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  • Design Stock Server Application in C++

    - by Avinash
    [Queston asked in ML Interview] Design an server/application which handle multiple incoming stock information ( stock symbol and values ) Server need to store the information in some cache ( need to design the data structure ), There are multiple client connected to server using tcp/ip socket. They will subscribe to particular request say stock symbol XYZ , and may be for more then one. As and when there is change the stock symbol server should broadcast the information to subscribed client. If tcp/ip write failed, server should handle the unregistration of the client. What various data structures will be used and how threading model will be ?

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  • How to figure out why ssh session does not exit sometimes?

    - by WilliamKF
    I have a C++ application that uses ssh to summon a connection to the server. I find that sometimes the ssh session is left lying around long after the command to summon the server has exited. Looking at the Centos4 man page for ssh I see the following: The session terminates when the command or shell on the remote machine exits and all X11 and TCP/IP connections have been closed. The exit status of the remote program is returned as the exit status of ssh. I see that the command has exited, so I imagine not all the X11 and TCP/IP connections have been closed. How can I figure out which of these ssh is waiting for so that I can fix my summon command's C++ application to clean up whatever is being left behind that keeps the ssh open. I wonder why this failure only occurs some of the time and not on every invocation? It seems to occur approximately 50% of the time. What could my C++ application be leaving around to trigger this?

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  • books about Firewall development

    - by VP
    Hi, i was just asked today, but i couldn't answer precisely so that's why i'm asking here :-) There is any book about Firewall design and implementations (Unix environment and C)? For sure, i could recommend TCP/IP books, and what i did, but there is some design decisions, that are not related with TCP/IP. For sure, i said about the netfilter/iptables (RTFSC) but as well we cannot assume that the netfilter/iptables is the best approach since we don't have too many baselines (ok, we could compare it with PF, but again, read source code to understand design decisions is not always the best way). So if anybody knows a book about this theme, please shoot it!

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  • WCF App using Peer Chat app as example does not work.

    - by splate
    I converted a VB .Net 3.5 app to use peer to peer WCF using the available Microsoft example of the Chat app. I made sure that I copied the app.config file for the sample(modified the names for my app), added the appropriate references. I followed all the tutorials and added the appropriate tags and structure in my app code. Everything runs without any errors, but the clients only get messages from themselves and not from the other clients. The sample chat application does run just fine with multiple clients. The only difference I could find is that the server on the sample is targeting the framework 2.0, but I assume that is wrong and it is building it in at least 3.0 or the System.ServiceModel reference would break. Is there something that has to be registered that the sample is doing behind the scenes or is the sample a special project type? I am confused. My next step is to copy all my classes and logic from my app to the sample app, but that is likely a lot of work. Here is my Client App.config: <client><endpoint name="thldmEndPoint" address="net.p2p://thldmMesh/thldmServer" binding="netPeerTcpBinding" bindingConfiguration="PeerTcpConfig" contract="THLDM_Client.IGameService"></endpoint></client> <bindings><netPeerTcpBinding> <binding name="PeerTcpConfig" port="0"> <security mode="None"></security> <resolver mode="Custom"> <custom address="net.tcp://localhost/thldmServer" binding="netTcpBinding" bindingConfiguration="TcpConfig"></custom> </resolver> </binding></netPeerTcpBinding> <netTcpBinding> <binding name="TcpConfig"> <security mode="None"></security> </binding> </netTcpBinding> </bindings> Here is my server App.config: <services> <service name="System.ServiceModel.PeerResolvers.CustomPeerResolverService"> <host> <baseAddresses> <add baseAddress="net.tcp://localhost/thldmServer"/> </baseAddresses> </host> <endpoint address="net.tcp://localhost/thldmServer" binding="netTcpBinding" bindingConfiguration="TcpConfig" contract="System.ServiceModel.PeerResolvers.IPeerResolverContract"> </endpoint> </service> </services> <bindings> <netTcpBinding> <binding name="TcpConfig"> <security mode="None"></security> </binding> </netTcpBinding> </bindings> Thanks ahead of time.

