Similar Questions

• How many group Supportepar ASA 5520 vpn for remote access

  Hello

  Howmany vpn group is supported on asa 5520 with configuraion vpn remote access.

  Concerning

  1 if nat-control is disabled and you do not have any other order NAT in your config file, you do not have it. Try to remove the existing "NAT 0" command and "clear xlate."

  2. you must ensure that your network inside know they can go by ASA to access remote vpn client IP. You have any device layer 3 behind the ASA that does the routing. If so, please verify that this is the routing table.

• Diffie-Hellman - ASA firewall groups

  Hi all

  A couple of questions I hope you can help me with that.

  Please can you tell me where I would change the Diffie-Hellman group for phase 1 on an ASA firewall and is - it possible on the ASDM?

  Also, you must enable PFS have to DH on the phase 2?

  Thank you very much

  Alex

  Hello Alex,.

  You can change the Diffie-Hellman group for phase 1 of ASA by configuring the following command:

  crypto ISAKMP policy

  Group

  To configure the same ASDM, go to the

  Configuration > VPN Site to Site > connection profiles > add/edit

  You will find in settings, IPsec, encryption algorithms. Click on 'Manage' icon on the right of "IKE policy". Click OK.

  Click on Add/Edit and there will be an option to change the Diffie-Hellman group.

  And finally, what about the PFS application, you can enable PFS to be DH in phase 2. activation of PFS will force a new Exchange of key DH for phase 2.

  Note: it is not mandatory, its optional. If its configured on one side, then it must be on the remote side as well.

  Kind regards

  Dinesh Moudgil

• What power of the Diffie-Hellman encryption and authentication hash group do you use?

  Hi guys,.

  I just want to understand what people are using and prefer the investigation.

  • Diffie-Hellman group do you use or do you think is enough?
  • What Type of encryption & bits do you use?
  • What Type of hash & bits do you use?
  • Do you use the same parameters for Phase 2?
  • Do you use the Diffie-Hellman PFS for Phase 2 group?

  To make things more neat, you can respond to the following format:

  Phase 1 ISAKMP policy

  • Diffie-Hellman Group 5
  • AES 128
  • SHA 384

  IPSec policy phase 2

  • No PFS
  • AES 256
  • SHA 256

  Andrew,

  Cisco's perspective on what the client should work at least.

  http://www.Cisco.com/Web/about/security/intelligence/nextgen_crypto.html#16

  M.

• Server has a weak and ephemeral Diffie-Hellman public key

  Seems 45 Chrome and Firefox 40 block ciphers DHE

  Today, we get the following errors when you browse the vRO Web Interface (and the Configuration interface)

  Tested with the device of the two vRO 6.0.1 and 6.0.2 versions

  Everyone knows this?  And is there no work around better than using the '-cipher-suite-blacklist = "parameter in Chrome?

  I have raised a support ticket with VMware, but thought it would be an idea to post here as well.

  Chrome:

  

  Server has a weak and ephemeral Diffie-Hellman public key

  ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY

  Hide details

  This error can occur when you connect to a secure (HTTPS) server. This means that the server tries to establish a secure connection, but because of a disastrous misconfiguration, the connection would be not sure at all!

  In this case, the server must be fixed. Google Chrome will not use unsecured connections to protect your privacy.

  Learn more about this problem.

  Firefox:

  

  The secure connection failed

  An error occurred during a connection to vro-device - hostname:8283. SSL has received a low ephemeral Diffie-Hellman key in the handshake message exchange the server key. (Error code: ssl_error_weak_server_ephemeral_dh_key)

  The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.

  Contact the web site owners to inform them of this problem.

  You can try to change the two server.xml file in: / etc/vco/app-server and/etc/vco/configuration in the update of the file server.xml "ciphers" attribute by removing TLS_DHE_... ciphers. Then, restart the vco-server, vco-configuration services server vco and vco-configuration services

• is there a work around for the connection with https. the ssl/tls security patch prevents us to connect to a known trusted site

  I made the mistake of updating to Firefox yesterday and with the ssl security fix find I can most connect to a web site in a data center which is protected by a fortigate appliance.

  I know the correct answer is to get the updated device updated or replaced, but in the meantime, I'm desperately need a workaround solution. It would be nice if there was an archive of old versions of Firefox.

  I changed the configuration settings to allow the renegotiation, but I think that the problem is more fundamental than that it does not appear that older versions of ssl are more provided.

  The error message "the connection was reset" can be caused by a bug for the attack of the BEAST fix (browser exploit against SSL/TLS) that the server does not support.

  • [918127/questions/918127]
  • [918028/questions/918028]

  See comment 60 in this bug report for workaround, but be aware that this makes you vulnerable to the attack of the BEAST.

  • bug 702111 - intolerant servers to record split of 1: n-1. "The connection was reset".

• PowerShell Enterprise Manager-Connect could create not SSL/TLS secure channel

  Hi all

  I am writing a Powershell Script to manage a Compellent environment.

  I got an error, what's new for me: I can not connect to EM because SSL/TLS connection is not possible.

