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  • Configure Postfix to send/relay emails Gmail (smtp.gmail.com) via port 587

    - by tom smith
    Hi. Using Centos 5.4, with Postfix. I can do a mail [email protected] subject: blah test . Cc: and the msg gets sent to gmail, but it resides in the spam folder, which is to be expected. My goal is to be able to generate email msgs, and to have them appear in the regular Inbox! As I understand Postfix/Gmail, it's possible to configure Postfix to send/relay mail via the authenticated/valid user using port 587, which would no longer have the mail be seen as spam. I've tried a number of parameters based on different sites/articles from the 'net, with no luck. Some of the articles, actually seem to conflict with other articles! I've also looked over the stacflow postings on this, but i'm still missing something... Also talked to a few people on IRC (Centos/Postfix) and still have questions.. So, i'm turning to Serverfault, once again! If there's someone who's managed to accomplish this, would you mind posting your main.cf, sasl-passwd, and any other conf files that you use to get this working! If I can review your config files, I can hopefully see where I've screwed up, and figure out how to correct the issue. Thanks for reading this, and any help/pointers you provide! ps, If there is a stackflow posting that speaks to this that I may have missed, feel free to point it out to me! -tom

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  • Port forwarding on D-Link DIR-615 super-slow, useless

    - by Jaroslav Záruba
    Hello I have replaced my old router with DIR-615 from D-Link, and now the port forwarding is so slow it makes the router practically useless for requests coming from outside of my network. Accessing the router itself (admin UI) from outside is without any issues, no delay whatsoever. But when I try to access a service residing on any of the computers in my network from outside the requests take minutes and minutes. (E.g. I can see source of my GWT-app main page, but loading additional CSS and JS files takes years.) If anyone could recommend any further diagnostics I should do to figure out what is happening it would be great. Few notes: happens with more services (web-app on Tomcat, viewing directory index via Apache) it does not make a difference whether the service is hosted on wired or wireless PC accessing the service on a localhost works fine, as does any 'inner' communication turning off firewall on target PC does not make difference either (makes sense) when I replace this router with the old one (both 192.168.1.1) everything works fine I see nothing suspicious in the router's log I believe I have the latest firmware (4.11) DIR-615 sucks, it already died once completely Regards Jarda Z.

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  • TCP: Address already in use exception - possible causes for client port? NO PORT EXHAUSTION

    - by TomTom
    Hello, stupid problem. I get those from a client connecting to a server. Sadly, the setup is complicated making debugging complex - and we run out of options. The environment: *Client/Server system, both running on the same machine. The client is actually a service doing some database manipulation at specific times. * The cnonection comes from C# going through OleDb to an EasySoft JDBC driver to a custom written JDBC server that then hosts logic in C++. Yeah, compelx - but the third party supplier decided to expose the extension mechanisms for their server through a JDBC interface. Not a lot can be done here ;) The Symptom: At (ir)regular intervals we get a "Address already in use: connect" told from the JDBC driver. They seem to come from one particular service we run. Now, I did read all the stuff about port exhaustion. This is why we have a little tool running now that counts ports and their states every minute. Last time this happened, we had an astonishing 370 ports in use, with the count rising to about 900 AFTER the error. We aleady patched the registry (it is a windows machine) to allow more than the 5000 client ports standard, but even then, we are far far from that limit to start with. Which is why I am asking here. Ayneone an ide what ELSE could cause this? It is a Windows 2003 Server machine, 64 bit. The only other thing I can see that may cause it (but this functionality is supposedly disabled) is Symantec Endpoint Protection that is installed on the server - and being capable of actinc as a firewall, it could possibly intercept network traffic. I dont want to open a can of worms by pointing to Symantec prematurely (if pointing to Symantec can ever be seen as such). So, anyone an idea what else may be the cause? Thanks

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  • Thin server : `start_tcp_server': no acceptor (port is in use or requires root privileges) (RuntimeError)