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  • Effective way of String splitting

    - by openidsujoy
    I have a completed string like this N:Pay in Cash++RGI:40++R:200++T:Purchase++IP:N++IS:N++PD:PC++UCP:598.80++UPP:0.00++TCP:598.80++TPP:0.00++QE:1++QS:1++CPC:USD++PPC:Points++D:Y++E:Y++IFE:Y++AD:Y++IR:++MV:++CP:~ ~N:ERedemption++RGI:42++R:200++T:Purchase++IP:N++IS:N++PD:PC++UCP:598.80++UPP:0.00++TCP:598.80++TPP:0.00++QE:1++QS:1++CPC:USD++PPC:Points++D:Y++E:Y++IFE:Y++AD:Y++IR:++MV:++CP: this string is like this It's list of PO's(Payment Options) which are separated by ~~ this list may contains one or more PO contains only Key-Value Pairs which separated by : spaces are denoted by ++ I need to extract the values for Key "RGI" and "N". I can do it via for loop , I want a efficient way to do this. any help on this.

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  • Is there such a thing as a dektop application event aggregator, similar to that used in Prism?

    - by brownj
    The event aggregator in Prism is great, and allows loosely coupled communication between modules within a composite application. Does such a thing exist that allows the same thing to happen between standalone applications running on a user's desktop? I could imagine developing a solution that uses WCF with TCP binding and running inside Windows Process Activation Service. Client applications could subscribe or publish events to this service as required and it would ensure all other listeners get notified of events as appropriate. Using TCP would enable event messages to be pushed out to clients without the need for polling, ensuring messages are delivered very quickly. I can't help but think though that such a thing would already exist... Is anyone aware of something like this, or have any advice on how it may be best implemented?

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  • Interconnecting Emulator Instances Android

    - by blah01
    Hi all I want to communicate two emulators via DatagramSocket in Android. Each of them is a Node in a P2P system. Thus each of them has a server Thread and client Thread (created per GUI event). This is how I create server public static final String SERVERIP = "10.0.2.15"; //... run() { InetAddress serverAddr = InetAddress.getByName(SERVERIP); DatagramSocket socket = new DatagramSocket(SERVERPORT,serverAddr); while(true) { byte[] buf = new byte[29]; DatagramPacket packet = new DatagramPacket(buf, buf.length); socket.receive(packet); //... } } The port is given by the user during initializing application. The client part (requesting some data) InetAddress serverAddr = InetAddress.getByName("10.0.2.2"); //... Log.i("Requester", "Trying to connect to device port = "+target); DatagramSocket socketJ = new DatagramSocket(); byte[] bufJ = Adaptor.createStringMsg(Adaptor.createJoingMsg(id, Location.getX(), Location.getY())).getBytes(); DatagramPacket packetJ = new DatagramPacket(bufJ, bufJ.length, serverAddr, target); Log.i("Requester", "Sending: '" + new String(bufJ) + "'"); socketJ.send(packetJ); Log.i("Requester", "Done."); Some additional info. The Node1 (emulatorA) has a server on port 8000 and Node2 (emulatorB) has a server on port 8001. The target port for "client part" is read properly. What tried to do is to set the redirection as such: //emulatorA redir add tcp:8000:8000 //emulatorB redir add tcp:8001:8001 However I can not get any communication beetwen those 2 emulators. As far as I understood the android tutorial about it should work like this redir add tcp:localhostPort:emulatorPort. I'm stuck with it :/. Can anyone point me the mistake or give some good advice. For the record while I was testing communication on a single device (client faking other node) everything worked, so I don't think there is a bug in the code. Btw does any one knows how can I get 2 set of logs for those 2 emulators (logA, logB)? It would help me a lot.

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  • Effective way of String spliting C#

    - by openidsujoy
    I have a completed string like this N:Pay in Cash++RGI:40++R:200++T:Purchase++IP:N++IS:N++PD:PC++UCP:598.80++UPP:0.00++TCP:598.80++TPP:0.00++QE:1++QS:1++CPC:USD++PPC:Points++D:Y++E:Y++IFE:Y++AD:Y++IR:++MV:++CP:~ ~N:ERedemption++RGI:42++R:200++T:Purchase++IP:N++IS:N++PD:PC++UCP:598.80++UPP:0.00++TCP:598.80++TPP:0.00++QE:1++QS:1++CPC:USD++PPC:Points++D:Y++E:Y++IFE:Y++AD:Y++IR:++MV:++CP: this string is like this It's list of PO's(Payment Options) which are separated by ~~ this list may contains one or more PO contains only Key-Value Pairs which separated by : spaces are denoted by ++ I need to extract the values for Key "RGI" and "N". I can do it via for loop , I want a efficient way to do this. any help on this.

