Internet Protocol Security IPsec is a protocol suite for securing Internet Protocol IP communications ... IP packets IP packet of a communication session. IPsec also includes protocols for establishing mutual ... cryptographic key s to be used during the session. IPsec is an end to end security scheme operating ..., since day one, applications did not need to be specifically designed to use IPsec. Hence, IPsec ... of SSL based Virtual private network VPN revolution with implementations like OpenVPN . IPsec ... by the Secure Data Network System project of the National Security Agency NSA , IPsec AH is derived ... SNMP . IPsec is officially specified by the Internet Engineering Task Force IETF in a series of Request ... of the protocol name to be IPsec . ref cite web url http tools.ietf.org html rfc4301 page 4 title ... date December 2005 quote The spelling IPsec is preferred and used throughout this and all related IPsec standards. All other capitalizations of IPsec ... are deprecated. page 4 ref IPstack Security architecture The IPsec suite is an open standard . IPsec uses the following Protocol computing protocol ... for IPsec publisher Internet Engineering Task Force IETF last Hoffman first P. year 2005 month ... J. ref ref name RFC 4025 cite rfc title A Method for Storing IPsec Keying Material in DNS publisher ... Authentication Header Authentication Header AH is a member of the IPsec protocol suite. AH guarantees ... Security Payload Encapsulating Security Payload ESP is a member of the IPsec protocol suite. In IPsec it provides origin Information security Authenticity authenticity , integrity , and confidentiality ... in theory and practice The case of encryption in IPsec booktitle Eurocrypt 2006, Lecture Notes in Computer ... ref ref cite conference title Attacking the IPsec Standards in Encryption only Configurations booktitle ... packet, IPsec uses the Security Parameter Index SPI , an index to the security association ..., where IPsec gathers decryption and verification keys from the security association database. For multicast ... more details
The Security Parameter Index SPI is an identification tag added to the header while using IPsec for tunneling the IP traffic. This tag helps the kernel discern between two traffic streams where different encryption rules and algorithms may be in use. The SPI as per RFC 2401 is an essential part of an IPsec Security Association SA because it enables the receiving system to select the SA under which a received packet will be processed. An SPI has only local significance, since it is defined by the creator of the SA an SPI is generally viewed as an opaque bit string. However, the creator of an SA may interpret the bits in an SPI to facilitate local processing. This works like port numbers in TCP and UDP connections. What it means is that there could be different SAs used to provide security to one connection. An SA could therefore act as a set of rules. Carried in IPsec Encapsulating Security Payload Encapsulating Security Payload ESP header or IPsec Authentication Header Authentication Header AH , its length is 32 bits. Category Internet protocols Compu stub ... more details
A network extrusion is a kind of VPN tunnel where a subnet or host is moved to another location, without any router advertisement changes. Such a subnet is routed to normally, but then send via a VPN tunnel to appear anywhere else on the internet. This type of VPN connection is often used for Adding IPv4 public address space to a location that has only 1 public IP address, such as a consumer internet connection Assigning a static IP address to a roaming laptop to ensure it is always reachable on 1 static IP address. This is often done with IPsec and L2TP or XAUTH In IPsec Openswan IPv4 configuration, this corresponds to a policy on the client system like conn mylaptop extruded right 192.1.0.1 rightsubnet 0.0.0.0 0 left defaultroute leftsubnet 192.0.0.1 32 leftsourceip 192.0.0.1 When this IPsec connecion is active, the default IP address for outgoing connections is 192.0.0.1. Since this is covered by the IPsec tunnel, the packet will be encrypted and send to the remote IPsec gateway at 192.1.0.1. It will get decrypted and then sent to its original destination. Response packets follow a similar path in reverse. When using leftsubnet 192.0.0.0 24, one could even run a small network with the laptop as default gateway and provide public IP addresses to many computers, all appearing to live at the remote site. Generally, IPsec VPNs are used in many cases to route private networks rather than public ones, so while this configuration is not implausible, it is unusual for VPN administrators. Many remote access situations run as network extrusions so that a corporate firewall can inspect the traffic that travels to and from the laptop computer. This technique can also be used to tunnel in IPv6 space into networks where only IPv4 space is available or vice versa These tunnels are invisible to traceroute because the IPsec tunnel appears as a single additional hop, just like a subnet. Category Virtual private networks ... more details