    - by Rubytastic
    My thin webserver fails to start with an error message. I can hardly find any information or leads on how to fix this, anyone an idea? thx Thin web server (v1.5.0 codename Knife) Maximum connections set to 1024 Listening on 0.0.0.0:9292, CTRL+C to stop /srv/gamers/shared/bundle/ruby/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:526:in start_tcp_server': no acceptor (port is in use or requires root privileges) (RuntimeError) from /srv/gamers/shared/bundle/ruby/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:526:instart_server' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin/backends/tcp_server.rb:16:in connect' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin/backends/base.rb:55:inblock in start' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in call' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:inrun_machine' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:187:in run' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin/backends/base.rb:63:instart' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin/server.rb:159:in start' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/handler/thin.rb:13:inrun' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/server.rb:265:in start' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/server.rb:137:instart' from /srv/gamers/shared/bundle/ruby/1.9.1/gems/rack-1.4.1/bin/rackup:4:in <top (required)>' from /srv/gamers/shared/bundle/ruby/1.9.1/bin/rackup:19:inload' from /srv/gamers/shared/bundle/ruby/1.9.1/bin/rackup:19:in `'

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  • My Ruby on Rails application only works if the address contains the port

    - by True Soft
    I have a Ruby on Rails application that works ok on my notebook ( http://localhost:3000/ ) I uploaded it on my hosting server, created with CPanel X an application, the URL is http://example.com:12007/ created a rewrite from http://example.com/ to http://example.com:12007/, and started it. If I write in my browser http://example.com:12007/ or http://www.example.com:12007/ all the pages work as expected. But if I write http://example.com/ or http://www.example.com/ the first page is displayed, but without any css or images (just like it wouldn't find them). I can see all the text (even the text from my MySQL database), but with no format. And if I click on any link, I get a error page like this: Not Found The requested URL /some_controller was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. What should I do to make my website work without writing the port in the address bar? The content of my /public_html/.htaccess file is RewriteEngine on RewriteCond %{HTTP_HOST} ^example.com$ [OR] RewriteCond %{HTTP_HOST} ^www.example.com$ RewriteRule ^/?$ "http\:\/\/127\.0\.0\.1\:12007%{REQUEST_URI}" [P,QSA,L] which I guess was generated by CPanel Rewrites.

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  • Several web applications on a single port

    - by Nevermind
    We're developing an online browser-based game. The game itself is a plugin in the web page, that uses TCP connection to a game server, and also sends http requests to "content server" web application. This makes 3 servers total: the site itself, game server and content server. Site and content server are IIS web applications, game server is a custom application communicating over TCP with proprietary protocol. While the game is in beta stage, all these servers are physically hosted on a single machine, and distinguished by ports. For example, website is game.example.com:80, game server is game.example.com:34285 and content server is game.example.com:50000. This works OK most of the time, but some of our players have ports other than 80 closed. Is there any way to make all these application work through port 80, while still having them one one physical server? Maybe using different sub-domains? There's probably a way to make IIS forward requests to different web applications based on URL alone, but that doesn't help with game server. Edit Server is Windows Server 2008, IIS 7

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  • On checking is a port open on the firewall?

    - by [email protected]
    Hi, well sometimes DBAs and sysadmin need to check if a particular port is "open" on the corporate firewall --i.e. *Grid Control* Will the communication between OMS and a management agent work? --One solution well consist on deploying the piece of software in question, start it and just check if everything works fine, however i find more classy trying to get that information beforeThere are several tools for doing so --i.e. nmap *like Trinity on The Matrix*, but just found a nice piece of code for establishing a socket on a parameter passed port.After running the program doing a telnet from the client machine  will be a walk in the park Normal 0 21 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} #include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> int main(int argc, char *argv[]) {      int sockfd, newsockfd, portno, clilen;      char buffer[256];      struct sockaddr_in serv_addr, cli_addr;      int n;      if (argc < 2) {          fprintf(stderr,"ERROR: A port must be provided. Aborting ...\n");          return 1;      }      sockfd = socket(AF_INET, SOCK_STREAM, 0);      if (sockfd < 0)          {         fprintf("ERROR: Unable to open socket. Aborting ...\n");         return 1;       }      portno = atoi(argv[1]);      serv_addr.sin_family = AF_INET;      serv_addr.sin_addr.s_addr = INADDR_ANY;      serv_addr.sin_port = htons(portno);      if (bind(sockfd, (struct sockaddr *) &serv_addr,sizeof(serv_addr)) < 0)          {               fprintf("ERROR: Unable to bind socket. Aborting ...\n");               return 1;       }      listen(sockfd,5);      clilen = sizeof(cli_addr);      newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr,&clilen);      if (newsockfd < 0)          {           fprintf("ERROR: Unable to accept connection. Aborting...\n");           return 1;        }      return 0; }Of course, you can still ask to the network guy if the port is open or notHope it helpsL