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  • MySQL on Windows-7 (64-bit) on 0.0.0.0:3306 rather than 127.0.0.1:3306

    - by Mark Baker
    I've just installed the latest production release of MySQL (64-bit) on my Windows 7 box. It was a straight vanilla install, using all defaults; but phpmyadmin can't see it at all. MySQL is configured as a service to start automatically, and I know it's running because the MySQL GUI tools work correctly. Doing a netstat -a, I see TCP 0.0.0.0:3306 Marks-Netbook:0 LISTENING when I'd expect to see TCP 127.0.0.1:3306 Marks-Netbook:0 LISTENING I don't know if this is the reason phpmyadmin can't connect, but suspect that it is probably the case. Can anybody confirm whether this is the likely cause, and/or suggest how I can reso;lve this?

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  • Effective way of String splitting C#

    - by openidsujoy
    I have a completed string like this N:Pay in Cash++RGI:40++R:200++T:Purchase++IP:N++IS:N++PD:PC++UCP:598.80++UPP:0.00++TCP:598.80++TPP:0.00++QE:1++QS:1++CPC:USD++PPC:Points++D:Y++E:Y++IFE:Y++AD:Y++IR:++MV:++CP:~ ~N:ERedemption++RGI:42++R:200++T:Purchase++IP:N++IS:N++PD:PC++UCP:598.80++UPP:0.00++TCP:598.80++TPP:0.00++QE:1++QS:1++CPC:USD++PPC:Points++D:Y++E:Y++IFE:Y++AD:Y++IR:++MV:++CP: this string is like this It's list of PO's(Payment Options) which are separated by ~~ this list may contains one or more PO contains only Key-Value Pairs which separated by : spaces are denoted by ++ I need to extract the values for Key "RGI" and "N". I can do it via for loop , I want a efficient way to do this. any help on this.

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  • alias not working on sql server 2008 r2

    - by Saba
    I have several servers with SQL Server 2008 R2 instances on them, and alias doesn't work on any of them. Clients connect to these servers using TCP/IP without any problem, telnet works on IP/Port I use for my alias, the firewall exceptions are created, basically everything works fine, except when I create an alias, I can not connect through it to my server using either TCP/IP or named pipes (local or one of other servers). I've installed latest cumulative updates, which updates native client too (which I think is the source of problem) and I still have the problem. The stranger part is, if I create an alias on a server with sql server 2005 (native client 9), I can connect to my 2008 r2 instances. Any suggestions?

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  • SSTP client disconnects shortly after successfully connected to VPN

    - by Eran Betzalel
    I'm successfully authenticating and connecting to a SSTP VPN (on windows 2008) from my windows 7 machine, but for some reason, the connection is disconnected about a 1-2 seconds after it's established. I've done the following: Defined a SSTP VPN on my windows server 2008. Defined the same machine as CA. Issued the needed certificates and published them on the client. I'm currently testing this VPN inside my LAN so all the needed ports are opened. Here are the event log entries when trying to connect: Error Log (Client): The user HOME\User dialed a connection named Home VPN which has terminated. The reason code returned on termination is 829. Error Log (Server-VPN): The user HOME\User connected on port VPN0-0 on 7/27/2012 at 1:57 AM and disconnected on 7/27/2012 at 1:57 AM. The user was active for 0 minutes 0 seconds. 312 bytes were sent and 4528 bytes were received. The reason for disconnecting was user request. What would be the issue? How can I resolve or debug it? UPDATE: I've found an event log (Log=System, Source=RasSstp) message on the windows 7 machine that tries to connect to the VPN: The SSTP-based VPN connection to the remote access server was terminated because of a security check failure. Security settings on the remote access server do not match settings on this computer. Contact the system administrator of the remote access server and relay the following information: SHA1 Certificate Hash: 065D681...520375552F SHA256 Certificate Hash: 18DED363...EEEE28CFD00

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  • Cannot connect with Cisco VPN but can connect with ShrewSoft VPN

    - by rodey
    EDIT: We connected an air card to the computer to use a different Internet connection and using the Cisco software, we were able to successfully connect to our VPN server. I just don't understand why the ShrewSoft VPN client would connect but the Cisco connection won't. I'm not our network admin so sorry if I butcher some of the terminology. I have a computer at remote site that connects to our network through Cisco VPN. It uses the Cisco VPN software to do so. The problem is that the computer at this site cannot connect to our VPN because it is getting error "Reason 412: The remote peer is no longer responding." To see if perhaps something on their network was blocking the connection, I installed the ShrewSoft VPN client on the computer, imported our .pcf file and connected with no problem. I have tried two different versions of the Cisco VPN software (4.8.0.* and 5.0.03.*) and have the same problem. I installed Wireshark on the computer and have confirmed (while trying to connect through Cisco) that the computer is trying to contact the VPN server but is not receiving a response. We are not having any other problems regarding users not being able to connect. I'm at a loss at what else to check. I'll be monitoring this and have access to the computer at any time.

