Ubuntu :: Failed To Create UDP Socket (SIP) On Port 5060 Address

Mar 13, 2010

I can't seem to get on my Twinkle SIP Phone, it says: "Failed to create a UDP Socket (SIP) on port 5060 Address already in use" after that message it brings me back to the window were I'm supposed to run my profile, how do I fix this?

View 6 Replies


Networking :: MULTICAST Address And Port - Socket Listen Only On Port?

Feb 12, 2009

I make an application on GNU/Linux which listening on a MULTICAST stream, so I open my unconnected socket, bind it on a MULTICAST address and a port, join the multicast group with the "setsockopt (IP_ADD_MEMBERSHIP)", then I receive datagram on my socket.

Now I've two different instances of the same application that run with their own MULTICAST address and port. And what I found strange is that, after a misconfiguration, I switch the ports, for example:

Emitting on and
Receiving on and

And my receiving part doesn't care about the MULTICAST address, it looks like the socket is listening on the port number only! I mean that the receiver [] take its datagrams from emitter [] and vice-versa!

View 2 Replies View Related

Programming :: Bind The Listening Socket To A Paricular Ip Address And Port?

Jun 26, 2011

I am learning network prgramming in linux in c,and try to build a server and in this server I want to bind the listening socket to a paricular Ip address and port.Bind function is showing error,I did not want to use wild card. Here is the code.



View 2 Replies View Related

Fedora Servers :: OpenVPN - Socket Bind Failed On Local Address

May 4, 2011

I finally got the certs to configure:
openvpn --config server.conf
Tue May 3 17:26:27 2011 OpenVPN 2.1.1 i686-redhat-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] built on Jan 5 2010
Tue May 3 17:26:27 2011 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Tue May 3 17:26:27 2011 Diffie-Hellman initialized with 1024 bit key
Tue May 3 17:26:27 2011 TLS-Auth MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Tue May 3 17:26:27 2011 ROUTE default_gateway=
Tue May 3 17:26:27 2011 TUN/TAP device tun0 opened
Tue May 3 17:26:27 2011 TUN/TAP TX queue length set to 100
Tue May 3 17:26:27 2011 /sbin/ip link set dev tun0 up mtu 1500
Tue May 3 17:26:27 2011 /sbin/ip addr add dev tun0 local peer
Tue May 3 17:26:27 2011 /sbin/ip route add via
Tue May 3 17:26:27 2011 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Tue May 3 17:26:27 2011 Socket Buffers: R=[114688->131072] S=[114688->131072]
Tue May 3 17:26:27 2011 UDPv4 link local (bound): [undef]:1194
Tue May 3 17:26:27 2011 UDPv4 link remote: [undef]
Tue May 3 17:26:27 2011 MULTI: multi_init called, r=256 v=256
Tue May 3 17:26:27 2011 IFCONFIG POOL: base= size=62
Tue May 3 17:26:27 2011 IFCONFIG POOL LIST
Tue May 3 17:26:27 2011 Initialization Sequence Completed

But openvpn still won't start; where to go from here.
Tue May 3 17:54:25 2011 TCP/UDP: Socket bind failed on local address Address already in use
Tue May 3 17:54:25 2011 Exiting

View 3 Replies View Related

Ubuntu :: Ssh Permission Denied (publickey) Bind To Port 22 On Failed: Address Already?

Jul 19, 2011

I'm trying to add a key public key for my dev box which is a vm running ubuntu natty, and I am unable to connect via ssh. I've tried rsa and dsa, as well as these commands:

exec ssh-agent bash
ssh-add ~/.ssh/id_rsa
ssh-add ~/.ssh/id_dsa


I think I've found the error by running sudo /usr/sbin/sshd -Dd, but I'm not sure how to fix it:

ebug1: sshd version OpenSSH_5.8p1 Debian-1ubuntu3
debug1: read PEM private key done: type RSA
debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048


View 3 Replies View Related

Ubuntu Networking :: Port Forwarding From Public Address To Private Address?

