[Bug 1445625] Re: Change the default RSA generation from 2048 to 4096

[Colin Watson]

OpenSSH 8.0 changes the default RSA key size to 3072 bits.  I think this
is sufficient, so we'll follow that.

** Summary changed:

- Change the default RSA generation from 2048 to 4096
+ Change the default RSA generation from 2048 to 3072

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Title:
  Change the default RSA generation from 2048 to 3072

Status in openssh package in Ubuntu:
  Confirmed

Bug description:
  For security purposes, the Ubuntu Distro should consider changing the
  default RSA generation from 2048 to 4096. This is a could be a
  somewhat disruptive change (e.g. accessing older Cisco devices may not
  work).  We should still try to consider this and target this for
  16.04.

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