The incident happened in the Glenmalure Valley.
The Irish Farmers' Association has condemned the assault of a farmer in Wicklow.
It happened in the Glenmalure Valley on Sunday when Pat Dunne told walkers that dogs weren't allowed on the route because of attacks on sheep.
The Dunne family has since made the decision to close public access to the route with immediate effect.
The IFA says this was an isolated incident, but "it does nothing to further co-operation between landowners and recreational users."

Kfm Obituary Notices
Gardaí Investigating Two Connected Burglaries In Kilcullen
Harvey Norman Nationwide Cancer Fundraiser Launched
Major Garda Crackdown In Place On 'Lucky Dip' Criminal Gang
Fuel Price Protests Enter Second Day with Nationwide Action Planned
New Special School In Monasterevin Set To Open For Coming School Year
Rising Fuel Costs Leads To Slow-Moving Protests Through Kildare