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  • Python: Socket set source port number

    - by beratch
    Hi all, I'd like to send a specific UDP broadcast packet.. unfortunatly i need to send the udp packet from a very specific port for all packet I send. Let say I broadcast via UDP "BLABLAH", the server will only answer if my incoming packet source port was 1444, if not the packet is discarded. My broadcast socket setup look like this : s = socket(AF_INET,SOCK_DGRAM) s.setsockopt(SOL_SOCKET, SO_BROADCAST, 1) How can i do that (set the source port) in python ? Thanks!

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  • Parallel port recording to file on Win XP

    - by Nikola Kotur
    Hi there. I need to write a simple program that records all the input from parallel port into a file. Data flows from industrial machine, setup is fairly simple, but I can't find any good open source examples on parallel port reading for Windows. Do you know a software that does this (and lets me learn how to do it myself), or is there any guideline for parallel port programming on XP? Thanks.

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  • Programmatically talking to a Serial Port in OS X or Linux

    - by deadprogrammer
    I have a Prolite LED sign that I like to set up to show scrolling search queries from a apache logs and other fun statistics. The problem is, my G5 does not have a serial port, so I have to use a usb to serial dongle. It shows up as /dev/cu.usbserial and /dev/tty.usbserial . When i do this everything seems to be hunky-dory: stty -f /dev/cu.usbserial speed 9600 baud; lflags: -icanon -isig -iexten -echo iflags: -icrnl -ixon -ixany -imaxbel -brkint oflags: -opost -onlcr -oxtabs cflags: cs8 -parenb Everything also works when I use the serial port tool to talk to it. If I run this piece of code while the above mentioned serial port tool, everthing also works. But as soon as I disconnect the tool the connection gets lost. #!/usr/bin/python import serial ser = serial.Serial('/dev/cu.usbserial', 9600, timeout=10) ser.write("<ID01><PA> \r\n") read_chars = ser.read(20) print read_chars ser.close() So the question is, what magicks do I need to perform to start talking to the serial port without the serial port tool? Is that a permissions problem? Also, what's the difference between /dev/cu.usbserial and /dev/tty.usbserial?

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  • Issues writing to serial port on MAC OSX using unistd.h in c