http ipsec tools.sourceforge.net IPsec Tools , a port of KAME s IPsec utilities to the Linux 2.6 IPsec implementation Category Internet protocols Category BSD software Category Free software ... more details
NAT T NAT traversal in the Internet Key Exchange IKE is a method of enabling IPsec protected IP datagrams to pass through network address translation NAT . RFC 3947 defines the negotiation during the Internet key exchange IKE phase and RFC 3948 defines the UDP encapsulation. An IP packet is modified while passing through a network address translator device in a manner that is incompatible with IPsec Internet Protocol Security IPsec . NAT T protects the original IPsec encoded packet by encapsulation networking encapsulating it with another layer of UDP and IP headers. Most major networking vendors support NAT T for IKEv1 in their devices. In Microsoft Windows XP with Service Pack 2 the feature can be enabled ref cite web title MSKB818043 L2TP IPsec NAT T update for Windows XP and Windows 2000 url http support.microsoft.com kb 818043 en us publisher Microsoft Knowledgebase ref but is disabled in default settings when the VPN server itself is behind a network address translator because of security issues. Enabling it needs a simple registry key change. ref cite web title MSKB885348 IPSec NAT T is not recommended for Windows Server 2003 computers that are behind network address translators url http support.microsoft.com kb 885348 en us publisher Microsoft Knowledgebase ref References cite web title RFC 3715 IPsec Network Address Translation NAT Compatibility Requirements url http tools.ietf.org html rfc3715 publisher Network Working Group of the IETF date March 2004 references Category Cryptographic protocols Category Internet protocols Category Tunneling protocols ar es NAT T fr NAT T ja NAT T ... more details
about an Internet protocol Unreferenced date May 2007 The cookie exchange in IPsec comes under the Oakley protocol , which is a protocol of key management. The cookie exchange requires that each side send a pseudorandom number, the cookie, in the initial message, which the other side acknowledges. This acknowledgement must be repeated in the first message of the Diffie Hellman key exchange . If the source address was forged, the opponent gets no answer. Thus, an opponent can only force a user to generate acknowledgements and not to perform the Diffie Hellman calculation. Note that cookies in the sense of IPsec are unrelated to HTTP cookie s used by web browsers. The recommended method for creating the cookie is to perform a fast hash eg. MD5 over the Internet Protocol IP source and destination addresses, the UDP source and destination ports, and a locally generated secret value. Category Internet protocols Don t put this in category HTTP. This article talks about cookies in the sense of the IPsec protocol. That has nothing to do with HTTP cookies. ... more details
IKE may refer to The IKE Group , a research group at the Department of Business Studies, Aalborg University, Denmark Ikerasak Heliport LID airport code , a heliport in Ikerasak, Qaasuitsup, Greenland Internet Key Exchange , the protocol used to set up a security association SA in the IPsec protocol suite The ISO 639 language code for Eastern Canadian Inuktitut See also Ike disambiguation Disambig ... more details
SADB may refer to Sadbh , the Sidhe mother of Oisin Sadb ingen Chuinn , an Irish queen A Security Association Database, used in IPsec disambig Short pages monitor This long comment was added to the page to prevent it being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Longcomment. Please do not remove the monitor template without removing the comment as well. ... more details
other uses of IAPM Integrity Aware Parallelizable Mode IAPM is a block cipher modes of operation mode of operation for cryptographic block cipher s. As its name implies, it allows for a parallel mode of operation for very high throughput. Encryption and authentication IAPM was the first cipher mode created to provide both authentication and privacy in a single pass. Citation needed date January 2011 Previously, two passes would be required to achieve both benefits for example the first pass using DES in CBC mode and the second pass authenticating with HMAC MD5. IAPM allows for a single pass achieving both authentication and privacy. OCB mode also provides authentication and privacy in a single pass, and has largely supplanted IAPM for single pass authenticated encryption. IAPM mode was designed by Charanjit Jutla . The OCB inventor, Phillip Rogaway , gives credit to Jutla for inventing the single pass technique. ref http www.cs.ucdavis.edu rogaway ocb ocb faq.htm jutla Rogaway s OCB FAQ crediting Jutla ref See also OCB mode Notes Reflist References http tools.ietf.org id draft jutla ietf ipsec esp iapm 00.txt C.S. Jutla A Parallelizable Authenticated Encryption Algorithm for IPsec http eprint.iacr.org 2000 039 Charanjit S. Jutla Encryption Modes with Almost Free Message Integrity, ACR Report 2000 39, 1 August 2000 External links http eprint.iacr.org 2000 039 Jutla s IAPM specification IACR 2000 39 http tools.ietf.org id draft jutla ietf ipsec esp iapm 00.txt Jutla s IAPM IPSec draft Cryptography navbox block hash Category Block cipher modes of operation Category Authenticated encryption schemes ... more details
ipsectrace is a software tool designed by Wayne Schroeder to help profile ipsec connections in a packet capture PCP file. The program uses a command line interface to point at a PCP capture and informs the user about what is going on. It is somewhat inspired by tcptrace , which uses the same input of PCP files. ref name tcptrace cite web title tcptrace url http www.tcptrace.org accessdate 9 May 2011 ref Ipsectrace is only available for the Linux operating system . It is coded in C and is licensed under the GPL , effectively allowing anyone to modify and redistribute it. ref name GPL cite web title Frequently Asked Questions about the GNU Licenses url http www.gnu.org licenses gpl faq.html WhyDoesTheGPLPermitUsersToPublishTheirModifiedVersions publisher GNU accessdate 9 May 2011 ref Although its main purpose is to monitor ipsec traffic, ipsectrace can be used to crack extra layers of security brought about by VPN implementations of security such as ipsec and Secure Shell SSH ref name ipsec cite book last Dean first Tamara title Network guide to networks year 2009 publisher Cengage Course Technology location Boston, Mass. isbn 978 1 423 90245 4 pages 575 615 edition 5th ed. ref , whereas programs such as Anger, Deceit, and Ettercap can be used to infiltrate PPTP security. ref name Beaver cite book last Beaver first Kevin title Hacking wireless networks for dummies find and fix network loopholes before invaders exploit them year 2005 publisher Wiley location Hoboken, NJ isbn 0764597302 url http books.google.com books?id i0Edxmcly1oC&pg PA295&lpg PA295&dq deceit pptp&source bl&ots nY2yJjStHU&sig mYiCPZWaSzgY6L9e4m6CzZFP Y8 v onepage&q deceit 20pptp&f false edition 1st ed. coauthors Akin, Peter T. Davis. Foreword by Devin K. ref References reflist External links ipsectrace download at http ostatic.com ipsectrace OStatic Category Network analyzers Category Free network management software unix stub ... more details
Infobox software name Openswan logo screenshot caption author developer released latest release version 2.6.38 latest release date release date 2012 03 23 operating system Linux , FreeBSD platform language status genre IPsec license GNU General Public License website http www.openswan.org openswan.org Openswan is a complete IPsec implementation for Linux 2.0, 2.2, 2.4 and 2.6 kernels. Openswan began as a Fork software development fork of the now defunct FreeS WAN project, and continues to be released freely under the GNU General Public License . Unlike the FreeS WAN project, it is not developed exclusively for the Linux operating system. External links Portal box Free software Cryptography http www.openswan.org Openswan website http wiki.openswan.org Old Openswan wiki http bugs.openswan.org projects openswan Openswan bugtracker and new wiki VPN Category Virtual private networks Category Software forks Category Free security software Category Cryptographic protocols linux stub ja Openswan sq Konfigurimi i VPN n Linux ... more details
Refimprove date October 2006 Simple Key Management for Internet Protocol or SKIP was a protocol developed circa 1995 by the IETF Security Working Group for the sharing of encryption key s. SKIP and Photuris protocol Photuris were evaluated as key exchange mechanisms for IPsec before the adoption of Internet Key Exchange IKE in 1998. ref cite article title Configuring IPsec IKE on Solaris last1 Dubrawsky first1 Ido date 2002 08 15 publisher SecurityFocus accessdate 2009 12 02 url http www.securityfocus.com infocus 1616 ref Skip is hybrid Key distribution protocol Simple Key Management for Internet Protocols SKIP is similar to SSL, except that it establishes a long term key once, and then requires no prior communication in order to establish or exchange keys on a session by session basis. Therefore, no connection setup overhead exists and new keys values are not continually generated. References reflist DEFAULTSORT Simple Key Management For Internet Protocol Category Key management Category Article Feedback 5 Crypto stub ... more details