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  • VirtualBox Issue: virtualbox changed my Computer Name's ip address in Windows

    - by suud
    I had installed virtualbox 4.2.2 in Windows 7. My Computer Name is: MY-PC My IP address (using ipconfig /all command) is: 192.168.1.101 My IP is dynamic and I set DNS to google dns (8.8.8.8) When I ping MY-PC, I got this result: Pinging MY-PC [192.168.56.1] with 32 bytes of data: Reply from 192.168.56.1: bytes=32 time<1ms TTL=128 Reply from 192.168.56.1: bytes=32 time<1ms TTL=128 Reply from 192.168.56.1: bytes=32 time<1ms TTL=128 Reply from 192.168.56.1: bytes=32 time<1ms TTL=128 My virtualbox was not running and I expected the ip adress of MY-PC is 192.168.1.101, not 192.168.56.1 Then I run command: nbtstat -a MY-PC and I got this result: VirtualBox Host-Only Network: Node IpAddress: [192.168.56.1] Scope Id: [] NetBIOS Remote Machine Name Table Name Type Status --------------------------------------------- MY-PC <00> UNIQUE Registered WORKGROUP <00> GROUP Registered MY-PC <20> UNIQUE Registered MAC Address = 08-00-27-00-60-B3 Local Area Connection: Node IpAddress: [0.0.0.0] Scope Id: [] Host not found. Wireless Network Connection: Node IpAddress: [192.168.1.101] Scope Id: [] NetBIOS Remote Machine Name Table Name Type Status --------------------------------------------- MY-PC <00> UNIQUE Registered WORKGROUP <00> GROUP Registered MY-PC <20> UNIQUE Registered MAC Address = 94-0C-6D-E5-6D-5D So it seems virtualbox caused this problem. I want to know how to change back my Computer Name's ip address to 192.168.1.101 (or any ip address that set by my internet connection)?

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  • Teamviewer: cannot control monitor 1, but can control monitor 2