    - by Schuyler
    I am trying to write to a bluetooth device on MAC OSX using the unistd.h Linux functions in c. I am connecting fine and writing the first few bytes with success. When I try to write other commands to it (there are bytes added to the write buffer every 15ms), I don't see any results even though the write() function returns 1 (write success). If you start a write and it doesn't finish by the time you try to start another write (since it is non-blocking), could that possibly screw up the initial write? (If so, is there any way to check if a write has completed?) That is the only thing I can think of since the writes are occurring fairly frequently and the first two are successfully sent. qwbyte() simply adds a byte to the output array and increments its length The open port function: BAMid = -1; struct termios options; struct termios originalTTYAttrs; // Open the serial port read/write, nonblocking, with no controlling terminal, and don't wait for a connection. BAMid = open(strPath, O_RDWR | O_NOCTTY | O_NONBLOCK); if (BAMid == -1) { printf("Error opening serial port %s - %s(%d).\n", strPath, strerror(errno), errno); goto error; } // Issue TIOCEXCL ioctl to prevent additional opens except by root-owned processes. if (ioctl(BAMid, TIOCEXCL) == -1) { printf("Error setting TIOCEXCL on %s - %s(%d).\n", strPath, strerror(errno), errno); goto error; } // Get the current options and save them so we can restore the default settings later. if (tcgetattr(BAMid, &originalTTYAttrs) == -1) { printf("Error getting tty attributes %s - %s(%d).\n", strPath, strerror(errno), errno); goto error; } // The serial port attributes such as timeouts and baud rate are set by modifying the termios // structure and then calling tcsetattr() to cause the changes to take effect. Note that the // changes will not become effective without the tcsetattr() call. options = originalTTYAttrs; // Set raw input (non-canonical) mode, with reads blocking until either a single character // has been received or a one second timeout expires. [should be moot since we are leaving it as nonblocking] cfmakeraw(&options); options.c_cc[VMIN] = 1; options.c_cc[VTIME] = 10; cfsetspeed(&options, B57600); // Set 57600 baud options.c_cflag |= CS8; // Use 8 bit words // Cause the new options to take effect immediately. if (tcsetattr(BAMid, TCSANOW, &options) == -1) { printf("Error setting tty attributes %s - %s(%d).\n", strPath, strerror(errno), errno); goto error; } //flush old transmissions if (tcflush(BAMid,TCIOFLUSH) == -1) { printf("Error flushing BAM serial port - %s(%d).\n", strerror(errno), errno); } oBufLength = 0; // Ask it to start if (! qwbyte(CmdStart) ) { goto error; } if (! qwbyte(CmdFull) ) { goto error; } //this transmit works txbytes(); printf("success opening port!"); return -1; // Failure path error: if (BAMid != -1) { close(BAMid); } printf("returning an error--%d",errno); return errno; } The write function (txbytes): int i, bufSize, numBytes; if(oBufLength != 0) { //if the output array isn't empty //duplicating the output array and its size so it can //be overwritten while this write is occuring printf("about to transmit: "); for(i = 0; i < oBufLength; i++) { printf(" %u",oBuf[i]); tempBuf[i] = oBuf[i]; } printf("\n"); bufSize = oBufLength; oBufLength = 0; numBytes = write(BAMid, &tempBuf, bufSize); printf("bytes written = %d\n",numBytes); if (numBytes == -1) { printf("Error writing to port - %s(%d).\n", strerror(errno), errno); } return (numBytes 0); } else { return 0; }

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  • How to send a reply message to sender machine via serial port using c#

    - by karthik
    I am using the below code to receive the message via serial port which is working fine. Now i need to send back a acknowledgment message to the sender machine. How can send the message ? private void MonitorSP_DataReceived(object sender, SerialDataReceivedEventArgs e) { try { System.IO.Ports.SerialPort SP = (System.IO.Ports.SerialPort)sender; //Get the ports available in system string[] theSerialPortNames = System.IO.Ports.SerialPort.GetPortNames(); string strAvlPortNames = ""; foreach (string s in theSerialPortNames) { strAvlPortNames += s.ToString() + ", "; } //Read an contruct the message Thread.Sleep(1000); string msg = SP.ReadExisting(); string ConstructedMsg = "Port's Found : " + strAvlPortNames + "\n" + "Port Used : " + SP.PortName + "\n" + "Message Received : " + msg; if (InvokeRequired) { richTextBox1.Invoke(new MethodInvoker(delegate { richTextBox1.Text = ConstructedMsg; })); //Send acknowlegement to sender port SP.Write(SP.PortName); return; } } catch (Exception ex) { MessageBox.Show(ex.StackTrace.ToString()); } }

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  • serial port in C

    - by user222820
    I have written a program in C to send a byte to serial port (com). I have used BIOSCOM to send data but I guess that it doesn't open the port. Please tell how I can open and close a com port in C. My code is here: #define COM1 1; bioscom (1 , 65 , COM1); Please help me...

