app-routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { HomeComponent } from './home/home.component';
import { AuthenticationGuard } from './authentication.guard';

const routes: Routes = [
  { path: '*', pathMatch: 'full', redirectTo: 'home' },
  { path: 'home', component: HomeComponent, canActivate: [AuthenticationGuard] }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }