diff --git a/bin/p6lzctl b/bin/p6lzctl
index 532655d..7b00d5c 100755
--- a/bin/p6lzctl
+++ b/bin/p6lzctl
@@ -719,6 +719,14 @@ p6_lz_run_phase_4_sandbox_account() {
   local action="$1"
 
   p6_h2 "Phase 4: Sandbox"
+
+  p6_h3 "Phase 4: Sandbox: My IP"
+  local my_ip=$(p6_network_ip_public)
+  local cidr_ip="$my_ip/32"
+  jq --arg ip "$cidr_ip" '.["my-ip"] = $ip' cdk.context.json >tmp.$$.json
+  p6_file_move tmp.$$.json cdk.context.json
+
+  p6_h3 "Phase 4: Sandbox: CDK"
   p6_awscdk_cli_execute $action p6-lz-sandbox
 
   p6_return_void
diff --git a/node-v22.11.0-linux-x64.tar.xz b/node-v22.11.0-linux-x64.tar.xz
deleted file mode 100644
index cdc6a6f..0000000
Binary files a/node-v22.11.0-linux-x64.tar.xz and /dev/null differ
diff --git a/src/constructs/p6-lz-sra-central-bucket.ts b/src/constructs/p6-lz-sra-central-bucket.ts
index 3fedd82..9db5502 100644
--- a/src/constructs/p6-lz-sra-central-bucket.ts
+++ b/src/constructs/p6-lz-sra-central-bucket.ts
@@ -1,6 +1,6 @@
 import type { IPrincipal } from 'aws-cdk-lib/aws-iam'
 import type { Construct } from 'constructs'
-import type { ShareWithOrg } from '../types'
+import type { IShareWithOrg } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import * as iam from 'aws-cdk-lib/aws-iam'
 import * as kms from 'aws-cdk-lib/aws-kms'
@@ -29,7 +29,7 @@ import * as s3 from 'aws-cdk-lib/aws-s3'
  *
  */
 
-export interface IP6LzSraCentralBucketProps extends ShareWithOrg {}
+export interface IP6LzSraCentralBucketProps extends IShareWithOrg {}
 
 export class P6LzSraCentralBucket extends cdk.Resource {
   constructor(scope: Construct, id: string, props: IP6LzSraCentralBucketProps) {
diff --git a/src/constructs/p6-lz-sra-cloudwatch.ts b/src/constructs/p6-lz-sra-cloudwatch.ts
index efe532c..d7e9a58 100644
--- a/src/constructs/p6-lz-sra-cloudwatch.ts
+++ b/src/constructs/p6-lz-sra-cloudwatch.ts
@@ -1,11 +1,11 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias } from '../types'
+import type { IAccountAlias } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import * as iam from 'aws-cdk-lib/aws-iam'
 import * as kms from 'aws-cdk-lib/aws-kms'
 import * as logs from 'aws-cdk-lib/aws-logs'
 
-export interface IP6LzSraCloudWatchProps extends AccountAlias {}
+export interface IP6LzSraCloudWatchProps extends IAccountAlias {}
 
 export class P6LzSraCloudWatch extends cdk.Resource {
   public readonly logGroup: logs.ILogGroup
diff --git a/src/constructs/p6-lz-sra-config.ts b/src/constructs/p6-lz-sra-config.ts
index 49b9fae..9dc7b4a 100644
--- a/src/constructs/p6-lz-sra-config.ts
+++ b/src/constructs/p6-lz-sra-config.ts
@@ -1,11 +1,11 @@
 import type { Construct } from 'constructs'
-import type { LogarchiveBucket, ShareWithOrg } from '../types'
+import type { ILogarchiveBucket, IShareWithOrg } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import * as config from 'aws-cdk-lib/aws-config'
 import * as iam from 'aws-cdk-lib/aws-iam'
 import * as kms from 'aws-cdk-lib/aws-kms'
 