Feb 24, 2010

Currently my OS is Ubuntu 9.04 Jaunty Jackalope Desktop OS and my web server is Apache2. I have a public address 60.x.y.z and my pc local address is 10.x.y.z. I have a web app in my Apache2 which currently run in localhost(10.x.y.z).

I would like to enable the web app so that it could be browse from outside. I know there maybe some port forwarding process and some commands involved in order to do that. But I have no idea on the steps to do that.

View 5 Replies View Related

Programming :: Pass Ip Address, Port Address And Some Parameters From Command Line?

Apr 1, 2011

I want to pass ip address,port address and some parameters from command line using python script.The ip address and port address for establishing socket connection and remaining parameters to execute different connection.

View 1 Replies View Related

Networking :: Iptables Can't Port Forward (PAT Port Address Translation)?

Feb 20, 2010

I'm using a Debian servers, as router/firwall.. I've two ethernet interfaces into the server, one for wan and one for lan. The i use SNAT so my LAN clients can access the internet throgh the debian router. That is working... Now i want to be able to access servers on the LAN site from the WAN site, and i wanna use port address translation (PAT). I have a FTP server running on a lan server, so i'm trying to portward port 21.

iptables -t nat -A PREROUTING -p tcp -i eth1 -d (WANIP) --dport 21 -j DNAT --to

When people try to access my FTP from the WAN site, they are redirected to the local FTP server, and they are promted for crendentials, but when the credentials are typed, and the local ftp server should answer the wan request, the connections dies.

The wan clients are being promted for credentials, so they are redirected to the local lan server, but after that the connections dies, so i think there is some kind of nat problem, when the local lan server is trying to respond to the wan request..

Here i my iptables script:

#flush table
iptables -F
#input regler


View 6 Replies View Related

Networking :: TCP And UDP Socket On Same Port ?

Nov 20, 2009

Can we open TCP and UDP socket on same port number?

View 1 Replies View Related

Ubuntu Networking :: Error - Remote Port Forwarding Failed For Listen Port 5500

Aug 7, 2010

When I use the following command:

ssh user@ssh_server -L 5500:localhost:5500 -p 22

everything works fine. I can log in, and local port forwarding is done. Otherwise when I use the command:

ssh user@ssh_server -R 5500:localhost:5500 -p 22

I get an error "remote port forwarding failed for listen port 5500". However when I try remote port forwarding in WinXP by use of putty there is no problem...

View 2 Replies View Related

Networking :: Can't Bind Send Socket: Address Already In Use

Feb 23, 2009

I am currently trying to get a B.A.T.M.A.N mesh network up and running. the thing uses UDP port 4305 for broadcasting to nearby nodes and it seems this port is closed or used by something else.

now i have tried to open this port with commands like


iptables -A INPUT -p udp --dport 4305 -j ACCEPT
iptables -A OUTPUT -p udp --dport 4305 -j ACCEPT

it still gives me the same error saying the socket cannot connect.any way for me to scan that udp port, see what is blocking it and open the thing up ?

View 4 Replies View Related

Networking :: Raw SCTP Socket Cannot Bind With Port?

Jul 26, 2010

If I open a raw SCTP socket, am I able to bind to a specific port? (I only want to see SCTP packets from a particular IP address AND port.) Or, any raw SCTP socket, regardless of port binding , will get all SCTP packets received by the OS from that IP address? The port doesn't matter and is ignored.

View 1 Replies View Related

Programming :: Tcp Client Socket : Get Own Port Number?

Oct 1, 2010

I am working with simple tcp client to establish connection to sockaddr_in servAddress and send data segment:

connect(sockfd,&servAddr,sizeof(servAddr)) < 0)
send(sockfd, pkt, pktLen, 0);

Elementary... Here's the tricky part: next i have to handle user level ack the server is sending to "client"... To do that i have to open server socket on the same port number the system assigned to my client socket before. How can i get it ( in user level code)?

View 2 Replies View Related

Programming :: Remote Client Mac Address On Socket Descriptor?

Dec 14, 2010

I want to get the connected client MAC Address after accept() call. I can get the IP address of the client but i don't know how to get the client MAC Address in my this programme. Here I am Posting my Code.



