diff --git a/src/main/java/com/codiary/backend/BackendApplication.java b/src/main/java/com/codiary/backend/BackendApplication.java
index 865c3d0f..fd170659 100644
--- a/src/main/java/com/codiary/backend/BackendApplication.java
+++ b/src/main/java/com/codiary/backend/BackendApplication.java
@@ -4,10 +4,12 @@
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 import org.springframework.scheduling.annotation.EnableScheduling;
+import org.springframework.web.bind.annotation.CrossOrigin;
 
 @SpringBootApplication
 @EnableJpaAuditing
 @EnableScheduling
+@CrossOrigin(origins = {"http://localhost:3000", "https://api.codiary.site", "https://www.codiary.site"})
 public class BackendApplication {
 
     public static void main(String[] args) {
diff --git a/src/main/java/com/codiary/backend/domain/category/controller/CategoryController.java b/src/main/java/com/codiary/backend/domain/category/controller/CategoryController.java
index 204fae22..4315ae09 100644
--- a/src/main/java/com/codiary/backend/domain/category/controller/CategoryController.java
+++ b/src/main/java/com/codiary/backend/domain/category/controller/CategoryController.java
@@ -2,6 +2,7 @@
 
 import com.codiary.backend.domain.category.converter.CategoryConverter;
 import com.codiary.backend.domain.category.dto.CategoryResponseDTO;
+import com.codiary.backend.domain.category.entity.Category;
 import com.codiary.backend.domain.category.service.CategoryService;
 import com.codiary.backend.domain.member.entity.MemberCategory;
 import com.codiary.backend.domain.member.security.CustomMemberDetails;
@@ -43,4 +44,15 @@ public ApiResponse<String> deleteCategory(@PathVariable("member_category_id") Lo
         categoryService.deleteCategory(memberCategoryId, customMemberDetails.getId());
         return ApiResponse.onSuccess(SuccessStatus.CATEGORY_OK, "카테고리 삭제가 완료되었습니다.");
     }
+
+    @Operation(summary = "카테고리 검색", description = "카테고리를 검색합니다.")
+    @GetMapping("/search")
+    public ApiResponse<List<CategoryResponseDTO.SimpleCategoryDTO>> searchCategory(
+            @RequestParam(value = "category", defaultValue = "", required = false) String category,
+            @AuthenticationPrincipal CustomMemberDetails memberDetails
+            ) {
+        Long memberId = memberDetails.getId();
+        List<Category> categories = categoryService.searchCategory(memberId, category);
+        return ApiResponse.onSuccess(SuccessStatus.POST_OK, CategoryConverter.toSimpleCategoryListDTO(categories));
+    }
 }
diff --git a/src/main/java/com/codiary/backend/domain/category/converter/CategoryConverter.java b/src/main/java/com/codiary/backend/domain/category/converter/CategoryConverter.java
index 8408a933..9576b9f4 100644
--- a/src/main/java/com/codiary/backend/domain/category/converter/CategoryConverter.java
+++ b/src/main/java/com/codiary/backend/domain/category/converter/CategoryConverter.java
@@ -1,6 +1,7 @@
 package com.codiary.backend.domain.category.converter;
 
 import com.codiary.backend.domain.category.dto.CategoryResponseDTO;
+import com.codiary.backend.domain.category.entity.Category;
 import com.codiary.backend.domain.member.entity.MemberCategory;
 
