow connections from the subnet where the ESX server resides (local subnet) but not from another network?</P><P></P><P>Thanks!!</P></BODY></HTML> Fri, 27 Oct 2017 03:39:47 GMT https://communities.vmware.com/t5/VMware-vSphere-Discussions/esx-vsphere-firewall-blocking-off-net-VNC-connections/m-p/2757019#M35918 jacksonp2008 2017-10-27T03:39:47Z Re: esx/vsphere firewall blocking off-net VNC connections? https://communities.vmware.com/t5/VMware-vSphere-Discussions/esx-vsphere-firewall-blocking-off-net-VNC-connections/m-p/2757020#M35919 <HTML><HEAD></HEAD><BODY><P>The ESXi host should not block the communication, by default it leaves the communication ports open and does not discriminate subnets. Does telnet connect on port 5901? It still seems like something in the network is blocking the connection.</P></BODY></HTML> Tue, 07 Nov 2017 19:46:37 GMT https://communities.vmware.com/t5/VMware-vSphere-Discussions/esx-vsphere-firewall-blocking-off-net-VNC-connections/m-p/2757020#M35919 mhampto 2017-11-07T19:46:37Z