Latency VPN

Similar Questions

• VPN increases the latency - workaround - tunnel vpn - different ISP adds milliseconds

  Experts,

  I came across a very interesting question.  I connect 3 offices via point to point wireless antena.  There is a main central situation and 2 remote offices.

  Before all the location were running under the same provider of point to point wireless antenna.  Each antenna works at 10 Mbps.

  Central location Antenna1 - remote peer 1 (vpn and latency works perfectly)

  Location central antenna 2 - 2 remote peer (latency increases vpn but ip to ip works fine).

  For the central location 2, these are the tests that I ran

  Central location Antena 2

  Router on the inside: 10.10.10.1

  Router to the outside: 200.1.1.1

  Remote peer 2:

  Router on the inside: 10.9.9.1

  Router to the outside: 195.2.2.2

  Success rate is 100 per cent (5/5), round-trip min/avg/max = 432/553/656 ms (when I ping via the VPN to 10.10.10.1 to 10.9.9.1)

  Success rate is 100 percent (5/5), round-trip min/avg/max = ms 18/12/28 (that's when I regular internet ping from 200.1.1.1 to 195.2.2.2.2)

  What could cause this huge delay?  I tested several routers on Antenna2 and this is the same result.  Delay only happens when I have add VPN.

  Thank you for any light...

  Randall

  Hi Randal

  Certainly, there is a work around. It is by lowering the ip mtu before his hitting the tunnel. "The way to counter this is to set the mtu on the tunnel interface ip to 1400bytes (if you with GRE Tunnel IPsec) you can lower it more as well.if you want well.you can combine it with the ip tcp adjust-mss. Essentially, we let the size of the package get any more big as 1500bytes altogether so that the jumps between the two have to do fragmenatation. The delay is caused by the fragmentation between the two

  The link below should guide you in the right direction.

  http://www.Cisco.com/en/us/Tech/tk827/tk369/technologies_white_paper09186a00800d6979.shtml

  HTH

  Kishore

• GET VPN question: Key Server and latency review

  Hi, imagine that, for reasons of redundancy, I want to configure a keyserver in California and another key server in Hong Kong.

  Is there a problem of latency to be aware when you deploy key servers far from each other?

  http://www.Cisco.com/en/us/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps7180/deployment_guide_c07_554713.html

  I don't think so. 2 key servers have a tunnel secured between them, so if there is a problem you should see with this tunnel. The key servers don't provide sensitive information of latency that I saw.

• RV082 and fast VPN

  I tried to configure my router RV082 all OE quick VPN access. I bought this router a few years back with the intention of setting up a VPN. Now that I need to do, this product is no longer supported.

  In any case, down to the problem - I can not past the first problem. I get an error that says: "Unable to connect" and it lists 5 problems:

  1. wrong password

  2. no IP address for the network card

  3. incorrect server address

  4. you may need to disable your windows firewall

  5. conflicts of IP addresses with the subnet of the remote VPN server

  I just tackle these questions

  1. I am using the correct password

  2. I have an IP address, I can get on the internet

  3 server address is correct

  4. do not use the windows firewall (I have even disabled my firewall, netgear home but no help)

  5. work 192.168.0.x subnet, host is 192.168.1.x, different subnets.

  When I'm at home, I can connect to the remote router configuration page, but I can't get anywhere with fast VPN. I tried this on 3 different networks, all give me the same answer. I am inclined to believe that this must mean I'm incorrectly configured on the router, but I followed all the steps as described by linksys. I even upgraded to the latest firmware and the latest version of quickVPN all to nothing does not.

  I use access rules to guide the SQL traffic to one of our servers, that is the question? Any ideas?

  Thank you for your response. You are right it is not access rules, but it is the configuration of the router. In the tab "Firewall", you need to enable HTTPS. There was nowhere in the product manual update, I downloaded, but it was on the info for the Firewall page tab. The only reason why that I disabled it HTTPS is that my remote management session with the previous firmware would sometimes close unexpectedly under HTTPS. In any case, connection works fine now.