  I did a search "Google"and found that Microsoft is changing some things in SSL/TLS. "
  MS-related Patch is installed and the related registry keys are defined.

  I have a Windows Server 2012 (R2) running Enterprise Manager and I work with the
  new order Compellent-Set DellStoragePowerShellSDK_v2_2_1_362A.

  Someone knows how to deal with this?

  Thanks for any help

  Concerning

  I had the same problem and was able to resolve to 3_1_1_72 copilot SDK.

• vulnerability of Diffie-Hellman < 1024 Bits (dead end) on the VPN

  Hello world

  Scans of external provider shows a vulnerability for Diffie-Hellman< 1024="" bits="" (logjam)="" on="" the="" vpn ="" on="" our="" cisco="" asa="" running="">

  No idea how can I fix on Cisco ASA 5520?

  Concerning

  Mahesh

  IT depends on how the analysis was done. If only they check your turned to the public outside the address and then only having do not SSL services on it will make the vulnerability "disappear".

  If you need the service out of all interfaces, you need to upgrade so that the SSL services are patches they are seen on any interface.

  Or you could simply not patch and accept the risk.

• SRM 5.5 - the remote server returned an error: (503) server unavailable, could not create SSL/TLS secure channel

  Design:

  2 vCenter VMs version 5.5 on new W2k12. x. related and the same use facilities key SSO (default installation)

  2 x fresh install of the SRM VMs version 5.5

  20 + hosts vSphere 5.5 with DR/HA configured and working. Two dvSwitches (one per site) configured with the groups of port / VLAN work

  Question:

  Installation goes well until I needed to activate the Plugin SRM in vCenter.  Plugin called "Plug-ins available" and I click on the link 'download and install '.

  I had two separate fouls on both servers vCenter, both with same errors if it is compatible.

  Errors:

  (attached file viclient-3 - 000.log)

  The request has been aborted: could not create SSL/TLS secure channel.

  (attached file viclient-3 - 000.log)

  The remote server returned an error: (503) server unavailable

  I guess that the two are linked and probably something with SSO.  Post installation on each server vCenter vCenter, at the level of the vCenter, I added the "Domain Admins" AD Group with all permissions and then properly connected and built the group with this set of credentials.

  I need help to debug this further.

  Thank you

  ************

  < < Updated > >

  Seems the features and functions are NOT present so you don't not sign in as '[email protected]' (SSO account by default for this "basic" configuration)

  But even with this connection, I have noticed that there is NO option in the webclient service, to perform the installation of a vCenter plug-in.  It does not appear in the vSphere Client (see images).

  I also found it weird that the web client to vCenter illustrates SRM roles but the traditional client does not work.

  Maybe it's a clue to the root cause of...

  Post edited by: ArrowSIVAC 2013-10-07 to provide more details and attachments

  Post edited by: ArrowSIVAC, this is related to the case of support for vmware 13384832210 This problem is solved.  Several pieces here. (1) vCenters were installed secretly with local account as own databases, and this is how I usually do things (2) MRS. servers were built as separate virtual machines, VMWare vs guides guess and documents in anticipation of your SRM installation on the same server as vCenter Documentation / Installer is not clarified that you MUST use domain for MRS accounts in the multiplayer linked site facilities and if you do not, the installation is completed without error, but resources will not work. Errors have for client plugin does not work. It was the symptom, the reason was that the SRM service did not work.  The service would not start and only an error in the Windows event log is 'vmware-dr stopped service' is because the connectivity issue of MRS to vCenter hosted the new SQL instance database SRM. The SRM database has been installed on the instance of vCenter server as vCenter database.  And just like the installation of default vCenter I chose localhost\administrator for database owner.  The database was filled with tables, but SRM has connectivity problems.   The fix for this was to add "domain\user" (called mine SRMAdmin and added as a member of domain admin), add this user in SQL in the list of database users and then promoted as the owner of SRM database and define the rights on DBO. This fixed the first issue. Second issue was that SRM installation set the DSN system identification information, but does not specify that they must also be domain based accounts.  The installation program is not not clear here and should only allow user domain\username when installing. After several attempts because of the root and installation methods different tried, how to get the installation complete and properly configure was to log on to the system AS the example domain account: domain\srmadmin = > Configuration System DSN by selecting "How should SQL Server verify the authenticity of the login ID?"  "with integrated Windows authentication', and then the installation of SRM to the"Enter Database user credentials"value"domain\srmadmin ".  Then and communication services to the vCenter SRM hosted DB database will work correctly. < See images attached benchmarks >

  attached files

• Dreamweaver (on Windows 7) does not connect to the server, IIS (v7) using "FTP over SSL/TLS...". »

  I am weather evauating to buy Dreamweaver CS6...

  Trial of Dreamweaver CS6 (on Windows 7) does not connect to the IIS server (v7) using "FTP over SSL/TLS (explicit encryption).  I have a NEW Godaddy SSL certificate installed on the IIS server.

  On the connection between States Dreamweaver: "server certificate expired or contains invalid data."