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  • timing of reads from serial port on windows

    - by Marcin K
    I'm trying to implement a protocol over serial port on a windows(xp) machine. The problem is that message synchronization in the protocol is done via a gap in the messages, i.e., x millisecond gap between sent bytes signifies a new message. Now, I don't know if it is even possible to accurately detect this gap. I'm using win32/serport.h api to read in one of the many threads of our server. Data from the serial port gets buffered, so if there is enough (and there will be enough) latency in our software, I will get multiple messages from the port buffer in one sequence of reads. Is there a way of reading from the serial port, so that I would detect gaps in when particular bytes were received?

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  • C# check if a COM (Serial) port is already open

    - by TK
    Is there an easy way of programmatically checking if a serial COM port is already open/being used? Normally I would use: try { // open port } catch (Exception ex) { // handle the exception } However, I would like to programatically check so I can attempt to use another COM port or some such.

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  • "Vidalia detected that the Tor software exited unexpectedly."

    - by Brian
    I can start and kill tor via command line, but I want to control it with Vidalia. The browser bundle works, but I'd rather not use it. This is the message log in vidalia: Sep 25 19:29:13.696 [Notice] Tor v0.2.3.22-rc (git-4a0c70a817797420) running on Linux. Sep 25 19:29:13.696 [Notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning Sep 25 19:29:13.696 [Notice] Read configuration file "/home/brian/.vidalia/torrc". Sep 25 19:29:13.697 [Notice] Initialized libevent version 2.0.16-stable using method epoll (with changelist). Good. Sep 25 19:29:13.697 [Notice] Opening Socks listener on 127.0.0.1:9050 Sep 25 19:29:13.697 [Warning] /var/run/tor is not owned by this user (brian, 1000) but by debian-tor (114). Perhaps you are running Tor as the wrong user? Sep 25 19:29:13.697 [Warning] Before Tor can create a control socket in "/var/run/tor/control", the directory "/var/run/tor" needs to exist, and to be accessible only by the user account that is running Tor. (On some Unix systems, anybody who can list a socket can connect to it, so Tor is being careful.) Sep 25 19:29:13.698 [Notice] Closing partially-constructed Socks listener on 127.0.0.1:9050 Sep 25 19:29:13.698 [Warning] Failed to parse/validate config: Failed to bind one of the listener ports. Sep 25 19:29:13.698 [Error] Reading config failed--see warnings above.

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  • Nginx ssl redirection of images

    - by krishna raj
    Hi. I am trying to set up nginx as reverse proxy for a tomcat server using SSL connection. I want the client's browser to load my tomcat application when nginx reverse proxy's IP is called from client's browser. My tomcat application's address is 192.168.25.25 and nginx proxy's address is 192.168.25.50 In my nginx.conf file i have added these lines # location / { proxy_pass https://192.168.25.25:443/myapp/; proxy_redirect https://192.168.25.25/myapp/ https://192.168.25.25/; } # Some of the images in my application is stored at 192.168.25.25/images/ . Now these directories cant be accessed as the proxy_pass is set to 192.168.25.25:443/myapp. Is there way to access images directory also without changing proxy_pass ? Thanks in advance.

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  • Exim - Sender verify failed - rejected RCPT