  So my next question has to do with the speed. This is the first time I've gotten a quick VPN to work. When I connect to my ping time to a server is 60-80ms. At work, it is 1 ms. It is common to have a time big lag? Unfortunately at this slow speed this VPN may not be such a solution. I used a PPTP VPN in the past and latency are not too bad, but of course there is no encryption that is important here. Any thoughts on the speed?

• Latency Wireless Windows 7 64 bit

  I was struggling with a strange problem with openvpn on Windows 7 64 bit wireless.  Performance is very slow and my ping is very high on the openvpn from Windows XP Win7 wired connections and wireless connection.

  This seems to be a problem with the Intel WiFi Link 1000 BGN wireless card.  No update firmware is available from Lenovo or Intel for the card.

  Average ping latency is 30ms WinXP vpn wired as well as Win7 wired and wireless.  But going to 130ms + Win7, connection Wi - Fi!  This translates into a remote session which is like working in molasses.  Walk through code in Visual Studio on a remote Windows 7 machine when computer on a wireless connection so much lag time, it becomes unusable.  To connect remotely on a wired ethernet or Wireless N WinXP is so sensitive that sitting in front of the remote computer.

  Seems that my MTU is optimal for my internet connection.  I tested and found that 1480 is the minimum size package where I can ping and return a response "packet needs to be fragmented but DF set.»  So I leave my MTU to 1500 on cable and wireless on Win7 machine.

  So far I have (I think) excluded the following:

  Firewall - the two windows and to the router - have turned both without effect

  Antivirus - no change with it disabled

  Configuration of the router - put the laptop in the DMZ and no change

  MTU - tested 1500 as optimum

  ThinkPad drivers and BIOS - all the latest

  Everyone meet problems with this Intel 1000 wireless card?

  Thank you

  Jeff

  ThinkPad Edge 14 with Intel 1000 BGN NIC wireless

  I had a real problem with performance on several ThinkPads with Win7 wireless until I realized there is a new (or perhaps changed implementation) setting in Win7 it affecting power.

  If you go to control panel-> Power Options, then click on "Change plan settings" for your current power management.

  On the next screen click "change power avancΘs."

  In the next screen expand 'Wireless adapter settings', then 'Power Saving Mode '.

  Make sure that it is set for maximum Performance.

  You do not know if this will help your particular problem but hope.

• Slow flow on MPLS VPN WAN

  Anyone have any ideas why a portion of the traffic is slow as it passes through a VPN MPLS WAN. My FTP copies are fast but copy all windows or windows file transfers are slow. Copies of windows are about three times slower as the FTP transfers. Can be optimized on routers or switches?

  Hello

  Thus, all transfers are done with CIFS are slow and other then CIFS are ok?

  All transfers are between XP/7 and servers (before 2008)?

  Please take a look at http://bit.ly/rkh9IM

  CIFS (or SMB) prior to the 2008 version is slow by definition as it can not cope with very good latency. Other protocols such as HTTP and FTP run much smoother.

  When you run Server 2008 (or better) combination with Windows Vista (or better) should solve some of your problems as it can using SMBv2.

  What actual speed is your order on the MPLS and what is the maximum transfer reached between server and workstation?

  Best regards, G.

• slow when they are connected via anyconnect VPN, ASA OS 9.0

  Hi guys

  My users are complaining that they are experience slowness when they are connected via vpn anyconnect for ASA os 9.x, 5 Mb files tikes 15 mts rough with them, even if these users also have a connection broadband on their place

  any guy insight

  Thank you

  Hi Ibrahim.