-export interface IP6LzSraConfigProps extends ShareWithOrg, LogarchiveBucket {
+export interface IP6LzSraConfigProps extends IShareWithOrg, ILogarchiveBucket {
   // @default false
   isCentral?: boolean
 }
diff --git a/src/constructs/p6-lz-sra-org-trail.ts b/src/constructs/p6-lz-sra-org-trail.ts
index 84e6169..6be8914 100644
--- a/src/constructs/p6-lz-sra-org-trail.ts
+++ b/src/constructs/p6-lz-sra-org-trail.ts
@@ -1,12 +1,12 @@
 import type * as logs from 'aws-cdk-lib/aws-logs'
 import type { Construct } from 'constructs'
-import type { LogarchiveBucket } from '../types'
+import type { ILogarchiveBucket } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import * as cloudtrail from 'aws-cdk-lib/aws-cloudtrail'
 import * as iam from 'aws-cdk-lib/aws-iam'
 import * as kms from 'aws-cdk-lib/aws-kms'
 
-export interface IP6LzSraOrgTrailProps extends LogarchiveBucket {
+export interface IP6LzSraOrgTrailProps extends ILogarchiveBucket {
   logGroup: logs.ILogGroup
   logRole: iam.IRole
 }
diff --git a/src/constructs/p6-lz-vpc.ts b/src/constructs/p6-lz-vpc.ts
new file mode 100644
index 0000000..7a3a2bd
--- /dev/null
+++ b/src/constructs/p6-lz-vpc.ts
@@ -0,0 +1,54 @@
+import type { Construct } from 'constructs'
+import type { IVpc } from '../types'
+import * as cdk from 'aws-cdk-lib'
+import * as ec2 from 'aws-cdk-lib/aws-ec2'
+
+export interface IP6LzVpcProps extends cdk.StackProps, IVpc {}
+
+export class P6LzVpc extends cdk.Resource {
+  constructor(scope: Construct, id: string, props: IP6LzVpcProps) {
+    super(scope, id)
+
+    const vpc = new ec2.Vpc(this, 'VPC', {
+      ipAddresses: props.cidr,
+      maxAzs: 4,
+      subnetConfiguration: [
+        {
+          cidrMask: 20,
+          name: 'Bastion',
+          subnetType: ec2.SubnetType.PUBLIC,
+        },
+        {
+          cidrMask: 20,
+          name: 'Public',
+          subnetType: ec2.SubnetType.PUBLIC,
+        },
+        {
+          cidrMask: 20,
+          name: 'Private',
+          subnetType: ec2.SubnetType.PRIVATE_WITH_EGRESS,
+        },
+        {
+          cidrMask: 20,
+          name: 'Isolated',
+          subnetType: ec2.SubnetType.PRIVATE_ISOLATED,
+        },
+      ],
+    })
+
+    const bastion = new ec2.BastionHostLinux(this, 'p6-lz-bastion', {
+      instanceName: 'p6-lz-bastion',
+      vpc,
+      subnetSelection: { subnetType: ec2.SubnetType.PUBLIC },
+      instanceType: new ec2.InstanceType('t4g.nano'),
+    })
+    bastion.allowSshAccessFrom(props.myIp)
+
+    const sg = new ec2.SecurityGroup(this, 'p6-lz-sg-default', {
+      vpc,
+      allowAllOutbound: true,
+    })
+    sg.addIngressRule(bastion.connections.securityGroups[0]!, ec2.Port.SSH, 'Allow SSH from Bastion Host')
+    cdk.Tags.of(sg).add('Name', 'p6-lz-sg-default')
+  }
+}
diff --git a/src/deploy.ts b/src/deploy.ts
index f7a1817..9cee1a1 100644
--- a/src/deploy.ts
+++ b/src/deploy.ts
@@ -2,6 +2,7 @@
 
 import process from 'node:process'
 import * as cdk from 'aws-cdk-lib'
+import * as ec2 from 'aws-cdk-lib/aws-ec2'
 import { AuditAccountStack1 } from './stacks/audit-1'
 import { AuditAccountStack2 } from './stacks/audit-2'
 import { AuditAccountStack3 } from './stacks/audit-3'
@@ -36,6 +37,7 @@ const prodAccountId = accounts.find(account => account.Name === 'prod')?.Account
 const qaAccountId = accounts.find(account => account.Name === 'qa')?.AccountId ?? '012345678912'
 const sharedAccountId = accounts.find(account => account.Name === 'shared')?.AccountId ?? '012345678912'
 const sandboxAccountId = accounts.find(account => account.Name === 'sandbox')?.AccountId ?? '012345678912'
+const myIp = app.node.tryGetContext('my-ip') ?? '0.0.0.1/32'
 