    - by DaveT
    I'm using the web client of Teamviewer from my work computer trying to control my home computer. I have 2 monitors on the remote desktop, but for some reason only have control on the second monitor. When I switch to the main monitor (monitor 1), I cannot do anything and cannot even move the cursor. But I have no issues when I switch over to the second monitor (monitor 2). I used to have no issues with either, but in the past couple of months this has been causing me issues. Anyone have a suggestion? Thanks!! Also... Here is the log from the Teamviewer session. Showing me switching back and forth between the monitors. (just in case this will help). I had to remove the links in order to post the log since I don't have enough reputation points, but they were just teamviewer login weblinks. =============================================================================== 21.08 16:00:41,176: Version: 9.0.15099 21.08 16:00:41,177: Sandbox: remote 21.08 16:00:41,177: SysLanguage: en 21.08 16:00:41,177: VarLanguage: en 21.08 16:00:41,177: Flash Player: PlugIn (WIN 14,0,0,179) 21.08 16:00:41,178: UseLanguage: en 21.08 16:00:41,178: UseLanguage: en 21.08 16:00:41,182: TeamViewer hasPassword: true 21.08 16:00:41,418: ExternalConnect id=910035824 21.08 16:00:41,419: CT connect 910035824 masterURL: , sandbox = remote 21.08 16:00:41,425: MC.requestRoute(910035824) 21.08 16:00:41,426: MC.sendMasterCommand text=F=RequestRoute2&ID1=777&Client=TV& ID2=910035824&SA_AccountID=26641022&SA_PasswordMD5HashBase64Encoded=& SA_SessionSecret=f7H6Z7SYfX5ahQ7SJq/r/K20PBYg9fOZhp+DKLhf5ts=&SA_SessionID=1558929948& V=9.0.15099&OS=Flash 21.08 16:00:41,426: MC wait for ping completion 21.08 16:00:42,064: PS.socket event: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:42,182: PingThread: TCP-Ping ok 21.08 16:00:42,183: MC.socket mode = TCP, MasterURL: 21.08 16:00:42,183: MC.connect: 21.08 16:00:43,058: PS.socket event: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:43,058: MC.connectHandler: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:43,236: MC.requestRouteResponse: [email protected]_10800_128000_762319420_910035824_10000__1_0_16778176_128000_16778176: 128000;2147483647:1280000;4:640000_786297_786297 21.08 16:00:43,239: CT init socket: TCP 21.08 16:00:43,513: PS.socket event: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:43,514: CT.connectHandler: [Event type="connect" bubbles=false cancelable=false eventPhase=2] 21.08 16:00:43,519: Browser name: Netscape 21.08 16:00:43,936: CMD_IDENTIFY id=910035824 ver=2.41 21.08 16:00:44,666: CMD_CONFIRMENCRYPTION: encryption confirmed 21.08 16:00:44,667: Started resendrequest timer 21.08 16:00:45,063: Remote Version: TV 009.000 21.08 16:00:45,501: start classic authentication 21.08 16:00:45,502: Login::SendRequestToConsole(): url= 21.08 16:00:45,828: start srp authentication 21.08 16:00:46,983: checkFirstPacket ok, m_LastReceivedPacketID =4 21.08 16:00:47,148: Login::SendRequestToConsole(): url= 21.08 16:00:47,478: start srp authentication 21.08 16:00:48,210: Login::SendRequestToConsole(): url= 21.08 16:00:48,485: checkFirstPacket ok, m_LastReceivedPacketID =7 21.08 16:00:48,780: TVCmdAuthenticate_Authenticated: 1 21.08 16:00:49,321: Connected to 910035824, name=NEWMAN, os=14, version=9.0.31064 21.08 16:00:49,329: ConnectionAccessSettings: RemoteControl: AllowedFileTransfer: AllowedControlRemoteTV: AllowedSwitchSides: DeniedAllowDisableRemoteInput: AllowedAllowVPN: AllowedAllowPartnerViewDesktop: Allowed 21.08 16:00:52,195: unexpected TVCommand.CommandType == 56 21.08 16:00:52,231: CW received display params: 1680x1050x8 monitors: 2 (active:0) 21.08 16:00:52,301: Caching active, version=2 21.08 16:03:47,158: CW received display params: 1680x1050x8 monitors: 2 (active:1) 21.08 16:04:24,447: CW received display params: 1680x1050x8 monitors: 2 (active:0) 21.08 16:04:40,609: CW received display params: 3360x1050x8 monitors: 2 (active:-1) 21.08 16:04:59,802: CW received display params: 1680x1050x8 monitors: 2 (active:1) 21.08 16:04:59,933: CW received display params: 1680x1050x8 monitors: 2 (active:1) 21.08 16:05:58,419: CW received display params: 1680x1050x8 monitors: 2 (active:0) 21.08 16:06:36,824: CW received display params: 1680x1050x8 monitors: 2 (active:1) 21.08 16:07:07,232: CW received display params: 1680x1050x8 monitors: 2 (active:0)

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  • SSH error 114 when connect with FinalBuilder 7

    - by mamcx
    I'm testing FB 7 and try to connect to my Mac OS X Snow Leopard machine. I can connect with paramiko (python SSH library) but not FB7. The only thing I get is: SSH error encoutered: 114 I try stopping & restarting the share session on Mac OS X. update: I enable server debug and get this log: debug1: sshd version OpenSSH_5.2p1 debug1: read PEM private key done: type RSA debug1: private host key: #0 type 1 RSA debug1: read PEM private key done: type DSA debug1: private host key: #1 type 2 DSA debug1: rexec_argv[0]='/usr/sbin/sshd' debug1: rexec_argv[1]='-Dd' debug1: Bind to port 22 on ::. Server listening on :: port 22. debug1: Bind to port 22 on 0.0.0.0. Server listening on 0.0.0.0 port 22. debug1: fd 5 clearing O_NONBLOCK debug1: Server will not fork when running in debugging mode. debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8 debug1: inetd sockets after dupping: 3, 3 Connection from 10.3.7.135 port 49457 debug1: Client protocol version 2.0; client software version SecureBlackbox.8 debug1: no match: SecureBlackbox.8 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.2 debug1: privsep_preauth: successfully loaded Seatbelt profile for unprivileged child debug1: permanently_set_uid: 75/75 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: client->server aes128-ctr [email protected] none debug1: kex: server->client aes128-ctr [email protected] none debug1: expecting SSH2_MSG_KEXDH_INIT debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user mamcx service ssh-connection method none debug1: attempt 0 failures 0 debug1: PAM: initializing for "mamcx" Connection closed by 10.3.7.135 debug1: do_cleanup debug1: PAM: setting PAM_RHOST to "10.3.7.135" debug1: do_cleanup debug1: PAM: cleanup debug1: audit_event: unhandled event 12