    - by Newtonx
    While checking on Exim's log messages I found many entries of the following message "Sender verify failed" "rejected RCPT" ... I 'm not an exim expert... I'm afraid Exim is not delivering 100% emails to recipients, because our Email Marketing Application its getting a lower OPEN RATE. Can someone helpe understand this log messages? Is it my server saying "No Such User Here" or a remote server? 174.111.111.11 represents my server IP. Thanks Exim log 2010-10-02 14:00:19 SMTP connection from myserverdomain.com.br () [174.111.111.11]:54514 I=[174.111.111.11]:25 closed by QUIT 2010-10-02 14:00:19 SMTP connection from [174.111.111.11]:54515 I=[174.111.111.11]:25 (TCP/IP connection count = 2) 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54515 I=[174.111.111.11]:25 Warning: Sender rate 672.4 / 1h 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54515 I=[174.111.111.11]:25 sender verify fail for <[email protected]>: No Such User Here 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54515 I=[174.111.111.11]:25 F=<[email protected]> rejected RCPT <[email protected]>: Sender verify failed 2010-10-02 14:00:19 SMTP connection from myserverdomain.com.br () [174.111.111.11]:54515 I=[174.111.111.11]:25 closed by QUIT 2010-10-02 14:00:19 SMTP connection from [174.111.111.11]:54516 I=[174.111.111.11]:25 (TCP/IP connection count = 2) 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54516 I=[174.111.111.11]:25 Warning: Sender rate 673.3 / 1h 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54516 I=[174.111.111.11]:25 sender verify fail for <[email protected]>: No Such User Here 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54516 I=[174.111.111.11]:25 F=<[email protected]> rejected RCPT <[email protected]>: Sender verify failed 2010-10-02 14:00:19 SMTP connection from myserverdomain.com.br () [174.111.111.11]:54516 I=[174.111.111.11]:25 closed by QUIT 2010-10-02 14:00:19 SMTP connection from [174.111.111.11]:54517 I=[174.111.111.11]:25 (TCP/IP connection count = 2) 2010-10-02 14:00:19 H=myserverdomain.com.br () [174.111.111.11]:54517 I=[174.111.111.11]:25 Warning: Sender rate 674.3 / 1h 2010-10-02 14:00:20 H=myserverdomain.com.br () [174.111.111.11]:54517 I=[174.111.111.11]:25 sender verify fail for <Luciene_souza_vasconcellos=hotmail.com--2723--bounce@e-mydomain.com.br>: No Such User Here 2010-10-02 14:00:20 H=myserverdomain.com.br () [174.111.111.11]:54517 I=[174.111.111.11]:25 F=<Luciene_souza_vasconcellos=hotmail.com--2723--bounce@e-mydomain.com.br> rejected RCPT <[email protected]>: Sender verify failed

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  • Are random packets normal?

    - by TheLQ
    About a month ago on one of my servers I started receiving random packets from IPs all over the world. So I did the smart thing and stopped putting off installing an IDS. This IDS is a ClearOS Gateway which comes with Snort and SnortSam. I enabled it, checked There is a total of 4 ports open, two of which forward to the server I'm talking about. These ports are 3724 and 8085, so they aren't going to be easily detected in a port scan. However checking some logs of this server I found that the attack is resuming. I found this ... Accepting connection from '75.166.155.122' [Auth] got unknown packet from '75.166.155.122' Accepting connection from '98.164.154.93' [Auth] got unknown packet from '98.164.154.93' Ping MySQL to keep connection alive Accepting connection from '70.241.195.129' [Auth] got unknown packet from '70.241.195.129' Accepting connection from '67.182.229.169' [Auth] got unknown packet from '67.182.229.169' Accepting connection from '69.137.140.38' [Auth] got unknown packet from '69.137.140.38' Accepting connection from '76.31.72.55' [Auth] got unknown packet from '76.31.72.55' Accepting connection from '97.88.139.39' [Auth] got unknown packet from '97.88.139.39' Accepting connection from '173.35.62.112' [Auth] got unknown packet from '173.35.62.112' Accepting connection from '187.15.10.73' [Auth] got unknown packet from '187.15.10.73' Accepting connection from '66.66.94.124' [Auth] got unknown packet from '66.66.94.124' Accepting connection from '75.159.219.124' [Auth] got unknown packet from '75.159.219.124' Accepting connection from '99.102.100.82' [Auth] got unknown packet from '99.102.100.82' Accepting connection from '24.128.240.45' [Auth] got unknown packet from '24.128.240.45' Accepting connection from '99.231.7.39' [Auth] got unknown packet from '99.231.7.39' Accepting connection from '206.255.79.56' [Auth] got unknown packet from '206.255.79.56' Accepting connection from '68.97.106.235' [Auth] got unknown packet from '68.97.106.235' Accepting connection from '69.134.67.251' [Auth] got unknown packet from '69.134.67.251' Accepting connection from '63.228.138.186' [Auth] got unknown packet from '63.228.138.186' Accepting connection from '184.39.146.193' [Auth] got unknown packet from '184.39.146.193' Accepting connection from '69.171.161.102' [Auth] got unknown packet from '69.171.161.102' Accepting connection from '76.0.47.228' [Auth] got unknown packet from '76.0.47.228' Ping MySQL to keep connection alive Accepting connection from '126.112.201.14' [Auth] got unknown packet from '126.112.201.14' Ping MySQL to keep connection alive Now that scares me. Why isn't Snort detecting this? How were they able to find this specific port? More importantly, what normally would these packets contain? Is this something I should be worried about? How can I stop this?