  My first suggestion to you is to follow the recommendations of Cisco, associated with latency problems.

  hostname (config) #-group attributes policy
  hostname (config-Group-Policy) #webvpn
  hostname (config-group-webvpn) select #svc dtls
  hostname (config-group-webvpn) #svc df-bit-ignore enable
  hostname (config-group-webvpn) #svc routing-filtering-ignore enable
  hostname (config-group-webvpn) mtu #svc 1200
  hostname (config-group-webvpn) #svc compression no

  (a more recent version, you can use the command "anyconnect" instead of "svc")

  If after this the problem persists please let me know when is the right time to reproduce the problem and collect the balls, debugs and catches. I also need the current configuration of the SAA (see technology in a txt file)

  Kind regards

  Aditya

  Please evaluate the useful messages.

• Client VPN vs VPN 3005 concentrator using the Dial - up Internet GPRS connection

  Hello!

  I'm in trouble by using the GPRS Internet connection. I installed a VPN Client to connect to our VPN 3005 and it works fine but only using a V.90 Internet Dial-up regular connection. When I use GPRS I have access to the Internet, my VPN Client to connect successfully to the VPN3005, but I get no access to the Remote LAN (not even the ping test!). Can the overhead of 3DES cause something to do with this topic?

  Kind regards

  Russ

  I also activated the udp encapsulation mode, however I notice that the success rate for the vpn full implementation of IKE (complete Exchange of keys and connection) is only abt 50% of no. some trys. I wonder if you have such an experience... Not sure it's because of the latency in GPRS.

• site to site vpn with ASA 5500 series SSL?

  We have routers DLink DIR - 130 5505 s ASA and PIXen, all work well with our PIX 515E, we need to replace.

  We also have Internet satellite in two places. High latency makes IPsec VPN to DLinks on these very slow sites.

  We were informed by HughesNet that a SSL VPN will mitigate some of the problems of latency.

  However, we cannot use a VPN client for the biometric timeclocks in these places, the clocks need static IP addresses and are more or less "dumb terminals".

  The machine of series 5000 ASA VPN site to site similar to OpenVPN or only the most comment client-server type SSL VPN connections?

  Thank you, Tom

  Hi Thomas,

  The SSL VPN on ASAs feature is a client/server relationship where the remote computer can connect without client (browser) or clientbased (AnyConnect) to the ASA.

  Federico.

• Quality of VoIP BOUNCING over AnyConnect VPN problems

  Hello:

  I'm in the middle of the conversion of our environment of VPN for remote access of the former client VPN Cisco AnyConnect (ver. 3.1.01065) VPN's IPSec. I have a number of beta-testers on the new AnyConnect VPN environment, and we have quality problems of intermittent VoIP (IP Communicator 8.5.3 on remote laptops) with the HQ VPN. While I realize that we miss the calls over the Internet, which is a network of 'better' and can not control the Inernet QoS, the special thing is the VoIP call on the former that ipsec VPN seems to work very well 99% of the time.

  I did a series of G.729 calls on the old client IPSec and customer AC, with the same laptop, using the same remote access connection. The "VPN server" for the IPSec VPN is an ASA5520 (8.0 (4)), on a connection of 100 Mbps with plenty of reserve, which runs also firewall services for an office of about 500 people and a small DMZ environment. The VPN server that is handling AnyConnect VPN is a new ASA5515-X (8.6 (1) 2), using the same channel of 100 Mbit/s Internet and running VPN services only. When you call running of tests on the old IPSec VPN, the jitter of appeal is pretty consistent, where jitter ave runs about 10 ms and jitter peak running 30-40ms. On the client ACTS, so that 'good' calls run about the same jitter as the old VPN, called the 'bad' (drops intermittent speaker, sometimes sounds 'mechanized'), which produce about 1 of evey 5 calls, run jitter ave to about 120-150ms and jitter of tip of 300-400 m for info, I don't see no packet loss to talk, just call jitter is through the roof. While in most cases, this could be written off as a "bad Internet connection", on the pretty old VPN tests prove a lot is not the issue.

  That said, anyone has an idea why the quality of calls is sometimes wrong via the AnyConnect VPN? Is there pest practices that I can work from, or any settings you can recommend? Thank you.