 const principals: string[] = [
   auditAccountId,
@@ -158,6 +160,8 @@ new SandboxAccountStack(app, 'p6-lz-sandbox', {
     region: env.region,
   },
   accountAlias: 'p6m7g8-sandbox',
+  cidr: ec2.IpAddresses.cidr('10.252.0.0/16'),
+  myIp: ec2.Peer.ipv4(myIp),
 })
 
 // Dev Account
@@ -167,6 +171,8 @@ new DevAccountStack(app, 'p6-lz-dev', {
     region: env.region,
   },
   accountAlias: 'p6m7g8-dev',
+  cidr: ec2.IpAddresses.cidr('10.253.0.0/16'),
+  myIp: ec2.Peer.ipv4(myIp),
 })
 
 // QA
@@ -176,6 +182,8 @@ new QaAccountStack(app, 'p6-lz-qa', {
     region: env.region,
   },
   accountAlias: 'p6m7g8-qa',
+  cidr: ec2.IpAddresses.cidr('10.254.0.0/16'),
+  myIp: ec2.Peer.ipv4(myIp),
 })
 
 // Prod
@@ -185,6 +193,8 @@ new ProdAccountStack(app, 'p6-lz-prod', {
     region: env.region,
   },
   accountAlias: 'p6m7g8-prod',
+  cidr: ec2.IpAddresses.cidr('10.255.0.0/16'),
+  myIp: ec2.Peer.ipv4(myIp),
 })
 
 app.synth()
diff --git a/src/stacks/audit-1.ts b/src/stacks/audit-1.ts
index 2bce6a7..8fc5fac 100644
--- a/src/stacks/audit-1.ts
+++ b/src/stacks/audit-1.ts
@@ -1,12 +1,12 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias, LogarchiveBucketArn, ShareWithOrg } from '../types'
+import type { IAccountAlias, ILogarchiveBucketArn, IShareWithOrg } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import * as s3 from 'aws-cdk-lib/aws-s3'
 import { P6CDKNamer } from 'p6-cdk-namer'
 import { P6LzSraCloudWatch } from '../constructs/p6-lz-sra-cloudwatch'
 import { P6LzSraOrgTrail } from '../constructs/p6-lz-sra-org-trail'
 
-interface AuditAccountStack1Props extends cdk.StackProps, AccountAlias, ShareWithOrg, LogarchiveBucketArn {}
+interface AuditAccountStack1Props extends cdk.StackProps, IAccountAlias, IShareWithOrg, ILogarchiveBucketArn {}
 
 export class AuditAccountStack1 extends cdk.Stack {
   constructor(scope: Construct, id: string, props: AuditAccountStack1Props) {
diff --git a/src/stacks/audit-2.ts b/src/stacks/audit-2.ts
index 0db1dd0..61da0d3 100644
--- a/src/stacks/audit-2.ts
+++ b/src/stacks/audit-2.ts
@@ -1,13 +1,13 @@
 import type { Construct } from 'constructs'
-import type { ShareWithOrg } from '../types'
-import type { LogarchiveBucketArn } from './../types'
+import type { IShareWithOrg } from '../types'
+import type { ILogarchiveBucketArn } from './../types'
 import * as cdk from 'aws-cdk-lib'
 import * as s3 from 'aws-cdk-lib/aws-s3'
 import { P6LzSraChatbot } from '../constructs/p6-lz-sra-chatbot'
 import { P6LzSraConfig } from '../constructs/p6-lz-sra-config'
 import { P6LzSraSecurityhub } from '../constructs/p6-lz-sra-security-hub'
 