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  • TCP port are filtered in VirtualBox

    - by iUngi
    I'm running Ubuntu using VirtualBox to test a server application, but I couldn't get it work the communication. I used nmap to check whether the port is open or not: nmap -T4 -n vbip -p 30000 Host is up (0.00061s latency). PORT STATE SERVICE 30000/tcp filtered unknown when I'm checking the port inside the VirtualBox, than the port is open Host is up (0.00061s latency). PORT STATE SERVICE 30000/tcp open unknown I'm using bridge connection, does the VB filter the ports?

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  • Difference between a socket and a port

    - by cobie
    Could someone please explain quite clearly the difference between a port and a socket. I know that a port serves as a door into the network for an application process and that the application process uses a socket connection to the given port number to handle network communication but when you have multiple processes listening on a single port number, I am finding it difficult to understand the difference between the socket and the port and how they all fit together.

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  • Ksoap2 Error after Updating Android SDK and ADT

    - by user1291644
    I have a problem. When I updated Android SDK tool to version 17 and the ADT to 17 I can't use ksoap2 any more. I start the app and get this error: 03-25 20:13:49.995: E/AndroidRuntime(555): FATAL EXCEPTION: main 03-25 20:13:49.995: E/AndroidRuntime(555): java.lang.NoClassDefFoundError: org.ksoap2.serialization.SoapObject 03-25 20:13:49.995: E/AndroidRuntime(555): at com.alcad.pernat.praksa.SplashScreen.pridobiDanasnjo(SplashScreen.java:124) 03-25 20:13:49.995: E/AndroidRuntime(555): at com.alcad.pernat.praksa.SplashScreen.onCreate(SplashScreen.java:73) 03-25 20:13:49.995: E/AndroidRuntime(555): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 03-25 20:13:49.995: E/AndroidRuntime(555): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 03-25 20:13:49.995: E/AndroidRuntime(555): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 03-25 20:13:49.995: E/AndroidRuntime(555): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 03-25 20:13:49.995: E/AndroidRuntime(555): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 03-25 20:13:49.995: E/AndroidRuntime(555): at android.os.Handler.dispatchMessage(Handler.java:99) 03-25 20:13:49.995: E/AndroidRuntime(555): at android.os.Looper.loop(Looper.java:123) 03-25 20:13:49.995: E/AndroidRuntime(555): at android.app.ActivityThread.main(ActivityThread.java:4627) 03-25 20:13:49.995: E/AndroidRuntime(555): at java.lang.reflect.Method.invokeNative(Native Method) 03-25 20:13:49.995: E/AndroidRuntime(555): at java.lang.reflect.Method.invoke(Method.java:521) 03-25 20:13:49.995: E/AndroidRuntime(555): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 03-25 20:13:49.995: E/AndroidRuntime(555): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 03-25 20:13:49.995: E/AndroidRuntime(555): at dalvik.system.NativeStart.main(Native Method) I should get String with some numbers but instead I get this error. I was using ksoap2-2.5.4.jar and tried the new ksoap2-android-assembly-2.6.2-jar-with-dependencies.jar. I'm using Eclipse indigo, Ubuntu 11.04. The code looks like this: SoapObject Request =new SoapObject(NAMESPACE,METHOD_NAME); // Here I get the error SoapSerializationEnvelope soapEnvelope=new SoapSerializationEnvelope(SoapEnvelope.VER11); soapEnvelope.dotNet=false; String tmp=odstejDatum(datum); Request.addProperty("datumod",tmp); Request.addProperty("datumdo",datum); Request.addProperty("tip_lme",1); @SuppressWarnings("deprecation") HttpTransportSE aht=new HttpTransportSE(URL,5000); soapEnvelope.setOutputSoapObject(Request); // aht.call(SOAP_ACTION_DANASNJI,soapEnvelope); Object response= soapEnvelope.getResponse(); Thanks for the help.

