  We investigate the pathwise well-posedness of stochastic evolution equations
perturbed by multiplicative Neumann boundary noise, such as fractional Brownian
motion for $H\in(1/3,1/2]$. Combining the controlled rough path approach with
the theory of extrapolation operators, we establish global existence of
solutions and flows for such equations. For Dirichlet boundary noise we obtain
similar results in the Young regime.