  Well, there are several things in our implementation that could help if possible, although I think you can open the case of the TAC, we saw some strange behaviors.

  Things to enable the audit side ASA/SSL:

  -DTLS - check if it is enabled and WORK (see the det filter name NAME_HERE anyconnect vpn-sessiondb)

  see if the packets are tunneled by the DTLS Protocol not TLS. The datagram transport is much better suited for performance.

  -Compression - so we see a lot of deployments with it enabled us say this as much as we can. Compression is for links to bandwidth low latency. In the modern internet, it should be used with caution.

  -check the ASP drop table on ASA (fall of claire asp, run the "show asp drop' rest and during the period of low performance monitor.)

  -additional recording "class... ssl connection. "can give you greater participation.

  -See the proto ssl_np - good starting point count

  the list goes on and.

  What is important to understand, is that the problem is with the traffic on the wire or from the use of SSL.

  Sniffer traces are essential.

  M.

• ESXi hosts SBS 2011, clients lose network via VPN

  Greetings,

  We have an ESXi Server (in a lab environment) who perform a SBS 2011 and a Windows 2003 (Terminal Server).

  We have two locations, connected via a VPN IPSec (2 boxes of ClearOS).

  The ESXi host is located in building r. customers in the construction of an experience no problem at all.

  Customers in the building B often lose connectivity to network share. We also failed when copying data. Do not forget that the servers are located in the building and issues affecting only users in the B building.

  We noticed the event ID 2012 on the VM SBS 2011 event viewer.

  The two buildings are connected to a cable broadband 10 mb / 1 mb ISP.

  NOD32 Antivirus is installed on the two virtual machines

  Any help would be appreciated!

  Thank you

  Fred9777

  Hello

  There are a few things to look out for more such links. The following steps were made on W2K and W2K3, so that they are still applicable for you.

  (1) is the VPN capable to manage the packet being sent by site B MTU size, sometimes the MTU on VPN size must be less than the default value of 1500 set LAN. You can check this scathing your server with a command like

  ping f-l 1500

  If you get a message like "packet needs to be fragmented but DF parameter.

  You will need to reduce the size of the MTU TCP/IP in the client registry. Try to ping the server with a size of 500 bytes and see how it goes.

  (2) setting the server TCP/IP stack

  In the registry HKLM \SYSTEM\CurrentControlSet\Services\Tcpip\Parameters, create or modify value DWORD of TcpMaxDataRetransmissions. By default, it is set to 5, but I recommend double this value to 10. The TcpMaxDataRetransmissions value is the number of retransmissions of TCP of a data segment without acknowledgement of receipt on an existing connection. TCP retransmits data segments until they are acknowledged or until the expiry of this value. Basically, when a client does not meet a package from the server, the server will attempt to retransmit the packet until TcpMaxDataRetransmissions many times. By increasing this value, you give the customer more time to answer on the server, which will help improve the flaky connections or connections with latency or higher than normal packet loss.

  HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\KeepAliveInterval and HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\KeepAliveTime.

  Both entered DWORD.
  KeepAliveInterval determines the interval between retransmissions keep until a response is received. If a response is received, the delay until the next keep alive transmission is again controlled by the value of KeepAliveTime.
  The connection will be broken once the number of retransmissions specified by TcpMaxDataRetransmissions is remained. KeepAliveInterval is set by default at 1000, which is one second.
  KeepAliveTime controls how many times TCP attempts to verify that an idle connection is still intact by sending a living package of the Dungeon. If the remote system is still reachable and running, he will acknowledge receipt of the living transmission to keep. KeepAliveTime is set by default to 7 200 000, or 2 hours.

  I hope this helps.

• VPN works with Sierra?

  I understand that the VPN does not yet, with the Sierra

  Is this a Bug? or, if this possibility has been deleted?

  Can we expect support once again with one of the 10.12. # updates?

  This is a very important feature to my office with it, we will not update for Sierra.

