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Up to now, I have been using putty + pageant 0.66 to ssh from my Win 10 client to a couple of Linux servers, as in

   Comp A                         Comp B                    Comp C
Win 10, Msys2   ----------->   Ubuntu 18.04   ----------->   RHEL6
     |             Warning                     No warning      ^
     |                                                         |
     |---------------------------------------------------------|
                             No warning

As described here, I was getting a warning about using SHA-1 when connecting A to B.

To fix this, I started using putty + pageant 0.73. Now each ssh authentication from A to B takes about 27s. Before, it was immediate. This is usually not a serious issue. But once in a while it may become a significant inconvenience.

When authenticating from A to C, connection is still immediate.

I wonder whether this is expected, and if it can be mended some way.

1 Answers1

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Answering my own question... All processors were busy at 100% performing calculations by other users in server B. I tested SSHing to a couple of other servers and it worked immediately.