 import java.util.List;
@@ -19,4 +20,17 @@ public static List<CategoryResponseDTO.MemberCategoryDTO> toMemberCategoryListDT
                 .map(CategoryConverter::toMemberCategoryDTO)
                 .toList();
     }
+
+    public static CategoryResponseDTO.SimpleCategoryDTO toSimpleCategoryDTO(Category category) {
+        return CategoryResponseDTO.SimpleCategoryDTO.builder()
+                .categoryId(category.getCategoryId())
+                .categoryName(category.getName())
+                .build();
+    }
+
+    public static List<CategoryResponseDTO.SimpleCategoryDTO> toSimpleCategoryListDTO(List<Category> memberCategoryList) {
+        return memberCategoryList.stream()
+                .map(CategoryConverter::toSimpleCategoryDTO)
+                .toList();
+    }
 }
diff --git a/src/main/java/com/codiary/backend/domain/category/dto/CategoryResponseDTO.java b/src/main/java/com/codiary/backend/domain/category/dto/CategoryResponseDTO.java
index 434055bc..faddd708 100644
--- a/src/main/java/com/codiary/backend/domain/category/dto/CategoryResponseDTO.java
+++ b/src/main/java/com/codiary/backend/domain/category/dto/CategoryResponseDTO.java
@@ -15,4 +15,12 @@ public record MemberCategoryDTO(
             String categoryName,
             Long categoryId
     ) {}
+
+    @Builder
+    @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+    @JsonInclude(JsonInclude.Include.NON_NULL)
+    public record SimpleCategoryDTO(
+            Long categoryId,
+            String categoryName
+    ) {}
 }
diff --git a/src/main/java/com/codiary/backend/domain/category/repository/CategoryRepository.java b/src/main/java/com/codiary/backend/domain/category/repository/CategoryRepository.java
index 8a88ee46..3afbb7ef 100644
--- a/src/main/java/com/codiary/backend/domain/category/repository/CategoryRepository.java
+++ b/src/main/java/com/codiary/backend/domain/category/repository/CategoryRepository.java
@@ -3,8 +3,10 @@
 import com.codiary.backend.domain.category.entity.Category;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.List;
 import java.util.Optional;
 
 public interface CategoryRepository extends JpaRepository<Category, Long> {
     Optional<Category> findByName(String name);
+    List<Category> findByNameContaining(String categoryName);
 }
diff --git a/src/main/java/com/codiary/backend/domain/category/service/CategoryService.java b/src/main/java/com/codiary/backend/domain/category/service/CategoryService.java
index 8bb6a34a..980cfc44 100644
--- a/src/main/java/com/codiary/backend/domain/category/service/CategoryService.java
+++ b/src/main/java/com/codiary/backend/domain/category/service/CategoryService.java
@@ -1,5 +1,6 @@
 package com.codiary.backend.domain.category.service;
 
+import com.codiary.backend.domain.category.dto.CategoryResponseDTO;
 import com.codiary.backend.domain.category.entity.Category;
 import com.codiary.backend.domain.category.repository.CategoryRepository;
 import com.codiary.backend.domain.member.entity.Member;
@@ -82,4 +83,12 @@ public Category addCategory(Post post, String categoryName) {
                         .name(categoryName)
                         .build()));
     }
+
+    public List<Category> searchCategory(Long memberId, String category) {
+        //validation: 멤버인지 확인
+        memberRepository.findById(memberId)
+                .orElseThrow(() -> new GeneralException(ErrorStatus.MEMBER_NOT_FOUND));
+
+        return categoryRepository.findByNameContaining(category);
+    }
 }
diff --git a/src/main/java/com/codiary/backend/domain/post/controller/PostController.java b/src/main/java/com/codiary/backend/domain/post/controller/PostController.java
index 72aabe2d..db8bab27 100644
--- a/src/main/java/com/codiary/backend/domain/post/controller/PostController.java
+++ b/src/main/java/com/codiary/backend/domain/post/controller/PostController.java
@@ -1,6 +1,7 @@
 package com.codiary.backend.domain.post.controller;
 
 import com.codiary.backend.domain.alert.service.AlertService;
+import com.codiary.backend.domain.category.dto.CategoryResponseDTO;
 import com.codiary.backend.domain.member.entity.Member;
 import com.codiary.backend.domain.member.security.CustomMemberDetails;
 import com.codiary.backend.domain.member.service.MemberCommandService;
@@ -230,7 +231,6 @@ public ApiResponse<Page<PostResponseDTO.PostPreviewDTO>> searchPost(
         return ApiResponse.onSuccess(SuccessStatus.POST_OK, PostConverter.toPostListResponseDto(postPage));
     }
 