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  • Listening for TCP and UDP requests on the same port

    - by user339328
    I am writing a Client/Server set of programs Depending on the operation requested by the client, I use make TCP or UDP request. Implementing the client side is straight-forward, since I can easily open connection with any protocol and send the request to the server-side. On the servers-side, on the other hand, I would like to listen both for UDP and TCP connections on the same port. Moreover, I like the the server to open new thread for each connection request. I have adopted the approach explained in: link text I have extended this code sample by creating new threads for each TCP/UDP request. This works correctly if I use TCP only, but it fails when I attempt to make UDP bindings. Please give me any suggestion how can I correct this. tnx Here is the Server Code: public class Server { public static void main(String args[]) { try { int port = 4444; if (args.length > 0) port = Integer.parseInt(args[0]); SocketAddress localport = new InetSocketAddress(port); // Create and bind a tcp channel to listen for connections on. ServerSocketChannel tcpserver = ServerSocketChannel.open(); tcpserver.socket().bind(localport); // Also create and bind a DatagramChannel to listen on. DatagramChannel udpserver = DatagramChannel.open(); udpserver.socket().bind(localport); // Specify non-blocking mode for both channels, since our // Selector object will be doing the blocking for us. tcpserver.configureBlocking(false); udpserver.configureBlocking(false); // The Selector object is what allows us to block while waiting // for activity on either of the two channels. Selector selector = Selector.open(); tcpserver.register(selector, SelectionKey.OP_ACCEPT); udpserver.register(selector, SelectionKey.OP_READ); System.out.println("Server Sterted on port: " + port + "!"); //Load Map Utils.LoadMap("mapa"); System.out.println("Server map ... LOADED!"); // Now loop forever, processing client connections while(true) { try { selector.select(); Set<SelectionKey> keys = selector.selectedKeys(); // Iterate through the Set of keys. for (Iterator<SelectionKey> i = keys.iterator(); i.hasNext();) { SelectionKey key = i.next(); i.remove(); Channel c = key.channel(); if (key.isAcceptable() && c == tcpserver) { new TCPThread(tcpserver.accept().socket()).start(); } else if (key.isReadable() && c == udpserver) { new UDPThread(udpserver.socket()).start(); } } } catch (Exception e) { e.printStackTrace(); } } } catch (Exception e) { e.printStackTrace(); System.err.println(e); System.exit(1); } } } The UDPThread code: public class UDPThread extends Thread { private DatagramSocket socket = null; public UDPThread(DatagramSocket socket) { super("UDPThread"); this.socket = socket; } @Override public void run() { byte[] buffer = new byte[2048]; try { DatagramPacket packet = new DatagramPacket(buffer, buffer.length); socket.receive(packet); String inputLine = new String(buffer); String outputLine = Utils.processCommand(inputLine.trim()); DatagramPacket reply = new DatagramPacket(outputLine.getBytes(), outputLine.getBytes().length, packet.getAddress(), packet.getPort()); socket.send(reply); } catch (IOException e) { e.printStackTrace(); } socket.close(); } } I receive: Exception in thread "UDPThread" java.nio.channels.IllegalBlockingModeException at sun.nio.ch.DatagramSocketAdaptor.receive(Unknown Source) at server.UDPThread.run(UDPThread.java:25) 10x

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