  Thank you

  VPNS work very well in Sierra as long as they don't use PPTP. Support for PPTP has been removed because it is not safe. By using a PPTP based VPN is useless. Your data is not safe.

• Tips to add a VPN router to my current network configuration

  Dear all

  My apologies if the answer to this question already exists, however, I searched in many situations and none seem to match what I'm after.

  I currently have an ISP modem/router in Bridge mode connected to a TC of Apple which is my wireless router, I have 2 Express airport connected to this acting as the extensors of the range.  I have a VPN service through the MyPrivate network I activate on the desired device when required and everything works fine.

  What I want to do now is to be able to use my AppleTV and burning Amazon via the VPN as well so you need to add a VPN router in the configuration.  I want to finish with 2 wireless networks running together for these devices who need VPN and those who are not.  I don't want to lose the opportunity to extend the network to express it however airport.

  If someone could explain to me if this is possible and if so how do I set up the network.

  Thanks in advance

  Mark

  Basically you would need a device that supports VPN-passthrough and VLANS for your goals of networking. MyPrivate network, seems to be a VPN SSL, which is a user-server configuration. In other words, you install a client VPN on your Mac and you connect to the VPN network MyPrivate server to establish a VPN tunnel.

  Networking two or more "separated", should be using a router that supports VLAN services. Each segment of VIRTUAL local area network, in essence, would be a separate, she either wired or wireless network or a combination of both. This would probably be the 'easiest' part for the installation program.

  Now how combining the two would be the question, and I don't know what would be the best way, or even if it is possible.

  A few thoughts:

  • Use a router that supports VLANS. Create at least two VIRTUAL LAN segments. One for Apple TV & Burns, one for Internet access in general. Connect the device to VPN client host on the first segment, and configure for Internet sharing.
  • Download a dedicated VPN network application that supports hosting of third-party VPN clients, like yours. You would still need a router that supports VLAN to provided separate network segments.
  • Hire a consultant network. Let them know what you the goals of networking and ask them to offer potential solutions.

• Settings lost VPN - iOS 10.0.2

  I had stored in my iPad VPN settings. VPN connections worked well until the latest iOS update. Now ALL my VPN connections disappeared. To make it even worse-, I am unable to put once again, because there are new mandatory fields: VPN type and shared key. I don't have the slightest idea how to fill them because I never need them when connecting to the VPN through my iMac - please see the screenshot.

  It drives me crazy. I welcome any suggestion.

  Prepare for removal of PPTP VPN before upgrade you to iOS 10 and macOS Sierra

  Preparation for iOS system administrators 10 and macOS Sierra should stop using PPTP VPN connections. Learn about alternatives, you can use to protect your data.

  If you have configured a PPTP VPN server, 10 iOS and macOS users Sierra will not be able to connect to it. iOS 10 and macOS Sierra will remove any profile VPN PPTP connections when a user upgrades from their device.

  Even if the PPTP protocol is always available on iOS 9 or an earlier version or OS X El Capitan and earlier, we do not recommend that you use it for secure, private communication.

  Alternatives for PPTP VPN connections

  Try one of these other VPN protocols for authentication by user that are safer:

  • L2TP/IPSec
  • IKEv2/IPSec
  • Cisco IPSec
  • VPN SSL clients on the App Store, such as those of AirWatch, Aruba, Check Point, Cisco, F5 Networks, MobileIron, NetMotion, Open VPN, Palo Alto Networks, Pulse Secure and SonicWall

• iPhone 6 s - how to remove hidden VPN Express app?

  A few days ago, I received a notification under the name of VPN Express app wanted access to my location information. I had never ordered or installed such an application and declined. The VPN Express App then retired to the background. I thought that I would remove just but discovered it was hidden somehow. If I ask Siri to open it, it opens. How can I find and remove hidden apps? Similar experiences? Anyone know what is happening with this app?

  Use the Spotlight search, it will show where the app.