> ## Documentation Index > Fetch the complete documentation index at: https://gcore.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Add security group rule > Add a new rule to an existing security group. **Deprecated** Use `/v2/security_groups////rules` instead. ## OpenAPI ````yaml /api-reference/services_documented/cloud_api.yaml post /cloud/v1/securitygroups/{project_id}/{region_id}/{group_id}/rules openapi: 3.1.0 info: title: Gcore OpenAPI – Cloud API description: >- This OpenAPI is an aggregated OpenAPI specification that unifies all Gcore products into a single file. It covers Cloud, CDN, DNS, WAAP, DDoS Protection, Object Storage, Streaming, and FastEdge services. version: '2026-05-07T20:33:46.548242+00:00' servers: - url: https://api.gcore.com security: - APIKey: [] tags: - name: Bare Metal x-displayName: Bare Metal - name: Container as a Service x-displayName: Container as a Service - name: Cost Reports x-displayName: Cost Reports - name: DDoS Protection x-displayName: DDoS Protection - name: Everywhere Inference x-displayName: Everywhere Inference - name: Everywhere Inference Apps x-displayName: Everywhere Inference Apps - name: File Shares x-displayName: File Shares - name: Floating IPs x-displayName: Floating IPs - name: Function as a Service x-displayName: Function as a Service - name: GPU Bare Metal x-displayName: GPU Bare Metal - name: GPU Virtual x-displayName: GPU Virtual - name: IP Ranges x-displayName: IP Ranges - name: Images x-displayName: Images - name: Instances x-displayName: Instances - name: Load Balancers x-displayName: Load Balancers - name: Logging x-displayName: Logging - name: Managed Kubernetes x-displayName: Managed Kubernetes - name: Managed PostgreSQL x-displayName: Managed PostgreSQL - name: Networks x-displayName: Networks - name: Placement Groups x-displayName: Placement Groups - name: Projects x-displayName: Projects - name: Quotas x-displayName: Quotas - name: Regions x-displayName: Regions - name: Registry x-displayName: Registry - name: Reservations x-displayName: Reservations - name: Reserved IPs x-displayName: Reserved IPs - name: Routers x-displayName: Routers - name: SSH Keys x-displayName: SSH Keys - name: Secrets x-displayName: Secrets - name: Security Groups x-displayName: Security Groups - name: Snapshot Schedules x-displayName: Snapshot Schedules - name: Snapshots x-displayName: Snapshots - name: Tasks x-displayName: Tasks - name: User Actions x-displayName: User Actions - name: User Role Assignments x-displayName: User Role Assignments - name: Volumes x-displayName: Volumes paths: /cloud/v1/securitygroups/{project_id}/{region_id}/{group_id}/rules: post: tags: - Security Groups summary: Add security group rule description: >- Add a new rule to an existing security group. **Deprecated** Use `/v2/security_groups////rules` instead. operationId: SecurityRulesView.post parameters: - in: path name: project_id required: true description: Project ID schema: description: Project ID example: 1 examples: - 1 title: Project Id type: integer - in: path name: region_id required: true description: Region ID schema: description: Region ID example: 1 examples: - 1 title: Region Id type: integer - in: path name: group_id required: true description: Group ID schema: description: Group ID example: 024a29e9-b4b7-4c91-9a46-505be123d9f8 examples: - 024a29e9-b4b7-4c91-9a46-505be123d9f8 format: uuid4 title: Group Id type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/CreateSecurityGroupRuleSerializer' responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/SecurityGroupRuleSerializer' deprecated: true components: schemas: CreateSecurityGroupRuleSerializer: properties: description: description: Rule description example: Some description examples: - Some description maxLength: 255 title: Description type: string direction: description: >- Ingress or egress, which is the direction in which the security group is applied enum: - egress - ingress example: ingress examples: - ingress title: Direction type: string ethertype: description: Ether type enum: - IPv4 - IPv6 example: IPv4 examples: - IPv4 title: Ethertype type: string port_range_max: anyOf: - maximum: 65535 minimum: 0 type: integer - type: 'null' description: >- The maximum port number in the range that is matched by the security group rule examples: - 80 title: Port Range Max port_range_min: anyOf: - maximum: 65535 minimum: 0 type: integer - type: 'null' description: >- The minimum port number in the range that is matched by the security group rule examples: - 80 title: Port Range Min protocol: $ref: '#/components/schemas/SecurityGroupProtocolEnum' description: Protocol examples: - tcp remote_group_id: description: The remote group UUID to associate with this security group example: 00000000-0000-4000-8000-000000000000 examples: - 00000000-0000-4000-8000-000000000000 format: uuid4 title: Remote Group Id type: string remote_ip_prefix: anyOf: - format: ipvanynetwork type: string - type: 'null' description: The remote IP prefix that is matched by this security group rule examples: - 10.0.0.0/8 title: Remote Ip Prefix required: - direction title: CreateSecurityGroupRuleSerializer type: object SecurityGroupRuleSerializer: properties: created_at: description: Datetime when the rule was created example: 2019-06-18T11:56:16+0000 examples: - 2019-06-18T11:56:16+0000 format: date-time title: Created At type: string description: anyOf: - type: string - type: 'null' description: Rule description examples: - Some description title: Description direction: description: >- Ingress or egress, which is the direction in which the security group rule is applied enum: - egress - ingress title: Direction type: string ethertype: anyOf: - enum: - IPv4 - IPv6 type: string - type: 'null' description: >- Must be IPv4 or IPv6, and addresses represented in CIDR must match the ingress or egress rules. examples: - IPv4 title: Ethertype id: description: The ID of the security group rule example: 00000000-0000-4000-8000-000000000000 examples: - 00000000-0000-4000-8000-000000000000 format: uuid4 title: Id type: string port_range_max: anyOf: - maximum: 65535 minimum: 0 type: integer - type: 'null' description: >- The maximum port number in the range that is matched by the security group rule examples: - 80 title: Port Range Max port_range_min: anyOf: - maximum: 65535 minimum: 0 type: integer - type: 'null' description: >- The minimum port number in the range that is matched by the security group rule examples: - 80 title: Port Range Min protocol: anyOf: - $ref: '#/components/schemas/SecurityGroupProtocolEnum' - type: 'null' description: Protocol examples: - tcp remote_group_id: anyOf: - format: uuid4 type: string - type: 'null' description: The remote group UUID to associate with this security group rule examples: - - 00000000-0000-4000-8000-000000000000 title: Remote Group Id remote_ip_prefix: anyOf: - format: ipvanynetwork type: string - type: 'null' description: The remote IP prefix that is matched by this security group rule examples: - 10.0.0.0/8 title: Remote Ip Prefix revision_number: description: The revision number of the resource example: 0 examples: - 0 title: Revision Number type: integer security_group_id: description: The security group ID to associate with this security group rule example: 00000000-0000-4000-8000-000000000000 examples: - 00000000-0000-4000-8000-000000000000 format: uuid4 title: Security Group Id type: string updated_at: description: Datetime when the rule was last updated example: 2019-06-18T11:57:00+0000 examples: - 2019-06-18T11:57:00+0000 format: date-time title: Updated At type: string required: - id - security_group_id - created_at - updated_at - revision_number - ethertype - description - remote_group_id - port_range_min - port_range_max - remote_ip_prefix - protocol - direction title: SecurityGroupRuleSerializer type: object SecurityGroupProtocolEnum: enum: - ah - any - dccp - egp - esp - gre - icmp - igmp - ipencap - ipip - ipv6-encap - ipv6-frag - ipv6-icmp - ipv6-nonxt - ipv6-opts - ipv6-route - ospf - pgm - rsvp - sctp - tcp - udp - udplite - vrrp title: SecurityGroupProtocolEnum type: string securitySchemes: APIKey: description: >- API key for authentication. Make sure to include the word `apikey`, followed by a single space and then your token. Example: `apikey 1234$abcdef` type: apiKey in: header name: Authorization ````