Internet Key Exchange IKE or IKEv2 is the protocol used to set up a security association SA in the IPsec .... Architecture Most IPsec implementations consist of an IKE Daemon computer software daemon that runs in user space and an IPsec stack in the Kernel computer science kernel that processes the actual ... information, such as the IPsec endpoint addresses, keys and certificates, as required. Kernel ... SA on both sides. The negotiated key material is then given to the IPsec stack. For instance ... and ports that are to be protected, as well as what type of IPsec tunnel has been created. The IPsec ... in Phase 1 to negotiate Security Associations on behalf of other services like IPsec . The negotiation ... mobility and multihoming for it and ESP. By use of this extension IKEv2 and IPsec can be used ... IKEv2 uses cryptographic mechanisms to protect its packets that are very similar to what IPsec Encapsulating Security Payload ESP uses to protect the IPsec packets. This led to simpler implementations ... include IKE session resumption the ability to resume a failed IKE IPsec session after a failure ... . IPsec traffic visibility special tagging of ESP packets that are authenticated but not encrypted ... 6290 . High availability extensions improving IKE IPsec level protocol synchronization between a cluster of IPsec endpoints and a peer, to reduce the probability of dropped connections after a failover event RFC 6311 . Implementations IKE is supported as part of the IPsec implementation in Windows ... en us library cc784994 WS.10 .aspx Internet Key Exchange Internet Protocol Security IPsec ... www.securityfocus.com infocus 1519 Using IPSec in Windows 2000 and XP, Part 1 ref Microsoft Windows ... Reconnect feature also known as Agile VPN . There are several open source implementations of IPsec ... daemon called pluto , which can configure i.e., establish SAs to the KLIPS or NETKEY kernel based IPsec stacks. NETKEY is the Linux kernel Linux 2.6 kernel s native IPsec implementation. The Berkeley ... more details
by most small NAT gateways. NAT T is commonly used by IPsec virtual private network clients in order .... NAT traversal and IPsec technical section NAT traversal and IPsec date March 2011 In order for IPsec ... IP protocol number 51 or, in case of NAT T IKE UDP port 500 IPsec NAT T UDP port 4500 Often this is accomplished on home routers by enabling IPsec Passthrough . In Windows XP, NAT T is enabled by default ... kb 885348 en us title IPSec NAT T is not recommended for Windows Server 2003 computers that are behind network address translators publisher Microsoft knowledge base 885348 ref . IPsec NAT T patches are also available for Windows 2000, Windows NT and Windows 98. One usage of NAT T and IPsec ... mode IPsec for NAT Domains RFC 2993 Architectural Implications of NAT RFC 3022 Traditional IP Network ... IPsec Network Address Translation NAT Compatibility RFC 3947 Negotiation of NAT Traversal in the IKE ... more details
Advert date December 2007 Hifn is a semiconductor manufacturer founded in 1996 as a Corporate spin off spin off from Stac Electronics . The company is headquartered in Los Gatos , California , and has offices in North America, Europe and Asia. It is active in the market of security processors. Following the initial public offering in 1998, the company s stock was formerly traded on the NASDAQ under the symbol http quotes.nasdaq.com asp SummaryQuote.asp?symbol HIFN&selected HIFN HIFN Hifn holds the patents for the Lempel Ziv Stac LZS and Microsoft Point to Point Compression MPPC compression algorithm s. Hifn was the first company to offer a processor with integrated encryption and compression in 1998, and followed this in 1999 with the world s fastest security processor for VPN s. In 2000, Hifn invented an Intelligent Packet Processor a security co processor capable of not just performing raw algorithm processing, but of modifying the complete packet, allowing their processors to transform an Internet Protocol IP packet into an IPSec packet in a single pass in the security processor with only the Policy and IPSec Stack being required on the host CPU. They were the first to offer a security processor featuring the new Advanced Encryption Standard AES algorithm in 2001. In 2004 they followed on from their Packet Processor with a complete IPSec protocol processor an Inline processor capable of performing the entire IPSec and Internet Key Exchange IKE processing with no CPU intervention required. They also adapted this processor for the Storage area network SAN market, for applications such as iSCSI . Hifn also offers security processors for Secure VoIP and WiMax applications, and its technology innovator, offering technologies for application aware flow classifiers and search engines. In earlier 2004, Hifn acquired part of IBM Network Processor assets in addition to PowerNP s intellectual property license. Since then Hifn became the sole vendor of PowerNP IBM code Raini ... more details
