# SystemConfiguration Constants ## Topics ### Constants [`extern CFStringRef const kCNNetworkInfoKeyBSSID;`](/documentation/SystemConfiguration/kCNNetworkInfoKeyBSSID) The key for the network’s BSSID, which is represented as a object. [`extern CFStringRef const kCNNetworkInfoKeySSID;`](/documentation/SystemConfiguration/kCNNetworkInfoKeySSID) The key for the network’s SSID, which is represented as a object. [`extern CFStringRef const kCNNetworkInfoKeySSIDData;`](/documentation/SystemConfiguration/kCNNetworkInfoKeySSIDData) The key for the network’s SSID, which is represented as a object. [`let kSCCompAnyRegex: CFString`](/documentation/SystemConfiguration/kSCCompAnyRegex-swift.var) A regular expression pattern that matches any component. [`let kSCPropNetIPSecConnectTime: CFString`](/documentation/SystemConfiguration/kSCPropNetIPSecConnectTime-swift.var) The IPSec key ConnectTime. [`let kSCPropNetIPSecRemoteAddress: CFString`](/documentation/SystemConfiguration/kSCPropNetIPSecRemoteAddress-swift.var) The IPSec key RemoteAddress. [`let kSCPropNetIPSecStatus: CFString`](/documentation/SystemConfiguration/kSCPropNetIPSecStatus-swift.var) The IPSec key Status. [`let kSCPropNetIPSecXAuthEnabled: CFString`](/documentation/SystemConfiguration/kSCPropNetIPSecXAuthEnabled-swift.var) The IPSec key XAuthEnabled. [`let kSCPropNetIPSecXAuthName: CFString`](/documentation/SystemConfiguration/kSCPropNetIPSecXAuthName-swift.var) The IPSec key XAuthName. [`let kSCPropNetIPSecXAuthPassword: CFString`](/documentation/SystemConfiguration/kSCPropNetIPSecXAuthPassword-swift.var) The IPSec key XAuthPassword. [`let kSCPropNetIPSecXAuthPasswordEncryption: CFString`](/documentation/SystemConfiguration/kSCPropNetIPSecXAuthPasswordEncryption-swift.var) The IPSec key XAuthPasswordEncryption. [`let kSCPropNetProxiesProxyAutoConfigJavaScript: CFString`](/documentation/SystemConfiguration/kSCPropNetProxiesProxyAutoConfigJavaScript-swift.var) The Proxies key ProxyAutoConfigJavaScript. [`extern CFStringRef const kSCPropUsersConsoleUserGID;`](/documentation/SystemConfiguration/kSCPropUsersConsoleUserGID-c.var) The deprecated key GID. [`extern CFStringRef const kSCPropUsersConsoleUserName;`](/documentation/SystemConfiguration/kSCPropUsersConsoleUserName-c.var) The deprecated key Name. [`extern CFStringRef const kSCPropUsersConsoleUserUID;`](/documentation/SystemConfiguration/kSCPropUsersConsoleUserUID-c.var) The deprecated key UID. [`let kSCResvInactive: CFString`](/documentation/SystemConfiguration/kSCResvInactive-swift.var) The reserved key __INACTIVE__. [`let kSCResvLink: CFString`](/documentation/SystemConfiguration/kSCResvLink-swift.var) The reserved key __LINK__. [`extern CFStringRef const kSCValNetAirPortAuthPasswordEncryptionKeychain;`](/documentation/SystemConfiguration/kSCValNetAirPortAuthPasswordEncryptionKeychain-c.var) The deprecated value Keychain. [`extern CFStringRef const kSCValNetAirPortJoinModeAutomatic;`](/documentation/SystemConfiguration/kSCValNetAirPortJoinModeAutomatic-c.var) The deprecated value Automatic. [`extern CFStringRef const kSCValNetAirPortJoinModePreferred;`](/documentation/SystemConfiguration/kSCValNetAirPortJoinModePreferred-c.var) The deprecated value Preferred. [`extern CFStringRef const kSCValNetAirPortJoinModeRanked;`](/documentation/SystemConfiguration/kSCValNetAirPortJoinModeRanked-c.var) The deprecated value Ranked. [`extern CFStringRef const kSCValNetAirPortJoinModeRecent;`](/documentation/SystemConfiguration/kSCValNetAirPortJoinModeRecent-c.var) The deprecated value Recent. [`extern CFStringRef const kSCValNetAirPortJoinModeStrongest;`](/documentation/SystemConfiguration/kSCValNetAirPortJoinModeStrongest-c.var) The deprecated value Strongest. [`let kSCValNetIPSecAuthenticationMethodCertificate: CFString`](/documentation/SystemConfiguration/kSCValNetIPSecAuthenticationMethodCertificate-swift.var) The constant value Certificate. [`let kSCValNetIPSecAuthenticationMethodHybrid: CFString`](/documentation/SystemConfiguration/kSCValNetIPSecAuthenticationMethodHybrid-swift.var) The constant value Hybrid. [`let kSCValNetIPSecAuthenticationMethodSharedSecret: CFString`](/documentation/SystemConfiguration/kSCValNetIPSecAuthenticationMethodSharedSecret-swift.var) The constant value SharedSecret. [`let kSCValNetIPSecLocalIdentifierTypeKeyID: CFString`](/documentation/SystemConfiguration/kSCValNetIPSecLocalIdentifierTypeKeyID-swift.var) The constant value KeyID. [`let kSCValNetIPSecSharedSecretEncryptionKeychain: CFString`](/documentation/SystemConfiguration/kSCValNetIPSecSharedSecretEncryptionKeychain-swift.var) The constant value Keychain. [`let kSCValNetIPSecXAuthPasswordEncryptionKeychain: CFString`](/documentation/SystemConfiguration/kSCValNetIPSecXAuthPasswordEncryptionKeychain-swift.var) The constant value Keychain. [`let kSCValNetIPSecXAuthPasswordEncryptionPrompt: CFString`](/documentation/SystemConfiguration/kSCValNetIPSecXAuthPasswordEncryptionPrompt-swift.var) The constant value Prompt. [`let kSCValNetIPv4ConfigMethodAutomatic: CFString`](/documentation/SystemConfiguration/kSCValNetIPv4ConfigMethodAutomatic-swift.var) The constant value Automatic. [`let kSCValNetIPv4ConfigMethodBOOTP: CFString`](/documentation/SystemConfiguration/kSCValNetIPv4ConfigMethodBOOTP-swift.var) The constant value BOOTP. [`let kSCValNetIPv4ConfigMethodDHCP: CFString`](/documentation/SystemConfiguration/kSCValNetIPv4ConfigMethodDHCP-swift.var) The constant value DHCP. [`let kSCValNetIPv4ConfigMethodINFORM: CFString`](/documentation/SystemConfiguration/kSCValNetIPv4ConfigMethodINFORM-swift.var) The constant value INFORM. [`let kSCValNetIPv4ConfigMethodLinkLocal: CFString`](/documentation/SystemConfiguration/kSCValNetIPv4ConfigMethodLinkLocal-swift.var) The constant value LinkLocal. [`let kSCValNetIPv4ConfigMethodManual: CFString`](/documentation/SystemConfiguration/kSCValNetIPv4ConfigMethodManual-swift.var) The constant value Manual. [`let kSCValNetIPv4ConfigMethodPPP: CFString`](/documentation/SystemConfiguration/kSCValNetIPv4ConfigMethodPPP-swift.var) The constant value PPP. [`let kSCValNetIPv6ConfigMethod6to4: CFString`](/documentation/SystemConfiguration/kSCValNetIPv6ConfigMethod6to4-swift.var) The constant value 6to4. [`let kSCValNetIPv6ConfigMethodAutomatic: CFString`](/documentation/SystemConfiguration/kSCValNetIPv6ConfigMethodAutomatic-swift.var) The constant value Automatic. [`let kSCValNetIPv6ConfigMethodLinkLocal: CFString`](/documentation/SystemConfiguration/kSCValNetIPv6ConfigMethodLinkLocal-swift.var) The constant value LinkLocal. [`let kSCValNetIPv6ConfigMethodManual: CFString`](/documentation/SystemConfiguration/kSCValNetIPv6ConfigMethodManual-swift.var) The constant value Manual. [`let kSCValNetIPv6ConfigMethodRouterAdvertisement: CFString`](/documentation/SystemConfiguration/kSCValNetIPv6ConfigMethodRouterAdvertisement-swift.var) The constant value RouterAdvertisement. [`let kSCValNetInterfaceSubTypeL2TP: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceSubTypeL2TP-swift.var) The constant value L2TP. [`let kSCValNetInterfaceSubTypePPPSerial: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceSubTypePPPSerial-swift.var) The constant value PPPSerial. [`let kSCValNetInterfaceSubTypePPPoE: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceSubTypePPPoE-swift.var) The constant value PPPoE. [`let kSCValNetInterfaceSubTypePPTP: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceSubTypePPTP-swift.var) The constant value PPTP. [`let kSCValNetInterfaceType6to4: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceType6to4-swift.var) The constant value 6to4. [`let kSCValNetInterfaceTypeEthernet: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceTypeEthernet-swift.var) The constant value Ethernet. [`let kSCValNetInterfaceTypeFireWire: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceTypeFireWire-swift.var) The constant value FireWire. [`let