01-13-2004
Listening on port for incoming data?
I am not what I would call an experienced programmer.
I know some ksh etc..
I need to be able to listening on a port for incoming data on a ultra 10 using solaris 9. Basically all that I need to do at the moment is to log the incoming data on a specific port number.
Any ideas on how I can get started on this?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
Im programming a perl script which will act as a daemon listening on a tcp port (2323) and will take (<stdin>) from the client (im going to use telnet) and run the arguments from (<stdin>) against an program already on the server, which is used to list books in the library at uni.
So far... (1 Reply)
Discussion started by: emcb
1 Replies
2. IP Networking
Hi..
I am using HPux11.0
i want to know if server not listening to a tcp port what should we do to resolve the problem....
in /etc/services tcp port 7108/tcp is mentioned for some perticular application..
while starting that application error is coming could not establish
listening address... (1 Reply)
Discussion started by: Prafulla
1 Replies
3. Linux
Hi All,
I'm running RH 9.0 on a PII box with 160MB RAM. Just downloaded RealVNC X86 Linux (version 3.3.7). How can I get the HTTP listening port up ?
Thanks,
KENT (6 Replies)
Discussion started by: kxchen_home
6 Replies
4. Programming
Hi all,
In need to know why my sample code below that connect to a rlogind (513) fails, but original unix rlogin does not ? (.rhosts is verified to be correct)
I heard rlogin/rsh bind to a reserved port before connecting to the rlogin server. what are they ???
s = socket(AF_INET,... (1 Reply)
Discussion started by: andryk
1 Replies
5. AIX
Hi all, can anyone help me with this?
I'm running AIX 5L v5.3 base and installed CDE is 1.0. I've seen recommendations to add "-nolisten tcp" to the args for X but anytime I try that it simply fails to start. I've tried adding it as an arg to /usr/dt/config/Xservers as well as trying to add it... (0 Replies)
Discussion started by: AIXNewbie
0 Replies
6. Shell Programming and Scripting
On my VPS server I have a port that is open and is listening for a 'status' command when you connect to it to like so...
$ telnet host 1900
Trying host...
Connected to host.
Escape character is '^]'.
status
QMAIL;OK
APACHE;OK
HTTPD;OK
CRON;OK
Wondering if what command I can attempt... (2 Replies)
Discussion started by: phpfreak
2 Replies
7. Cybersecurity
Hi Pals
Consider a case where the network interface is there and it is connected to a network.
Only thing left here is I need to set a static ip/ip though dhcp (though ifconfig)
I heard that it is possible to listen even if the ip address is not set. So is there any possibility of an attack over... (1 Reply)
Discussion started by: sreejithc
1 Replies
8. HP-UX
Hi,
I have an application running on HP-UX, from this application I need to findout if the port number. lets say 7890,7891, 7892 are listening on the remote server running on HP-UX.
Is there any way of doing it using "system()" function or any other?
I noticed that nmap, netcat are not... (0 Replies)
Discussion started by: einsteinBrain
0 Replies
9. IP Networking
Hi,
I have an executable running on HP-UX, from this executable I need to findout if the portnumber. lets say 7890,7891, 7892 are listening on the remote server running on HP-UX.
I can do it by creating socket, connect etc. But is there any other way of doing it using "system()" function or... (3 Replies)
Discussion started by: einsteinBrain
3 Replies
10. AIX
Hello,
I was trying to find information about below rpcbind issue and how can I fix it so that, it wont happen again.
Below is the one of the vulnerability from my security team,
RPC
service name: portmapper
service protocal: udp
Portmapper found at: 327xx
service port: 327xx
... (2 Replies)
Discussion started by: system.engineer
2 Replies
UDP(4) BSD Kernel Interfaces Manual UDP(4)
NAME
udp -- Internet User Datagram Protocol
SYNOPSIS
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
int
socket(AF_INET, SOCK_DGRAM, 0);
DESCRIPTION
UDP is a simple, unreliable datagram protocol which is used to support the SOCK_DGRAM abstraction for the Internet protocol family. UDP
sockets are connectionless, and are normally used with the sendto(2) and recvfrom(2) calls, though the connect(2) call may also be used to
fix the destination for future packets (in which case the recv(2) or read(2) and send(2) or write(2) system calls may be used).
UDP address formats are identical to those used by TCP. In particular UDP provides a port identifier in addition to the normal Internet
address format. Note that the UDP port space is separate from the TCP port space (i.e., a UDP port may not be ``connected'' to a TCP port).
In addition broadcast packets may be sent (assuming the underlying network supports this) by using a reserved ``broadcast address''; this
address is network interface dependent.
Options at the IP transport level may be used with UDP; see ip(4).
MIB VARIABLES
The udp protocol implements a number of variables in the net.inet branch of the sysctl(3) MIB.
UDPCTL_CHECKSUM (udp.checksum) Enable udp checksums (enabled by default).
UDPCTL_MAXDGRAM (udp.maxdgram) Maximum outgoing UDP datagram size
UDPCTL_RECVSPACE (udp.recvspace) Maximum space for incoming UDP datagrams
udp.log_in_vain For all udp datagrams, to ports on which there is no socket listening, log the connection attempt (disabled by default).
udp.blackhole When a datagram is received on a port where there is no socket listening, do not return an ICMP port unreachable message.
(Disabled by default. See blackhole(4).)
ERRORS
A socket operation may fail with one of the following errors returned:
[EISCONN] when trying to establish a connection on a socket which already has one, or when trying to send a datagram with the desti-
nation address specified and the socket is already connected;
[ENOTCONN] when trying to send a datagram, but no destination address is specified, and the socket has not been connected;
[ENOBUFS] when the system runs out of memory for an internal data structure;
[EADDRINUSE] when an attempt is made to create a socket with a port which has already been allocated;
[EADDRNOTAVAIL] when an attempt is made to create a socket with a network address for which no network interface exists.
SEE ALSO
getsockopt(2), recv(2), send(2), socket(2), blackhole(4), inet(4), intro(4), ip(4)
HISTORY
The udp protocol appeared in 4.2BSD.
BSD
June 5, 1993 BSD