-interface AuditAccountStack2Props extends cdk.StackProps, ShareWithOrg, LogarchiveBucketArn {}
+interface AuditAccountStack2Props extends cdk.StackProps, IShareWithOrg, ILogarchiveBucketArn {}
 
 export class AuditAccountStack2 extends cdk.Stack {
   constructor(scope: Construct, id: string, props: AuditAccountStack2Props) {
diff --git a/src/stacks/dev.ts b/src/stacks/dev.ts
index 18a832e..b623ee9 100644
--- a/src/stacks/dev.ts
+++ b/src/stacks/dev.ts
@@ -1,9 +1,10 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias } from '../types'
+import type { IAccountAlias, IVpc } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import { P6CDKNamer } from 'p6-cdk-namer'
+import { P6LzVpc } from '../constructs/p6-lz-vpc'
 
-interface DevAccountStack2Props extends cdk.StackProps, AccountAlias {}
+interface DevAccountStack2Props extends cdk.StackProps, IAccountAlias, IVpc {}
 
 export class DevAccountStack extends cdk.Stack {
   constructor(scope: Construct, id: string, props: DevAccountStack2Props) {
@@ -12,5 +13,10 @@ export class DevAccountStack extends cdk.Stack {
     new P6CDKNamer(this, 'P6CDKNamer', {
       accountAlias: props.accountAlias,
     })
+
+    new P6LzVpc(this, 'P6LzVpc', {
+      cidr: props.cidr,
+      myIp: props.myIp,
+    })
   }
 }
diff --git a/src/stacks/logarchive-1.ts b/src/stacks/logarchive-1.ts
index 0a6aca1..9f4f7d9 100644
--- a/src/stacks/logarchive-1.ts
+++ b/src/stacks/logarchive-1.ts
@@ -1,10 +1,10 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias, ShareWithOrg } from '../types'
+import type { IAccountAlias, IShareWithOrg } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import { P6CDKNamer } from 'p6-cdk-namer'
 import { P6LzSraCentralBucket } from '../constructs/p6-lz-sra-central-bucket'
 
-interface LogarchiveAccountStack1Props extends cdk.StackProps, AccountAlias, ShareWithOrg {}
+interface LogarchiveAccountStack1Props extends cdk.StackProps, IAccountAlias, IShareWithOrg {}
 
 export class LogarchiveAccountStack1 extends cdk.Stack {
   constructor(scope: Construct, id: string, props: LogarchiveAccountStack1Props) {
diff --git a/src/stacks/logarchive-2.ts b/src/stacks/logarchive-2.ts
index 5b6e3dd..f2f0183 100644
--- a/src/stacks/logarchive-2.ts
+++ b/src/stacks/logarchive-2.ts
@@ -1,10 +1,10 @@
 import type { Construct } from 'constructs'
-import type { LogarchiveBucketArn, ShareWithOrg } from '../types'
+import type { ILogarchiveBucketArn, IShareWithOrg } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import * as s3 from 'aws-cdk-lib/aws-s3'
 import { P6LzSraConfig } from '../constructs/p6-lz-sra-config'
 
-interface LogarchiveAccountStack2Props extends cdk.StackProps, LogarchiveBucketArn, ShareWithOrg {}
+interface LogarchiveAccountStack2Props extends cdk.StackProps, ILogarchiveBucketArn, IShareWithOrg {}
 
 export class LogarchiveAccountStack2 extends cdk.Stack {
   constructor(scope: Construct, id: string, props: LogarchiveAccountStack2Props) {
diff --git a/src/stacks/management-1-organization.ts b/src/stacks/management-1-organization.ts
index 6c59c87..764fd9e 100644
--- a/src/stacks/management-1-organization.ts
+++ b/src/stacks/management-1-organization.ts
@@ -1,10 +1,10 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias } from '../types'
+import type { IAccountAlias } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import { P6CDKNamer } from 'p6-cdk-namer'
 // import { CfnOrganization } from 'aws-cdk-lib/aws-organizations'
 
-interface OrganizationStackProps extends cdk.StackProps, AccountAlias {}
+interface OrganizationStackProps extends cdk.StackProps, IAccountAlias {}
 
 export class OrganizationStack extends cdk.Stack {
   public readonly centralBucketArn: string
diff --git a/src/stacks/network-1.ts b/src/stacks/network-1.ts
index fc3906c..6b1ad74 100644
--- a/src/stacks/network-1.ts
+++ b/src/stacks/network-1.ts
@@ -1,9 +1,9 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias, ShareWithOrg } from '../types'
+import type { IAccountAlias, IShareWithOrg } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import { P6CDKNamer } from 'p6-cdk-namer'
 