kSCValNetInterfaceTypeIPSec: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceTypeIPSec-swift.var) The constant value IPSec. [`let kSCValNetInterfaceTypePPP: CFString`](/documentation/SystemConfiguration/kSCValNetInterfaceTypePPP-swift.var) The constant value PPP. [`let kSCValNetL2TPIPSecSharedSecretEncryptionKeychain: CFString`](/documentation/SystemConfiguration/kSCValNetL2TPIPSecSharedSecretEncryptionKeychain-swift.var) The constant value Keychain. [`let kSCValNetL2TPTransportIP: CFString`](/documentation/SystemConfiguration/kSCValNetL2TPTransportIP-swift.var) The constant value IP. [`let kSCValNetL2TPTransportIPSec: CFString`](/documentation/SystemConfiguration/kSCValNetL2TPTransportIPSec-swift.var) The constant value IPSec. [`let kSCValNetModemDialModeIgnoreDialTone: CFString`](/documentation/SystemConfiguration/kSCValNetModemDialModeIgnoreDialTone-swift.var) The constant value IgnoreDialTone. [`let kSCValNetModemDialModeManual: CFString`](/documentation/SystemConfiguration/kSCValNetModemDialModeManual-swift.var) The constant value Manual. [`let kSCValNetModemDialModeWaitForDialTone: CFString`](/documentation/SystemConfiguration/kSCValNetModemDialModeWaitForDialTone-swift.var) The constant value WaitForDialTone. [`let kSCValNetPPPAuthPasswordEncryptionKeychain: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthPasswordEncryptionKeychain-swift.var) The constant value Keychain. [`let kSCValNetPPPAuthPasswordEncryptionToken: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthPasswordEncryptionToken-swift.var) The constant value Token. [`let kSCValNetPPPAuthPromptAfter: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthPromptAfter-swift.var) The constant value After. [`let kSCValNetPPPAuthPromptBefore: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthPromptBefore-swift.var) The constant value Before. [`let kSCValNetPPPAuthProtocolCHAP: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthProtocolCHAP-swift.var) The constant value CHAP. [`let kSCValNetPPPAuthProtocolEAP: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthProtocolEAP-swift.var) The constant value EAP. [`let kSCValNetPPPAuthProtocolMSCHAP1: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthProtocolMSCHAP1-swift.var) The constant value MSCHAP1. [`let kSCValNetPPPAuthProtocolMSCHAP2: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthProtocolMSCHAP2-swift.var) The constant value MSCHAP2. [`let kSCValNetPPPAuthProtocolPAP: CFString`](/documentation/SystemConfiguration/kSCValNetPPPAuthProtocolPAP-swift.var) The constant value PAP. [`let kSCValNetSMBNetBIOSNodeTypeBroadcast: CFString`](/documentation/SystemConfiguration/kSCValNetSMBNetBIOSNodeTypeBroadcast-swift.var) The constant value Broadcast. [`let kSCValNetSMBNetBIOSNodeTypeHybrid: CFString`](/documentation/SystemConfiguration/kSCValNetSMBNetBIOSNodeTypeHybrid-swift.var) The constant value Hybrid. [`let kSCValNetSMBNetBIOSNodeTypeMixed: CFString`](/documentation/SystemConfiguration/kSCValNetSMBNetBIOSNodeTypeMixed-swift.var) The constant value Mixed. [`let kSCValNetSMBNetBIOSNodeTypePeer: CFString`](/documentation/SystemConfiguration/kSCValNetSMBNetBIOSNodeTypePeer-swift.var) The constant value Peer. [`let kSCPropNetProxiesFTPUser: CFString`](/documentation/SystemConfiguration/kSCPropNetProxiesFTPUser-swift.var) [`let kSCPropNetProxiesGopherUser: CFString`](/documentation/SystemConfiguration/kSCPropNetProxiesGopherUser-swift.var) [`let kSCPropNetProxiesHTTPSUser: CFString`](/documentation/SystemConfiguration/kSCPropNetProxiesHTTPSUser-swift.var) [`let kSCPropNetProxiesHTTPUser: CFString`](/documentation/SystemConfiguration/kSCPropNetProxiesHTTPUser-swift.var) [`let kSCPropNetProxiesRTSPUser: CFString`](/documentation/SystemConfiguration/kSCPropNetProxiesRTSPUser-swift.var) [`let kSCPropNetProxiesSOCKSUser: CFString`](/documentation/SystemConfiguration/kSCPropNetProxiesSOCKSUser-swift.var) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)