▁University ▁of ▁California ▁at ▁Ber keley , ▁where ▁he ▁was ▁also ▁in ▁charge ▁of ▁the ▁university ' s ▁work ▁for ▁the ▁Pent agon ' s ▁Advanced ▁Research ▁Project ▁Agency ▁( AR PA ). ▁In ▁ 1 9 6 5 , ▁Evans ▁was ▁rec ru ited ▁back ▁to ▁Salt ▁Lake ▁City ▁to ▁create ▁a ▁computer ▁science ▁department ▁at ▁the ▁University ▁of ▁Ut ah , ▁and ▁brought ▁Do D ▁contacts ▁with ▁him , ▁including ▁Ivan ▁S uther land . ▁Evans ▁and ▁S uther land ▁continued ▁their ▁work ▁on ▁AR PA ▁for ▁the ▁Do D ▁with ▁their ▁colle agues ▁in ▁California ▁and ▁helped ▁to ▁establish ▁AR P AN ET , ▁an ▁" ear ly ▁packet ▁switching ▁network ▁and ▁the ▁first ▁network ▁to ▁implement ▁the ▁protocol ▁suite ▁TCP / IP ." ▁Both ▁of ▁these ▁techn ologies ▁form ▁the ▁technical ▁foundation ▁of ▁the ▁internet . ▁In ▁ 1 9 6 9 , ▁the ▁University ▁of ▁Ut ah ▁was ▁one ▁of ▁the ▁original ▁four ▁nodes ▁of ▁AR P AN ET , ▁c ement ing ▁its ▁place ▁in ▁military ▁and ▁techn ological ▁history . ▁ ▁Due ▁to ▁this ▁early ▁partners hip ▁with ▁the ▁Do D , ▁Ut ah ▁was ▁able ▁to ▁encou rage ▁more ▁joint ▁vent ures ▁with ▁the ▁military . ▁Not ▁only ▁was ▁Ut ah ▁capable ▁of ▁developing ▁high - tech ▁infrastr ucture , ▁many ▁ge ographic ▁and ▁natural ▁characteristics ▁were ▁appe aling ▁to ▁the ▁Do D . ▁Ut ah ▁is ▁ge ograph ically ▁isolated ▁from ▁both ▁the ▁east ▁and ▁west ▁coast s , ▁providing ▁higher ▁security ▁and ▁less