-
     // 게시글의 카테고리 설정 및 변경
     @PatchMapping("/category/{postId}")
     @Operation(summary = "게시글의 카테고리 설정 및 변경 API", description = "게시글의 카테고리를 설정 및 변경합니다.")
diff --git a/src/main/java/com/codiary/backend/domain/post/repository/PostRepositoryImpl.java b/src/main/java/com/codiary/backend/domain/post/repository/PostRepositoryImpl.java
index fc5654ab..dd5db6e1 100644
--- a/src/main/java/com/codiary/backend/domain/post/repository/PostRepositoryImpl.java
+++ b/src/main/java/com/codiary/backend/domain/post/repository/PostRepositoryImpl.java
@@ -49,6 +49,8 @@ public Page<Post> searchPost(Long memberId, String keyword, Pageable pageable) {
                 .from(post)
                 .leftJoin(post.member, member)
                 .leftJoin(member.image, memberImage)
+                .leftJoin(post.team, team).fetchJoin()
+                .orderBy(getOrderBy(pageable.getSort()))
                 .where(keywordEq(keyword)) // Full-Text Search 조건
                 .where(canAccess(memberId))
                 .offset(pageable.getOffset())
@@ -59,6 +61,7 @@ public Page<Post> searchPost(Long memberId, String keyword, Pageable pageable) {
                 .select(post.count())
                 .from(post)
                 .where(keywordEq(keyword))  // Full-Text Search 조건
+                .where(canAccess(memberId))
                 .fetchOne();
 
         return new PageImpl<>(postList, pageable, total);
@@ -118,11 +121,12 @@ public Page<Post> getLatestPostsOfFollowings(Long memberId, Pageable pageable) {
 
     @Override
     public Page<Post> getPostList(Pageable pageable) {
-        OrderSpecifier[] orderSpecifiers = createPostListOrderSpecifier(pageable.getSort());
+        OrderSpecifier[] orderSpecifiers = getOrderBy(pageable.getSort());
 
         List<Post> posts = queryFactory
                 .selectDistinct(post)
                 .from(post)
+                .join(post.team, team).fetchJoin()
                 .where(post.postAccess.eq(PostAccess.ENTIRE))
                 .orderBy(orderSpecifiers)
                 .offset(pageable.getOffset())
@@ -138,7 +142,7 @@ public Page<Post> getPostList(Pageable pageable) {
         return new PageImpl<>(posts, pageable, total);
     }
 
-    private OrderSpecifier[] createPostListOrderSpecifier(Sort sort) {
+    private OrderSpecifier[] getOrderBy(Sort sort) {
         List<OrderSpecifier> orderSpecifiers = new ArrayList<>();
 
         for (Sort.Order order : sort) {
@@ -174,7 +178,7 @@ public Page<Post> getPostsByCategoryId(Long memberId, Long categoryId, Pageable
                 .selectDistinct(post)
                 .from(post)
                 .where(post.categoriesList.any().categoryId.eq(categoryId).and(canAccess(memberId)))
-                .orderBy(createPostListOrderSpecifier(pageable.getSort()))
+                .orderBy(getOrderBy(pageable.getSort()))
                 .offset(pageable.getOffset())
                 .limit(pageable.getPageSize())
                 .fetch();
diff --git a/src/main/java/com/codiary/backend/domain/team/controller/TeamController.java b/src/main/java/com/codiary/backend/domain/team/controller/TeamController.java
index 04703ccf..f5a8e344 100644
--- a/src/main/java/com/codiary/backend/domain/team/controller/TeamController.java
+++ b/src/main/java/com/codiary/backend/domain/team/controller/TeamController.java
@@ -14,6 +14,7 @@
 import com.codiary.backend.global.apiPayload.ApiResponse;
 import com.codiary.backend.global.apiPayload.code.status.SuccessStatus;
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import java.util.List;
 import lombok.RequiredArgsConstructor;
@@ -157,4 +158,14 @@ public ApiResponse<String> deleteTeamBannerImage(
         String response = teamService.deleteTeamBannerImage(teamId, memberId);
         return ApiResponse.onSuccess(SuccessStatus.TEAM_OK, response);
     }
+
+
+    @GetMapping("/list")
+    @Operation(summary = "팀 리스트 조회 API", description = "팀 설정을 위한 팀 전체 리스트를 조회합니다.")
+    public ApiResponse<TeamResponseDTO.TeamPreviewListDTO> findTeams(){
+        List<Team> teams = teamService.getTeams();
+        return ApiResponse.onSuccess(SuccessStatus.TEAM_OK, TeamConverter.toTeamPreviewListDTO(teams));
+    }
+
+
 }
diff --git a/src/main/java/com/codiary/backend/domain/team/converter/TeamConverter.java b/src/main/java/com/codiary/backend/domain/team/converter/TeamConverter.java
index 42697161..fedca4e2 100644
--- a/src/main/java/com/codiary/backend/domain/team/converter/TeamConverter.java
+++ b/src/main/java/com/codiary/backend/domain/team/converter/TeamConverter.java
@@ -9,6 +9,7 @@
 import com.codiary.backend.domain.team.entity.TeamProfileImage;
 import java.util.List;
 import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 
 public class TeamConverter {
     public static TeamResponseDTO.TeamDTO toTeamResponseDto(Team team) {
@@ -96,4 +97,21 @@ public static TeamResponseDTO.TeamImageDTO toTeamImageResponseDTO(TeamBannerImag
                 .url(bannerImage.getImageUrl())
                 .build();
     }
+
+    public static TeamResponseDTO.TeamPreviewDTO toTeamPreviewDTO(Team team) {
+        return TeamResponseDTO.TeamPreviewDTO.builder()
+                .teamId(team.getTeamId())
+                .teamName(team.getName())
+                .build();
+    }
+
+    public static TeamResponseDTO.TeamPreviewListDTO toTeamPreviewListDTO(List<Team> teamList) {
+        List<TeamResponseDTO.TeamPreviewDTO> teamPreviewDTOList = IntStream.range(0, teamList.size())
+                .mapToObj(i->toTeamPreviewDTO(teamList.get(i)))
+                .collect(Collectors.toList());
+        return TeamResponseDTO.TeamPreviewListDTO.builder()
+                .teams(teamPreviewDTOList)
+                .build();
+    }
+
 }
diff --git a/src/main/java/com/codiary/backend/domain/team/dto/response/TeamResponseDTO.java b/src/main/java/com/codiary/backend/domain/team/dto/response/TeamResponseDTO.java
index f1aa9d56..96a890d5 100644
--- a/src/main/java/com/codiary/backend/domain/team/dto/response/TeamResponseDTO.java
+++ b/src/main/java/com/codiary/backend/domain/team/dto/response/TeamResponseDTO.java
@@ -7,7 +7,10 @@
 import java.util.List;
 
