Node durian.iotasalad.org is offline. See
here to check and find a node from iotasalad.org that is online and completely synchronized. I prefer patato.iotasalad, it works for me.
Rather, I recommend to use the node list from
iota.dance to find a good node. I have never had any connection problems by choosing a node from the list with a good number of neighbors, current milestone and less load.
I entered the node
https://potato.iotasalad.org:14265 and got this message:
Duplicated node - The custom node is already listed.
Ok, then I found this node in the list clicked Save and got a message: Node out of sync. Change node or try again. I tried few times.
I tried this one too
https://peanut.iotasalad.org:14265 with the same result (out of sync).
For most nodes in the list I get a message - Node out of sync. For the rest nodes - Error changing node.