-interface NetworkAccountStack1Props extends cdk.StackProps, AccountAlias, ShareWithOrg {}
+interface NetworkAccountStack1Props extends cdk.StackProps, IAccountAlias, IShareWithOrg {}
 
 export class NetworkAccountStack1 extends cdk.Stack {
   constructor(scope: Construct, id: string, props: NetworkAccountStack1Props) {
diff --git a/src/stacks/network-2.ts b/src/stacks/network-2.ts
index 51e82d6..d68637a 100644
--- a/src/stacks/network-2.ts
+++ b/src/stacks/network-2.ts
@@ -1,10 +1,10 @@
 import type { Construct } from 'constructs'
-import type { LogarchiveBucketArn, ShareWithOrg } from './../types'
+import type { ILogarchiveBucketArn, IShareWithOrg } from './../types'
 import * as cdk from 'aws-cdk-lib'
 import * as s3 from 'aws-cdk-lib/aws-s3'
 import { P6LzSraConfig } from '../constructs/p6-lz-sra-config'
 
-interface NetworkAccountStack2Props extends cdk.StackProps, LogarchiveBucketArn, ShareWithOrg {}
+interface NetworkAccountStack2Props extends cdk.StackProps, ILogarchiveBucketArn, IShareWithOrg {}
 
 export class NetworkAccountStack2 extends cdk.Stack {
   constructor(scope: Construct, id: string, props: NetworkAccountStack2Props) {
diff --git a/src/stacks/prod.ts b/src/stacks/prod.ts
index 94a46d2..771360f 100644
--- a/src/stacks/prod.ts
+++ b/src/stacks/prod.ts
@@ -1,9 +1,10 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias } from '../types'
+import type { IAccountAlias, IVpc } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import { P6CDKNamer } from 'p6-cdk-namer'
+import { P6LzVpc } from '../constructs/p6-lz-vpc'
 
-interface ProdAccountStack2Props extends cdk.StackProps, AccountAlias {}
+interface ProdAccountStack2Props extends cdk.StackProps, IAccountAlias, IVpc {}
 
 export class ProdAccountStack extends cdk.Stack {
   constructor(scope: Construct, id: string, props: ProdAccountStack2Props) {
@@ -12,5 +13,10 @@ export class ProdAccountStack extends cdk.Stack {
     new P6CDKNamer(this, 'P6CDKNamer', {
       accountAlias: props.accountAlias,
     })
+
+    new P6LzVpc(this, 'P6LzVpc', {
+      cidr: props.cidr,
+      myIp: props.myIp,
+    })
   }
 }
diff --git a/src/stacks/qa.ts b/src/stacks/qa.ts
index 75bc244..972ce29 100644
--- a/src/stacks/qa.ts
+++ b/src/stacks/qa.ts
@@ -1,9 +1,10 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias } from '../types'
+import type { IAccountAlias, IVpc } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import { P6CDKNamer } from 'p6-cdk-namer'
+import { P6LzVpc } from '../constructs/p6-lz-vpc'
 
-interface QaAccountStack2Props extends cdk.StackProps, AccountAlias {}
+interface QaAccountStack2Props extends cdk.StackProps, IAccountAlias, IVpc {}
 
 export class QaAccountStack extends cdk.Stack {
   constructor(scope: Construct, id: string, props: QaAccountStack2Props) {
@@ -12,5 +13,10 @@ export class QaAccountStack extends cdk.Stack {
     new P6CDKNamer(this, 'P6CDKNamer', {
       accountAlias: props.accountAlias,
     })
+
+    new P6LzVpc(this, 'P6LzVpc', {
+      cidr: props.cidr,
+      myIp: props.myIp,
+    })
   }
 }
diff --git a/src/stacks/sandbox.ts b/src/stacks/sandbox.ts
index 2cc34e3..bffd108 100644
--- a/src/stacks/sandbox.ts
+++ b/src/stacks/sandbox.ts
@@ -1,9 +1,10 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias } from '../types'
+import type { IAccountAlias, IVpc } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import { P6CDKNamer } from 'p6-cdk-namer'
+import { P6LzVpc } from '../constructs/p6-lz-vpc'
 