View 10 Replies View Related

General :: Warning: Remote Port Forwarding Failed For Listen Port 7869

Jul 20, 2010

I tried to make "ssh tunneling", but failed and got this message.


Administrator@windstory-PC /
$ ssh -R 7869:localhost:7869 windowsstudy@
windowsstudy@'s password:

Warning: remote port forwarding failed for listen port 7869 Last login: Wed Jul 21 01:56:04 2010 from -bash-3.2$

1. system environment - windows 7 + copssh - centos 5.4 x86 + openssh

2. Guide for setting "ssh tunneling"


3. Added this to sshd.conf


AllowTcpForwarding yes

4. "netstat -na|grep 7869" at


[root:maestro:~]# netstat -na|grep 7869
tcp 0 0* LISTEN


5. result of "ssh -vvv -R 7869:localhost:7869 windowsstudy@"


debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password


6. I added 7869 for telnet service as follow;


mytelnet 7869/tcp # My Telnet server

View 1 Replies View Related

Networking :: Socket Programming - Connect To Port Y On IP X With Telnet

Sep 16, 2010

I have a customer who is complaining that they can connect to prt y on IP x with telnet. They are seeing the following:

telnet x.x.x.x y
Trying x.x.x.x...
Connected to x.x.x.x.
Escape character is '^]'.

after some time the connection of course times out. Connection closed by foreign host. There is no telnet service running on this port so they cannot do anything, but they are complaining tht the fact that telnet "connects" is a security risk. I am having difficulty explaining why they are able to connect with telnet. I know it has to do with the socket layer API in Linux but I am having difficulty explaining this sufficiently. I also can't just say "this is the way linux works" to them. I am looking through "UNIX Network Programming" by W.

View 3 Replies View Related

Programming :: Raw UDP Socket And ICMP Destination (Port) Unreachable?

Oct 26, 2009

I'm using a single raw socket to read UDP packets from local test network with 1024 ports. Each UDP src and dest port is unique and I need access to IP and UDP header fields. I can stream and process data (in and out) at 100 mbps in linux-rt kernel with very low jitter < 250 usec, 10 usec nominal.

I'd like to prevent kernel from issuing ICMP port unreachable errors back to the sending host, however, I don't want to create 1024 vanilla UDP sockets and bind to each one because of resource constraints. Currently, I'm using iptables to drop the outbound port unreachable messages. Does anyone know of a way (programmatic using C code) to prevent the ICMP unreachable traffic? Perhaps an IOCTL or socket option? I also tried changing /proc/sys/net/ipv4/icmp_ratelimit but that seemed to have no effect. By default the ratemask is set for dest unreachables and a variety of ratelimit values did not change any behavior that I could see.

View 5 Replies View Related

Fedora Networking :: Socket() Address Family Not Supported By Protocol

Aug 18, 2010

This message appears very often in teh output of very different programs, for example Firefox/Swiftfox, Thunderbird, Mplayer In case of Mozilla apps it sometimes freezes KDE interface too (can't switch windows or panel does not pop-up) for a few seconds. IPV6 is not compiled into kernel and module is not built. It is disabled on the eth0 interface too.

View 1 Replies View Related

Programming :: Fetch The Remote Client Mac Address On Socket Descriptor?

Dec 14, 2010

I have written one simple code which is posted here. i want to fetch the Mac Address on socket descriptor which is returned after accept () call.




View 1 Replies View Related

Programming :: Bind A PF_PACKET Socket To A Specific Port Number?

Sep 26, 2010

I am trying to create a socket to listen for a bootp response so I am using a PF_PACKET socket so that I get the response based on my mac. My problem is that I don't want to hear all traffic (as I do now) so would like to use a specific port number and bind to it.

View 1 Replies View Related

Ubuntu Servers :: Smbd. Failed To Connect To Socket?