 import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
 import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
 
 public class TeamResponseDTO {
 
@@ -88,4 +91,20 @@ public record TeamMemberDTO(
     public record TeamImageDTO(
             String url) {
     }
+
+
+    @JsonInclude(JsonInclude.Include.NON_NULL)
+    @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+    @Builder
+    public record TeamPreviewDTO (
+        Long teamId,
+        String teamName
+    ){}
+
+    @JsonInclude(JsonInclude.Include.NON_NULL)
+    @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+    @Builder
+    public record TeamPreviewListDTO (
+        List<TeamResponseDTO.TeamPreviewDTO> teams
+    ){}
 }
diff --git a/src/main/java/com/codiary/backend/domain/team/service/TeamService.java b/src/main/java/com/codiary/backend/domain/team/service/TeamService.java
index ade45456..d68cfef1 100644
--- a/src/main/java/com/codiary/backend/domain/team/service/TeamService.java
+++ b/src/main/java/com/codiary/backend/domain/team/service/TeamService.java
@@ -18,6 +18,7 @@
 import com.codiary.backend.global.common.uuid.UuidRepository;
 import com.codiary.backend.global.s3.AmazonS3Manager;
 import java.util.ArrayList;
+import java.util.List;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -250,4 +251,9 @@ public String deleteTeamBannerImage(Long teamId, Long memberId) {
         // response: 성공을 반환
         return "성공적으로 삭제되었습니다!";
     }
+
+    public List<Team> getTeams() {
+        return teamRepository.findAllByOrderByTeamIdDesc();
+    }
+
 }
diff --git a/src/main/java/com/codiary/backend/global/config/SecurityConfig.java b/src/main/java/com/codiary/backend/global/config/SecurityConfig.java
index 9deb1023..00847f72 100644
--- a/src/main/java/com/codiary/backend/global/config/SecurityConfig.java
+++ b/src/main/java/com/codiary/backend/global/config/SecurityConfig.java
@@ -7,8 +7,10 @@
 import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.Customizer;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
 import org.springframework.security.config.http.SessionCreationPolicy;
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.security.crypto.password.PasswordEncoder;
@@ -42,16 +44,18 @@ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Excepti
 //
 //        return http.build();
         return http
-                .httpBasic(httpBasic -> httpBasic.disable())
-                .csrf(csrf -> csrf.disable())
+                .httpBasic(AbstractHttpConfigurer::disable)
+                .cors(Customizer.withDefaults())
+                .csrf(AbstractHttpConfigurer::disable)
                 .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
-
                 .authorizeHttpRequests(
                         authorize -> authorize
+                                .requestMatchers("/error").permitAll()
                                 // Member 관련 접근
                                 .requestMatchers("/api/v2/auth/**").permitAll()
-                                .requestMatchers("/api/v2/oauth/**").permitAll()
+                                .requestMatchers("/api/v2/member/**").permitAll()
                                 // Post 관련 접근
+                                .requestMatchers("/api/v2/post/**").permitAll()
                                 .requestMatchers("/api/v2/post/search").permitAll()
                                 .requestMatchers("/api/v2/post","/api/v2/post/{postId}", "/api/v2/post/visibility/{postId}", "/api/v2/post/coauthor/{postId}", "/api/v2/post/category/{postId}").permitAll()
                                 .requestMatchers("/api/v2/post/title/paging", "/api/v2/post/team/{teamId}/{postId}", "/api/v2/post/team/{teamId}/member/{memberId}/paging", "/api/v2/post/project/{projectId}/team/{teamId}/paging").permitAll()
@@ -61,22 +65,28 @@ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Excepti
                                 .requestMatchers("/api/v2/post/latest", "api/v2/post/following").permitAll() // 전체 최신글 조회 & 팔로잉 멤버들의 최신글 조회
 
