Albert Barnes Commentary Joshua 10:41

"And Joshua smote them from Kadesh-barnea even unto Gaza, and all the country of Goshen, even unto Gibeon." — Joshua 10:41 (ASV)

From Kadesh-barnea unto Gaza - (Numbers 13:26) This limits Joshua’s conquests on the west, as the other line, all the country of Goshen unto Gibeon, does on the east. Goshen (Joshua 15:51) has not been identified. It was in the southern part of the territory of Judah, and is, of course, quite distinct from the Goshen of Genesis 46:28.