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  • Getting SMB file shares working over a PPTP VPN

    - by Ben Scott
    I'm having issues getting SMB file shares working over a PPTP VPN. The server setup consists of a security device (DrayTek V3300) which passes the PPTP authentication to a SBS2003 server running RRAS. The server is the DC and provides DNS and WINS, the single NIC's name server is set to the NIC's IP (192.168...), and DHCP on the DrayTek sets the server IP as the DNS. If I create a new VPN connection in Win7, leaving everything as default apart from the server, username, password and domain, I can: ping everything by IP address resolve IPs with nslookup using their fully-qualified name, as in nslookup fileserver.mydomain.local ping machines by fully-qualified name, as in ping fileserver.mydomain.local However if I try to access a file share: within Explorer, I get "Windows cannot access ..." with "Error code: 0x80004005 Unspecified Error", using net use z: \\fileserver.mydomain.local\share, I get "System error 53 has occurred. The network path was not found." If I add the machine name to my HOSTS file I can use the file share, which is my last-ditch workaround, but I have a number of VPN users and would rather a solution that doesn't involve me trying to hand-edit system files on computers half a country away. If I set the WINS server explicitly in the connection's IPv4 settings I don't have to use the FQN to ping the machine, but that doesn't change anything else. EDIT: The PC I'm having the issue on is running Win 7 Home Premium. After more testing I actually have two other PCs that work, one W7HP, one XP Home, and another Vista PC that doesn't work (not tested as much as the others), all four on the same internet connection (behind the same router). All of them were tested with a straight-forward, all defaults, new VPN configuration.

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  • Xenserver 6.2 cannot send alert using gmail smtp

    - by Crimson
    I'm using Xenserver 6.2 and configured ssmtp.conf an mail_alert.conf in order to receive alerts through email. I followed the instructions on http://support.citrix.com/servlet/KbServlet/download/34969-102-706058/reference.pdf document. I'm using gmail smtp to send the emails. When i try: [root@xen /]# ssmtp [email protected] from the command line and try to send the email, no problem. It is right on the way. But when i set some VM to generate alerts, alerts are generated. I see in XenCenter but emailing is not working. I see this in /var/log/maillog file: May 27 16:17:09 xen sSMTP[30880]: Server didn't like our AUTH LOGIN (530 5.7.0 Must issue a STARTTLS command first. 18sm34990758wju.15 - gsmtp) From command line every thing works fine. This is the log record for the above command line operation: May 27 15:55:58 xen sSMTP[27763]: Creating SSL connection to host May 27 15:56:01 xen sSMTP[27763]: SSL connection using RC4-SHA May 27 15:56:04 xen sSMTP[27763]: Sent mail for [email protected] (221 2.0.0 closing connection ln3sm34863740wjc.8 - gsmtp) uid=0 username=root outbytes=495 Any ideas?

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  • Key-Based SSH Permission denied (publickey) Ubuntu 12-04

    - by user125176
    I have configured sshd to accept key-based ssh logins with LogLevel on DEBUG, and uploaded my public key to ~/.ssh.authorized_keys, where permissions are set as: 700 ~/.ssh 600 ~/.ssh/authorized_keys From root, I can su - USERNAME. From the client I get Permission denied (publicly). From the server Here's how it is telling me that it "Could not open authorized keys '/home/USERNAME/.ssh/authorized_keys': Permission denied". Client protocol version 2.0; client software version OpenSSH_5.2 match: OpenSSH_5.2 pat OpenSSH* Enabling compatibility mode for protocol 2.0 Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1 permanently_set_uid: 105/65534 [preauth] list_hostkey_types: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256 [preauth] SSH2_MSG_KEXINIT sent [preauth] SSH2_MSG_KEXINIT received [preauth] kex: client->server aes128-ctr hmac-md5 none [preauth] kex: server->client aes128-ctr hmac-md5 none [preauth] SSH2_MSG_KEX_DH_GEX_REQUEST received [preauth] SSH2_MSG_KEX_DH_GEX_GROUP sent [preauth] expecting SSH2_MSG_KEX_DH_GEX_INIT [preauth] SSH2_MSG_KEX_DH_GEX_REPLY sent [preauth] SSH2_MSG_NEWKEYS sent [preauth] expecting SSH2_MSG_NEWKEYS [preauth] SSH2_MSG_NEWKEYS received [preauth] KEX done [preauth] userauth-request for user USERNAME service ssh-connection method none [preauth] attempt 0 failures 0 [preauth] PAM: initializing for "USERNAME" PAM: setting PAM_RHOST to "USERHOSTNAME" PAM: setting PAM_TTY to "ssh" userauth_send_banner: sent [preauth] userauth-request for user USERNAME service ssh-connection method publickey [preauth] attempt 1 failures 0 [preauth] test whether pkalg/pkblob are acceptable [preauth] Checking blacklist file /usr/share/ssh/blacklist.RSA-4096 Checking blacklist file /etc/ssh/blacklist.RSA-4096 temporarily_use_uid: 1001/1002 (e=0/0) trying public key file /home/USERNAME/.ssh/authorized_keys Could not open authorized keys '/home/USERNAME/.ssh/authorized_keys': Permission denied restore_uid: 0/0 temporarily_use_uid: 1001/1002 (e=0/0) trying public key file /home/USERNAME/.ssh/authorized_keys2 Could not open authorized keys '/home/USERNAME/.ssh/authorized_keys2': Permission denied restore_uid: 0/0 Failed publickey for USERNAME from IPADDRESS port 57523 ssh2 Connection closed by IPADDRESS [preauth] do_cleanup [preauth] monitor_read_log: child log fd closed do_cleanup PAM: cleanup

