Users are connecting thru a KCML Client to UNIX machine, and I want to know which TCP/UDP port that client uses? How can I check the port of a user logged in?
Can you specify the question please as there are standard and ephemeral ports on client and server? Which one you have in mind the port for default incoming/outgoing connection or a port for an actual connection?
Actually, I want to know the port where the remote party is coming from. Any ways, I checked my syslog after logging in from the same client and found the following:
Code:
May 17 15:53:43 unix1 in.telnetd[10742]: connect from AGB
It means my KCML client, comes thru telnet(TCP port 23), I forwarded this port 23 from my router to UNIX box(for Remot users i.e. comming from the internet), it reaches UNIX because I can see its log in syslog. But client gets "Host refused connection". There is no problem for the connections comming from local subnet or from the subnets for routes are already added. I checked my /etc/inetd.conf file and found following there:
So this is not the problem either, as well as hosts.allow has the entry to allow telnet comming from unknown host. I tried to telnet UNIX box from the Internet, but no luck. My default gateway is set properly also and system accepts connections from VPN without any problem, so there is no problem for the connections from unknown hosts.
And I don't know also where system logs the record of rejected connections. I'm totally blank here. Any idea.....
i want to kill a tcp connection by killing its pid
with netstat -an i got the tcp ip connection on port 5914
but when i type ps -a or ps-e there is not such process running on port 5914
is it possible that because i do not log on with proper user account i can not see that process running? (30 Replies)
Hi.
I am writing client - server application using TCP sockets.
I need some very basic functionality, namely: how to check if another "participant" of the connection is still present?
I want to handle situations, when client is gone, or server breaks down, etc. (25 Replies)
May I know what is the TCP/UCP port range for any default AIX NFS? Based on rpcinfo -p, I got the following output:
program vers proto port service
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
100000 4 ... (4 Replies)
hi guys
My linux server have SNMP configure port by default is 161 (UDP)
now my monitor team - who are using Nagios - say the server are not being monitor
so check netstat -lnu and I see all is OK and snmp service is running fine
what else should I check about this port 161? to see if it is... (0 Replies)
I use forwarders for a subzone, but TCP 53 is blocked, So does forwarders really need TCP?
If forwaders use UDP, I can't get following scenario to work:
main zone is master, but subzone is forwad. Is it possible?
(On name sever itself, resolution of xx.stub.abc.com worked fine.)
#sub zone... (2 Replies)
Hi,
My network dep. telles me that they have opened the FW but my application still can not get through to other server. If it was TCP I could simply test it myself with "telnet", but how can I check it when the connection is UDP?
Tnx (1 Reply)
3600 tcp/udp, trap-daemon, text relay-answer
Does anyone know what this service is responsible for, or how significant it is?
Thanks.....James (1 Reply)
Just wondering if anyone knows of any good on-line documentation on TCP/UDP Ports. Basically i want to know how to check if they are in use, learn how to close them, etc...
Thanks... (5 Replies)
Just starting to work with unix, wondering if there is any good on-line documentation explaining TCP/UDP ports, how to use them, etc...
Thanks.... (1 Reply)