Nov 21, 2010

I have a new install of Ubuntu 10.04.1 LTS server. But I get errormessages trying to start samba.

caesar@klem:/etc/samba$ restart smbd
restart: Unable to connect to system bus: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory

I have tride to remove an install samba. And deleted smb.conf. And startet with the original.

workgroup = Easyways
server string = %h server (Samba, Ubuntu)
log file = /var/log/samba/log.%m
max log size = 1000


View 2 Replies View Related

Debian Configuration :: Cannot Open Java Socket - Port (9955) Closed

Feb 26, 2010

I have a java application that I wrote recently. It runs off port 9955. The application runs great on my mac server. When I installed it on my linux box i cant get to it from outside the box. A port scan shows the port as closed. I flushed my iptables, did not help. I can telnet into the app locally, from the server and it works great. I cannot telnet from outside the server. I have a reference to the application in /etc/services as a tcp port (which it is).

netstat shows it as listening
netstat --listen
tcp6 0 0 [::]: SimpleSocketTest [::]:* LISTEN
netstat -anp | grep 9955
tcp6 0 0 ::: 9955 :::* LISTEN 1484/java

View 4 Replies View Related

Networking :: Fedora 11 Gnome Application Can't Connect To Socket Port 8005

Jul 3, 2009

I have an x application I am trying to run under gnome. It assumes a fixed ip address and exclusive use of the eth0. I have run it under gnome on RHEL 5.3. I set the ip address and ifconfig confirms the correct address. When I run it I get "SocketConnect() error:

Resource temporarily unavailabele, port 8005. (on the terminal that I started it)

This is indicative that it has failed to make a connection to the outside world. One difference I notice between the non-working and the working is that, the error message seems to stop coming out on the fedora gnome, almost immediately, whereas on the other installations it will come out indefinitely until it connects. is virb0 interferring. What is different in the networking on fedora 11 then RHEL?

View 2 Replies View Related

Networking :: Create The IPV6 Socket

Mar 14, 2010

I am trying to create the IPV6 socket and was wondering if anybody has any code strip which I can reuse ?

View 1 Replies View Related

Networking :: Using A Perl Script To Test For A Socket Listening On A UDP Port On A Remote Host?

Mar 10, 2011

is it possible using a perl script to test for a socket listening on a UDP port on a remote host ?I work in an environment where netcat is not allowed and from time to time I need to see if a UDP port is open on a remote host.

View 6 Replies View Related

Ubuntu :: Android And Chrooted - Mysqld Can't Create Ip Socket Permission Denied

Sep 1, 2011

I have a droid phone, and I have ubuntu 9 running on it. This is done by chrooting since the phone runs a linux kernel. And it works... I have a question though. tightvncserver does work, and its able to listen on Its how you view your X session. So you chroot to Ubuntu, then start vncserver. Then switch back to android and login to ubuntu via vnc client. but apache, mysql, and postgresql do not work. Well. They dont seem too.. except for mysql. Mysql will start but only if you tell it not to use networking by saying skip-networking in my.cnf

Mysql says: mysqld cant create ip socket permission denied Apache2 says it can find but doesnt actually run same with postgresql... All seem to be compiled with arm architecture. So why does tightvncwork? Why is it so special? How can it listen on the loop back ( when nothing else can...

I have /proc and /dev bind to the chroot side. I can run ifconfig okay, and I can run /etc/init.d/networking start okay.. But apache2, mysql, etc have problems binding. I have removed apparmor even though technically its not running, but I removed it and its configuration files, just because I thought perhaps mysql looks at apparmor, but I doubted it.

View 1 Replies View Related

Programming :: How To Create Raw Socket With Non Root User Successfully?

Jun 30, 2011

I am writing a ping kind of program for my own application. This application needs to run with non root user privileges. This needs me to create a raw socket. But the ping connection is failing because of creating raw socket with non root user.How can I run the application successfully with non root user privileges using raw socket creation?

View 4 Replies View Related

Ubuntu Servers :: SSH Error: Read From Socket Failed: Connection Reset By Peer?