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  • Cannot connect to a VPN server - authentication failed with error code 691

    - by stacker
    When trying to connect to a VPN server, I get the 691 error code on the client, which say: Error Description: 691: The remote connection was denied because the user name and password combination you provided is not recognized, or the selected authentication protocol is not permitted on the remote access server. I validated that the username and password are correct. I also installed a certification to use with the IKEv2 security type. I also validated that the VPN server support security method. But I cannot login. In the server log I get this log: Network Policy Server denied access to a user. The user DomainName\UserName connected from IP address but failed an authentication attempt due to the following reason: The remote connection was denied because the user name and password combination you provided is not recognized, or the selected authentication protocol is not permitted on the remote access server. Any idea of what can I do? Thanks in advance! Log Name: Security Source: Microsoft-Windows-Security-Auditing Date: 12/29/2010 7:12:20 AM Event ID: 6273 Task Category: Network Policy Server Level: Information Keywords: Audit Failure User: N/A Computer: VPN.domain.com Description: Network Policy Server denied access to a user. Contact the Network Policy Server administrator for more information. User: Security ID: domain\Administrator Account Name: domain\Administrator Account Domain: domani Fully Qualified Account Name: domain.com/Users/Administrator Client Machine: Security ID: NULL SID Account Name: - Fully Qualified Account Name: - OS-Version: - Called Station Identifier: 192.168.147.171 Calling Station Identifier: 192.168.147.191 NAS: NAS IPv4 Address: - NAS IPv6 Address: - NAS Identifier: VPN NAS Port-Type: Virtual NAS Port: 0 RADIUS Client: Client Friendly Name: VPN Client IP Address: - Authentication Details: Connection Request Policy Name: Microsoft Routing and Remote Access Service Policy Network Policy Name: All Authentication Provider: Windows Authentication Server: VPN.domain.home Authentication Type: EAP EAP Type: Microsoft: Secured password (EAP-MSCHAP v2) Account Session Identifier: 313933 Logging Results: Accounting information was written to the local log file. Reason Code: 16 Reason: Authentication failed due to a user credentials mismatch. Either the user name provided does not map to an existing user account or the password was incorrect.

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  • Get-ChildItem fails to connect in SQLSERVER drive

    - by Norman Kelm
    I'm having some trouble with the SQLSERVER PSDRIVE. See error below. I only have named instances on my PC, both 2005 and 2008 Added the SQL snapins. The PC is named YODA The SQL instance is SQL2008 Navigate to the Databases folder for YODA\SQL2008. You can see the path below. dir -name spits out a connection error trying to connect to YODASQL2008\DEFAULT when it should be trying to connect to YODA\SQL2008. Then it outputs the db name which is Twitter in this case. Is there something missing from my config? Output: PS SQLSERVER:\SQL\YODA\SQL2008\Databases dir -name Get-ChildItem : SQL Server PowerShell provider error: Could not connect to 'YODASQL2008\DEFAULT'. [Failed to connect to server YODASQL2008. -- A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)] At line:1 char:4 + dir <<<< -name + CategoryInfo : OpenError: (SQLSERVER:\SQL\...tabases\Twitter:SqlPath) [Get-ChildItem], GenericProviderException + FullyQualifiedErrorId : ConnectFailed,Microsoft.PowerShell.Commands.GetChildItemCommand Twitter Repeats with error for every database. Thanks, Norman