Multiple issues primary sources October 2011 orphan February 2009 notability October 2011 Dead Peer Detection DPD is a method of detecting a dead Internet Key Exchange IKE peer. The method uses IPsec traffic patterns to minimize the number of messages required to confirm the availability of a peer. DPD is used to reclaim the lost resources in case a peer is found dead and it is also used to perform IKE peer failover. References http www.ietf.org rfc rfc3706.txt RFC 3706 A Traffic Based Method of Detecting Dead Internet Key Exchange IKE Peers Category Cryptographic protocols crypto stub compu network stub pl Dead Peer Detection ... more details
multiple issues orphan February 2009 unreferenced December 2007 notability December 2007 Quantum Key Distribution Networks are future networks that are capable to provide Quantum key distribution QKD in passive optical networks. These networks will be integrated within the nowadays classical networks with the minor impact in the optical infrastructures. The target is to combine classical channels with quantum channels in order to use the quantum channels to deliver cryptographic keys and use them to encrypt data payload inside IPsec or in any other stack protocol. Nowadays there are projects to start deploying these quantum networks in GPON by research enterprises like Telefonica Telefonica I D and some others companies. Category Network architecture Category Quantum cryptography telecomm stub ... more details
. IPsec is often used to secure L2TP packets by providing confidentiality, authentication and integrity. The combination of these two protocols is generally known as L2TP IPsec discussed below ... a tunnel and session in voluntary tunneling method are Image l2tp pkt exchg.PNG L2TP IPsec ... with IPsec . This is referred to as L2TP IPsec, and is standardized in IETF RFC 3193. The process of setting up an L2TP IPsec VPN is as follows Negotiation of IPsec security association SA , typically ... other keying methods exist. Establishment of IPsec Encapsulating Security Payload Encapsulating ... of parameters takes place over the SA s secure channel, within the IPsec encryption. L2TP uses UDP port 1701. When the process is complete, L2TP packets between the endpoints are encapsulated by IPsec. Since the L2TP packet itself is wrapped and hidden within the IPsec packet, no information about ... until after IPsec data has been decrypted and stripped, which only takes place at the endpoints. A potential point of confusion in L2TP IPsec is the use of the terms tunnel and secure channel . The term ... IPsec, first IPsec provides a secure channel, then L2TP provides a tunnel. Windows implementation ... IPsec easier, both described in sections that follow below an Microsoft Management Console MMC snap ..., and unfortunately, there is very little documentation about both netsh advfirewall and the IPsec ... address of the IPsec server changes, all clients will have to be informed of this new IP address which ... http www.kitz.co.uk adsl equip2.htm example of reseller ISPs using L2TP . See also IPsec Layer 2 Forwarding ... eng vpndetails Linux L2TP IPsec server , http mpd.sourceforge.net FreeBSD multi link ... Microsoft L2TP IPsec VPN Client for Windows 98 Windows Me Windows NT 4.0 Apple built in client ... L2TP over Frame Relay RFC 3145 L2TP Disconnect Cause Information RFC 3193 Securing L2TP using IPsec ... as an L2TP IPsec VPN client http alivevpn.com l2tp vpn account settings Configuring L2TP VPN in Windows ... more details
Primary sources date April 2008 Infobox software name FreeS WAN logo screenshot caption author John Gilmore activist John Gilmore Founder developer None released latest release version 2.06 latest release date 22 April 2004 latest preview version latest preview date operating system Linux platform language status genre IPsec & Internet key exchange IKE license Mostly GNU GPL, see LICENSE file website http www.freeswan.org www.freeswan.org FreeS WAN , for Free S ecure W ide A rea N etworking, was a free software project, which implemented a reference version of the IPsec network security layer for Linux and other Unix like operating systems. The project goal of ubiquitous opportunistic encryption of Internet traffic was not realized, although it did contribute to general Internet encryption. The project was founded by John Gilmore activist John Gilmore , and administered for most of its duration by Hugh Daniel. Technical lead for the project was Henry Spencer . The final FreeS WAN version 2.06 was released on 22 April 2004. The earlier version 2.04 was Fork software development forked to form two projects, Openswan and strongSwan . External links Portal box Free software Cryptography http www.freeswan.org Project website http www.freeswan.org freeswan trees freeswan 2.06 doc Documentation Interlang DEFAULTSORT Frees Wan Categories Category Free security software Category History of software Network software stub es FreeS Wan ja FreeS WAN ... more details