Dec 8, 2010

figure out this error?

kradalby@hpcompaq6530b-laptop ~/.ssh $ ssh -vvv -p 110 kradalby@dfekt.no
OpenSSH_5.5p1 Debian-5+b1, OpenSSL 0.9.8o 01 Jun 2010


View 3 Replies View Related

Networking :: Broadcast Packets Failed To Receive - Socket Beginner

Feb 24, 2011

I am working on uClinux/almost same as Linux. I am new to socket programming. I have two micro controllers running on same code. Simple run with arguments mean send merged string.
run 1st micro controller (Send): ./Name "anystring"
run 2st micro controller (Recive):/Name

My code is:
int receive() {
// Create socket
int sock_fd;
struct sockaddr_in addr;
char buffer[kBufferSize];
int bytes_received=0;
int addr_len = sizeof(addr);
printf("receive start ");
sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
if ( sock_fd == -1 ) {
printf("receive Create ");
// Error occurred return 0; }
printf("Res Create sucee ");
// Create address from which we want to receive, and bind it
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = INADDR_ANY;
addr.sin_port = htons(kPortNumber);
if ( bind(sock_fd, (struct sockaddr*)&addr, sizeof(addr)) < 0 ) {
printf("receive bind "); // Error occurred return 0; }
printf("Bind Succeful sucee ");
while ( 1 ) {
// Receive a message, waiting if there's nothing there yet
bytes_received = recvfrom(sock_fd, buffer, kBufferSize-0, 0,
(struct sockaddr*)&addr, &addr_len);
if ( bytes_received < 0 ) { // Error occurred
printf("receive bytes "); return 0; }
printf(" bytes_received succeful ");
printf("Ressocketstring : %s ",buffer);
memset(Ressocketstring,0x00 , sizeof(Ressocketstring));
strcpy(buffer,Ressocketstring); printf("Ressocketstring : %s
",Ressocketstring); printf(" ");
printf("Hello Receive finished");
// Now we have bytes_received bytes of data in buffer. Print it!
fwrite(buffer, sizeof(char), bytes_received, stdout); } }
int transmit(char * data, int length) {
int sock_fds[kMaxSockets];
// Obtain list of all network interfaces
/* struct ifaddrs *addrs;
if ( getifaddrs(&addrs) < 0 ) {
// Error occurred return 0; } */
// Loop through interfaces, selecting those AF_INET devices that support broadcast, but aren't loopback or point-to-point
struct sockaddr_in addr; int number_sockets = 0; struct hostent *he;
/* const struct ifaddrs *cursor = addrs;
while ( cursor != NULL && number_sockets < kMaxSockets ) {
if ( cursor->ifa_addr->sa_family == AF_INET
&& !(cursor->ifa_flags & IFF_LOOPBACK)
&& !(cursor->ifa_flags & IFF_POINTOPOINT)
&& (cursor->ifa_flags & IFF_BROADCAST) ) {
// Create socket*/
sock_fds[number_sockets] = socket(AF_INET, SOCK_DGRAM, 0);
if ( sock_fds[number_sockets] == -1 ) // Error occurred {
printf("Error Create "); return 0; }
he = gethostbyname((char *)BCASTADDRESS) ;
if (he==NULL ) {printf("Error gethostbyname ");
herror("gethostbyname"); printf("Error host "); exit(1);
} printf("Res He ");
// Create address from which we want to send, and bind it
memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET;
addr.sin_addr = *((struct in_addr *)he->h_addr);//((struct sockaddr_in *)cursor->ifa_addr)->sin_addr; addr.sin_port = htons(kPortNumber);
if ( bind(sock_fds[number_sockets], (struct sockaddr*)&addr, sizeof(addr)) < 0 )
{ // Error occurred printf("Error bind "); return 0; }
// Enable broadcast int flag = 1;