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  • OpenVPN and TomatoVPN

    - by Bill Johnson
    Wondering if someone can help me with the following. I have updated my Linksys router with TomatoVPN and used the following config: Interface Type:TAP Protocol:UDP Port:1195 Firewall Custom Authorization Mode:Static Key I have then inserted the static key generated in OpenVPN saved and started the service. connect.ovpn. # Use the following to have your client computer send all traffic through your router # (remote gateway) remote (entered my DNS/DHCP servers external IP address here) port 1195 dev tap secret static.key.txt proto udp comp-lzo route-gateway 192.168.1.1 redirect-gateway float I've then placed my static key in a file in the same directory as your connect.ovpn (static.key.txt) Now OpenVPN is installed on a laptop that I use at home. I have plugged in the laptop to my home connection and started connect.ovpn The Local Area Connection is connected as 'Home Network 3' - and when I start OpenVPN it is connected as 'Local Area Connection 2' and this is showing as 'Unidentified Network' and it appears there is no network access. TAP-Win32 Adapter V9 appears to be the adaptors name and the IP and DNS properties are set to automatic. If I open up the OpenVPN GUI it shows an error message saying "Connecting to connect has failed". Looking at the error message behind this pop-up one line says "TCP/UDP Socket bind failed on local address [undef]:1195 Address already in use [WSAEADDRINUSE] Could anyone possibly help me further with this please?

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  • ip-up does not trigger when using built-in cisco vpn on mac osx lion

    - by Yasser Sobhdel
    I am using Cisco VPN client over lion and I want to make the ip-up and ip-down work. There is no sign of any action taken when I connect or disconnect this VPN connection. I really doubt whether the syntax has been changed or even this kind if connection is triggering the ip-up. Logically, it must be set over ppp but when using the following codes and instructions on them, there is no sign of any output in the log file: http://www.macfreek.nl/mindmaster/Modify_PPTP_Routing_Table http://www.aidanfindlater.com/use-vpn-for-specific-sites-on-mac-os-x Going for error, which there is no sign of it, using the following page: http://hints.macworld.com/article.php?story=20060616150640529 I couldn't find the /var/log/ppp/vpnd.log log file. Also the files are given full permission 0755 or a+x or even 777 using the following command: sudo chmod a+x /etc/ppp/ip-up Any clue on how to debug this would be appreciated. I am totally confused, netstat -rn -f inet doesn't show the routes. Even when the routes are added manually, closing the VPN connection does not run the ip-down and the routes must be deleted manually.

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  • RDS, RDWeb, and RemoteApp: How to use public certificate for launching apps on session host?

    - by Bret Fisher
    Question: How do i tell RDWeb to launch apps from remote.domain.com rather then host.internaldomain.local? Environment: Existing org with AD forest. New single Server 2012 running all Remote Desktop Services roles for session host. Used the new 2012 wizard to setup "QuickSessionCollection" with roles: RD Session Host RD Connection Broker RD Gateway RD Web Access RD Licensing Everything works with self-signed cert, but we want to prevent those. The users are potentially non-domain machines so sticking a private root cert for on their machines isn't an option. Every part of the solution needs to use public cert. Added public remote.domain.com cert to all roles using Server Manager GUI: RD Connection Broker - Enable Single Sign On RD Connection Broker - Publishing RD Web Access RD Gateway So now everything works beautifully except the last step: user logs into https://remote.domain.com user clicks a app icon, which in background downloads a .rdp file that is signed by remote.domain.com. .rdp is set to use RD Gateway, which is remote.domain.com .rdp says app is hosted on internal host.internaldomain.local, which doesn't match the RDP-tcp TLS cert of remote.domain.com, and pops a warning. It's this last step that I'd like to fix. Is there a config option in PowerShell, WMI, or .config to tell RDWeb/RemoteApp to use remote.domain.com for all published apps so the TLS cert for RDP matches what the Session Host is using? NOTE: This question talks about this issue, and this answer mentions how you might fix it in 2008, but that GUI doesn't exist in 2012 for RemoteApp, and I can't find a PowerShell setting for it. NOTE: Here's a screenshot of the setting in 2008R2 that I need to change. It tells RemoteApp what to use for the Session Host server name. How can I set that in 2012?

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