-interface SandboxAccountStack2Props extends cdk.StackProps, AccountAlias {}
+interface SandboxAccountStack2Props extends cdk.StackProps, IAccountAlias, IVpc {}
 
 export class SandboxAccountStack extends cdk.Stack {
   constructor(scope: Construct, id: string, props: SandboxAccountStack2Props) {
@@ -12,5 +13,10 @@ export class SandboxAccountStack extends cdk.Stack {
     new P6CDKNamer(this, 'P6CDKNamer', {
       accountAlias: props.accountAlias,
     })
+
+    new P6LzVpc(this, 'P6LzVpc', {
+      cidr: props.cidr,
+      myIp: props.myIp,
+    })
   }
 }
diff --git a/src/stacks/shared-1.ts b/src/stacks/shared-1.ts
index 12107b9..5aa6a82 100644
--- a/src/stacks/shared-1.ts
+++ b/src/stacks/shared-1.ts
@@ -1,9 +1,9 @@
 import type { Construct } from 'constructs'
-import type { AccountAlias, ShareWithOrg } from '../types'
+import type { IAccountAlias, IShareWithOrg } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import { P6CDKNamer } from 'p6-cdk-namer'
 
-interface SharedAccountStack1Props extends cdk.StackProps, AccountAlias, ShareWithOrg {}
+interface SharedAccountStack1Props extends cdk.StackProps, IAccountAlias, IShareWithOrg {}
 
 export class SharedAccountStack1 extends cdk.Stack {
   constructor(scope: Construct, id: string, props: SharedAccountStack1Props) {
diff --git a/src/stacks/shared-2.ts b/src/stacks/shared-2.ts
index 929916e..73a463c 100644
--- a/src/stacks/shared-2.ts
+++ b/src/stacks/shared-2.ts
@@ -1,10 +1,10 @@
 import type { Construct } from 'constructs'
-import type { LogarchiveBucketArn, ShareWithOrg } from '../types'
+import type { ILogarchiveBucketArn, IShareWithOrg } from '../types'
 import * as cdk from 'aws-cdk-lib'
 import * as s3 from 'aws-cdk-lib/aws-s3'
 import { P6LzSraConfig } from '../constructs/p6-lz-sra-config'
 
-interface SharedAccountStack2Props extends cdk.StackProps, LogarchiveBucketArn, ShareWithOrg {}
+interface SharedAccountStack2Props extends cdk.StackProps, ILogarchiveBucketArn, IShareWithOrg {}
 
 export class SharedAccountStack2 extends cdk.Stack {
   constructor(scope: Construct, id: string, props: SharedAccountStack2Props) {
diff --git a/src/types.ts b/src/types.ts
index 728de35..7fe3a02 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,7 +1,8 @@
 import type * as cdk from 'aws-cdk-lib'
+import type { IIpAddresses, IPeer } from 'aws-cdk-lib/aws-ec2'
 import type * as s3 from 'aws-cdk-lib/aws-s3'
 
-export interface AccountIds {
+export interface IAccountIds {
   auditAccountId: string
   devAccountId: string
   logarchiveAccountId: string
@@ -13,18 +14,23 @@ export interface AccountIds {
   sharedAccountId: string
 }
 
-export interface AccountAlias {
+export interface IAccountAlias {
   accountAlias: string
 }
 
-export interface ShareWithOrg {
+export interface IShareWithOrg {
   principals: string[]
 }
 
-export interface LogarchiveBucket {
+export interface ILogarchiveBucket {
   centralBucket: s3.IBucket
 }
 
-export interface LogarchiveBucketArn {
+export interface ILogarchiveBucketArn {
   centralBucketArn: cdk.Arn
 }
+
+export interface IVpc {
+  cidr: IIpAddresses
+  myIp: IPeer
+}