  I tried:

  -ALL Dreamweaver Server configuration options

  -L' use of multiple certificates (I tried 2048 and 4096-bit Godaddy SSL certificates)

  -Make sure the certificate "issued to the"domain name is my domain name. "

  I am able to connect without a problem with Filezilla, Filezilla equivalent affecting 'explicitly require FTP over TLS.  I can connect both using Microsoft Expression web.

  This has been discussed previously. I recommend reading my old thread for details:

  http://forums.Adobe.com/thread/889530

  But to make a long story short, Godaddy is incorrectly signed SSL certificates on shared servers.  The servers/ips/domains and the certificate do not match.  So DW and many other tools fail authenticate with Godaddy SSL connections.  Some users have stated that other tools FTP, such as Filezilla as you mentioned, bypass and automatically change your connection to insecurity, but DW is very picky.  Once you modify encryption against zero, the connection will be accepted.  Best solution is if you want a certificate SSL correctly signed move to another host because Godaddy refuses to admit that they are wrong with SSL certificates on their sites.  These warnings will appear also to your users if you have a store saying the SSL certificate does not match the domain/ip and this can make users checking in a very nervous showcase.

• Where to go to turn off the SSL/TLS e-mail client?

  Avast detected a secure connection from my e-mail program (processhelpctr.exe) to th POP server 244.1127.217.20 (att.net).  And asked me to disable SSL/TLS in my mail client so that the Mail scanner can analyze my mail.  The e-mail scanner will provide security SSL/TLS itself.

  What should I do?  Where can I find SSL/TLS to turn off?

  I would recommend that you uninstall Avast and reinstall without mail analysis feature.  Mail scanners do NOT make you it safer and often interfere with the good reception of the mail. Brian Tillman [MVP-Outlook]
  --------------------------------
  https://MVP.support.Microsoft.com/profile/Brian.Tillman
  If a response may help, please vote it as useful. If a response to the problem, please mark it as an answer.

• Connection to blog___An error error occurred when tries it to connect your underlying connectio of blog___The was closed. could not establish trust relationship for the secure channel.__you SSL/TLS must correct this error before proceeding

  I installed Microsoft Security Essentials 2 days back... I get some error messages since then.

  I use Windows live writer to load my post on the blogger. My computer is Windows XP with SP3.

  Since installing MSE, when I try to post on my blog using windows live writer, I would say an error message:

  "Connection to the blog error."

  An error occurred while trying to connect to your blog

  The underlying connectio was closed. could not establish trust relationship for the SSL/TLS secure channel.
  You must correct this error before proceeding. "

  Please help me solve this problem. Your valuable advice is apprecited. Thank you.

  Post in the MSE forums:

  http://answers.Microsoft.com/en-us/protect/default.aspx

• Cannot change the guest account group

  Long story short.  The guest account is somehow in the Administrators group.

  I use Windows Vista Home.

  When I am logged into the guest account and I look under the name he said administrator.  I'm going to change the type of account, it shows that it is in the standard group.  It won't let me even change for the management group.  It is in the Administrators group or what?  READ MORE that it gets better.

  When I'm on the command line and I type net user comments he says that membership in the local Administrators group.  Now, here's what I don't understand.  I do net localgroup guests comments / add and it will add to the guests group, and it is then in the customers and group administrators.  I can then do net localgroup guests comments/delete and it deletes it.  Now I CANNOT net localgroup administrators/delete comments because he says that it is not within the group, BUT if I net localgroup administrators comments / add that also says that he cannot do it because it's already in the Group?  That continues.  A I royally mess up something or it's a certain type of problem?  Please help me.  Thank you

  Hello

   

  Do the following and check.

   

  Check in the user management

  a. Click Start, type "Edit users and local groups.
  b. click on 'Users', which is located on the left side
  c. right-click Guest, and then select Properties.
  d. go to the Member tab, select the administrator group, and then click on remove.

   

  It will be useful.

   

  Aziz Nadeem - Microsoft Support

  [If this post was helpful, please click the button "Vote as helpful" (green triangle). If it can help solve your problem, click on the button 'Propose as answer' or 'mark as answer '. [By proposing / marking a post as answer or useful you help others find the answer more quickly.]

• SSL/tls over TCP using tcplistner socket or a tcpclient

  I am trying to use ssl/tls, TCP, but in my code, the socket is used not a tcpclient or tcplistner. I searched on the net at least 200 links but I have not everything related that. I want to use less coding and fact ssl or tsll during the tcp socket connection. I have a client, server, certification authority, a key to the .key format. Please help with the example.

  Hello

  TechNet support team can solve your problem correctly since your question is beyond the scope of what is generally answered here.

  Kind regards.

• Server has a small ephemeral Diffie-Hellman public key ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY

  Hello

  I first Cisco and I get the following error when I go to open a session. I used IE, Chrome, Firefox, but have the same condition. To get the solution.

  Server has a low public key ephemeral Diffie-Hellman

  ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY

  Create a new shortcut and click on the link provided to run the program.  Make sure that Chrome is in the right place of the folder.