Back to My Mac is a feature introduced with Mac OS X 10.5 Leopard that uses Wide Area Bonjour software Bonjour to securely discover services across the Internet and automatically configure ad hoc, on demand, point to point encrypted connections between computers using IPSec . It requires users to have iCloud set up, as well as an Apple ID . Due to its generality, Back to My Mac can work for many Bonjour software Bonjour enabled services, not just Screen Sharing similar to Apple Remote Desktop and File Sharing. Users must have a router that supports either Universal Plug and Play UPNP Universal Plug & Play or NAT PMP NAT Port Mapping Protocol with either of those features enabled in their connected router. It uses UDP port 4500 for point to point IPSec connections which may be mapped to different UDP ports on the public side of a NAT router . ref Glenn Fleishman, http www.macworld.com 2007 11 features backtomymac side index.php Back to My Mac Apple s Internet mashup , MacWorld.com , 7 November 2007 ref ref cite web title RFC 6281 Understanding Apple s Back to My Mac BTMM Service url http tools.ietf.org html rfc6281 date June 2011 ref As of October 12, 2011, Apple has included Back to My Mac in its iCloud service rather than the previously used MobileMe , thus making it free to use. ref Transition from MobileMe to iCloud, http www.apple.com mobileme transition.html , Apple.com ,12 October 2011 ref Uses Back to My Mac can be used to edit and transfer files from one Mac to another. In one instance an Apple Store employee used this technology to capture the image of a person who stole her MacBook using the built in iSight webcam. ref http www.roughlydrafted.com 2008 04 15 using back to my mac to catch a thief Using Back to My Mac to Catch a Thief , RoughlyDrafted , 15 April 2008 ref References reflist Mac software stub Category Mac OS X software ... more details
AuthIP is a Microsoft Proprietary protocol proprietary extension of the Internet key exchange IKE cryptographic protocol . AuthIP is supported in Windows Vista and later on the client and Windows Server 2008 and later on the server. AuthIP adds a second authentication to the standard IKE authentication which, according to Microsoft, increases security and deployability of IPsec VPN s. AuthIP adds support for user based authentication by using Kerberos v5 or SSL certificates. AuthIP is not compatible with IKEv2 , an IETF standard with similar characteristics however Windows 7 and Windows Server 2008 R2 also support IKEv2. See also Secure Socket Tunneling Protocol SSTP External links http technet.microsoft.com en us library bb878097.aspx AuthIP in Windows Vista The Cable Guy column at the Microsoft website http www.microsoft.com technet technetmag issues 2007 10 CableGuy default.aspx The Authenticated Internet Protocol The Cable Guy column at the Microsoft website Category Cryptographic protocols Category Windows Server ... more details
wiktionary kink A twist or bend in something such as rope , cable , hair or Inverse gamma distribution IG curve Kink or KINK can refer to Kink sexual , a colloquial term for non normative sexual behavior KinK , a Canadian documentary television series profiling some of the more unusual edges of human sexuality KINK FM 101.9 , a radio station in Portland, Oregon, in the United States Kink FM , a radio station in the Netherlands The Kinks , a British rock band A colloquial term for a trigger point Kinks are solutions to the Sine Gordon equation Sun kink , a buckling of railway tracks caused by high temperature. Kink.com , an internet pornography company focusing on BDSM and related Sexual Fetishism fetishes Kerberized Internet Negotiation of Keys , a Kerberos protocol Kerberos based protocol used in IPSec similar to Internet Key Exchange Tarmo Kink born 1985 , Estonian football player disambig de Kink pt Kink sv Kink ... more details
payload , SRTP encrypts the whole RTP payload, and IPsec encrypts packets at network level. ref name ... RTP Secure Real time Transport Protocol SRTP IPsec Internet Streaming Media Alliance ISMA Notes reflist ... more details
s network, the Security Gateway establishes IPsec tunnels with HNBs using IKEv2 signaling for IPsec tunnel management. IPsec tunnels are responsible for delivering all voice, messaging and packet ... more details
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