if ( setsockopt(sock_fds[number_sockets], SOL_SOCKET, SO_BROADCAST, &flag, sizeof(flag)) != 0 ) // Err occur { printf("Error Enable "); return 0; }
number_sockets =1; printf("Succes 1 "); printf("transmit Create ");
// Initialise broadcast address memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET; addr.sin_addr.s_addr = INADDR_BROADCAST;
addr.sin_port = htons(kPortNumber);
// Send through each interface int i;
for ( i=0; i<number_sockets; i++ ) {
if ( sendto(sock_fds[i], data, length, 0, (struct sockaddr*)&addr, sizeof(addr)) < 0 )
{ printf("Error Send "); // Error occurred return 0;
} printf("Succes 2 "); } return 1; } void MergeMessage( ) {
",Tmeg.s1,Tmeg.s2,Tmeg.s3,Tmeg.s4,Tmeg.s5,Tm eg.s6,Tmeg.s7,Tmeg.s8,Tmeg.s9,Tmeg.s10,Tmeg.s11);
printf(" MergeSocketMessage : %s ",socketstring); }
int main (int argc, char** argv) {
int fd=0,bdc=0; struct ifreq ifr; printf("Tsarting man ");
fd = socket(AF_INET, SOCK_DGRAM, 0);
strncpy(ifr.ifr_name, "eth0", IFNAMSIZ-1);
ioctl(fd, SIOCGIFADDR, &ifr); close(fd);
strcpy(MYIP, inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr));
printf("Etho: %s ,len:%d ", MYIP,strlen(MYIP));
for(bdc=strlen(MYIP);MYIP[bdc-1]!='.';bdc--) {}
strncpy(BCASTADDRESS,MYIP,bdc-1); strcat(BCASTADDRESS,".255");
printf("BCASTADDRESS: %s ,len:%d
printf("Initial Broad Cast message "); {
/*s0"0" (id=76)
s1"500" (id=77)s2"100" (id=78)s3"100" (id=78)s4"startVD" (id=79)
s5"lighting" (id=80)s6"reading" (id=81)s7"Anna" (id=82)s8"0" (id=76)
s9"";s10"" (id=64)s11"" (id=64)*/
strcpy(Tmeg.s0,"0"); strcpy(Tmeg.s1,"500");strcpy(Tmeg.s2,"100");strcpy(Tmeg.s3,"100");
strcpy(Tmeg.s7,"anna");strcpy(Tmeg.s8,"0"); }
MergeMessage (Tmeg); if( strlen(argv[1]) ) {
if(transmit(socketstring, strlen(socketstring) ) ) {
printf(""%s" transmitted. ", socketstring); } else {
printf("Error occurred: %s ", strerror(errno)); return 1; } }
else { for( ; ; ) {
if ( argc < 2 ) // No argument: Just listen {
printf("Listening... "); if ( !receive() ) {
printf("Error occurred: %s ", strerror(errno)); return 1;
} return 0; } } } printf("Finished "); return 0;
} //////////////// .h file is /////////////
//#define WIN32_LEAN_AND_MEAN// Exclude rarely-used stuff from Windows headers
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <fcntl.h>
#include <netdb.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/ioctl.h>
#define SubLen50
//#include <ifaddrs.h>
#include <errno.h>
char MYIP[20];
typedef struct {
char s0[SubLen];
char s1[SubLen];
char s2[SubLen];
char s3[SubLen];
char s4[SubLen];
char s5[SubLen];
char s6[SubLen];
char s7[SubLen];
char s8[SubLen];
char s9[SubLen];
char s10[SubLen];
char s11[SubLen];
msg_struct Sendmsg;
msg_struct Tmeg; //Recivemsg;
Boolean pri[6];
char socketstring[SubLen*12];
char Ressocketstring[SubLen*12];
int kBufferSize = (SubLen*12);

View 2 Replies View Related

Networking :: Create A PF_PACKET Socket And Send A Frame To Another Host?

Nov 10, 2010

I'm trying to create a PF_PACKET socket and send a frame to another host, I know the destination's mac address and interface index, and I want to use my own protocol no., so I defined a PROTONO as 0x2323, here's the code of sender

#define MYPTNO 0x2323
int main(int argc, char **argv)
//struct sockaddr_inservaddr;
struct sockaddr_ll servaddr, bindaddr;


View 1 Replies View Related

Copyrights 2005-15 www.BigResource.com, All rights reserved