                                 // Comment 관련 접근
+                                .requestMatchers("api/v2/comment/**").permitAll()
                                 .requestMatchers("/api/v2/post/{post_id}/comment").permitAll() // 게시물에 댓글 생성, 조회
                                 .requestMatchers("/api/v2/comment/{comment_id}/reply").permitAll() // 댓글에 대댓글 생성, 조회
                                 .requestMatchers("/api/v2/comment/{comment_id}").permitAll() // 댓글 & 대댓글 수정 삭제
 
                                 // Team 관련 접근
+                                .requestMatchers("/api/v2/team/**").permitAll()
                                 .requestMatchers("/api/v2/team/team_member").permitAll()
                                 .requestMatchers("/api/v2/team/{team_id}/profile_image").permitAll()
                                 .requestMatchers("/api/v2/team/{team_id}/banner_image").permitAll()
-                                // Bookmark 관련 접근
-                                // Calendar 관련 접근
+
+                                // follow 관련 접근
+                                .requestMatchers("/api/v2/follow/**").permitAll()
+
                                 // Project 관련 접근
+                                .requestMatchers("/api/v2/project/**").permitAll()
                                 // Category 관련 접근
+                                .requestMatchers("/api/v2/category/**").permitAll()
                                 // 알람 관련 접근
-                                .requestMatchers("/api/v2/connect", "/api/v2/disconnect").permitAll()
+                                .requestMatchers("/api/v2/connect", "/api/v2/disconnect", "/api/v2/alert/**").permitAll()
                                 // 기타 관련 접근
-                                .requestMatchers("/", "/api-docs/**", "/api-docs/swagger-config/*", "/swagger-ui/*", "/swagger-ui/**", "/v3/api-docs/**").permitAll()
+                                .requestMatchers("/**", "/api-docs/**", "/api-docs/swagger-config/*", "/swagger-ui/*", "/swagger-ui/**", "/v3/api-docs/**").permitAll()
                                 .anyRequest().authenticated()
                 )
                 .addFilterBefore(new JwtAuthenticationFilter(jwtTokenProvider), EmailPasswordAuthenticationFilter.class).build();
@@ -93,8 +103,10 @@ public PasswordEncoder passwordEncoder() {
     CorsConfigurationSource corsConfigurationSource() {
         CorsConfiguration config = new CorsConfiguration();
         config.setAllowCredentials(true);
-        config.setAllowedOriginPatterns(List.of("*", "http://localhost:3000", "https://www.codiary.site"));
-        config.setAllowedOrigins(List.of("http://localhost:3000", "https://www.codiary.site"));
+        config.setAllowedOriginPatterns(List.of("http://localhost:3000", "https://www.codiary.site", "https://codiary.site", "https://api.codiary.site",
+                "http://localhost:3000/", "https://www.codiary.site/", "https://codiary.site/", "https://api.codiary.site/"));
+        config.setAllowedOrigins(List.of("http://localhost:3000", "https://www.codiary.site", "https://codiary.site", "https://api.codiary.site",
+                "http://localhost:3000/", "https://www.codiary.site/", "https://codiary.site/", "https://api.codiary.site/"));
         config.setAllowedMethods(List.of("GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS"));
         config.setAllowedHeaders(List.of("*"));
         config.setExposedHeaders(List.of("*"));