tcpdump and connection troubleshooting Post: 302183536

7 More Discussions You Might Find Interesting

1. Programming

How To Use tcpdump

I have two net-card. one is 172.16.24.99(ENG) ,another is 172.16.25.99(ENG-B). Both masks is 255.255.255.0. I will monitor data on the tcp port 8055 in ENG, How do I set option of tcpdump command

2. Cybersecurity

i would like to know about tcpdump

i would like to know about tcpdump i would like to use tcpdump to get information about these - Date - time - source hostname - source mac address - source ip address - destination ip address - see outbound only then i use command like this tcpdump -i le0 -n -q -tttt -e src net...

3. Solaris

Solaris 10 ftp connection problem (connection refused, connection timed out)

Hi everyone, I am hoping anyone of you could help me in this weird problem we have in 1 of our Solaris 10 servers. Lately, we have been having some ftp problems in this server. Though it can ping any server within the network, it seems that it can only ftp to a select few. For most servers, the...

4. Ubuntu

[TCPDUMP] Connection lost

I'm on Ubuntu – but it's the same on Debian. I'm using tcpdump in order to track the connection of computers on my private network. At some point, the internet connection of the computers launching the script is lost as well as the targeted computers. Here's the command line: tcpdump -i wlan0...

5. UNIX for Advanced & Expert Users

How keep running a program n an another computer via a connection ssh when the connection is closed?

Hi everybody, I am running a program on a supercomputer via my personal computer through a ssh connection. My program take more than a day to run, so when I left work with my PC I stop the connection with the supercomputer and the program stop. I am wondering if someone know how I can manage...

6. Debian

Tcpdump Help !

Hi. Need Help with TcpDump Trying to sniff associatio-request with tcpdump but when i run this tcpdump -i eth0 wlan subtype assoc-req i get this error can anyone help me with this error ? Thanks alot !!:)

7. IP Networking

TCPdump

I've recently started learning to use TCPdump, and I find it pretty interesting. There's one thing I don't understand. When I tell it to capture packets on, say, the WiFi interface en1, it often captures packets sent or received by other hosts on the network. How can it do this? My...

LEARN ABOUT DEBIAN

tcp-environ

tcp-environ(5)							File Formats Manual						    tcp-environ(5)

NAME

       tcp-environ - TCP-related environment variables

DESCRIPTION

       The  following environment variables describe a TCP connection.	They are set up by tcp-env, tcpclient, and tcpserver.  Note that TCPLOCAL-
       HOST, TCPREMOTEHOST, and TCPREMOTEINFO can contain arbitrary characters.

       PROTO
	    The string TCP.

       TCPLOCALHOST
	    The domain name of the local host, with uppercase letters converted to lowercase.  If there is no currently available domain name  for
	    the local IP address, TCPLOCALHOST is not set.

       TCPLOCALIP
	    The IP address of the local host, in dotted-decimal form.

       TCPLOCALPORT
	    The local TCP port number, in decimal.

       TCPREMOTEHOST
	    The domain name of the remote host, with uppercase letters converted to lowercase.	If there is no currently available domain name for
	    the remote IP address, TCPREMOTEHOST is not set.

       TCPREMOTEINFO
	    A connection-specific string, perhaps a username, supplied by the remote host via 931/1413/IDENT/TAP.  If the remote host did not sup-
	    ply connection information, TCPREMOTEINFO is not set.

       TCPREMOTEIP
	    The IP address of the remote host.

       TCPREMOTEPORT
	    The remote TCP port number.

SEE ALSO

       tcpclient(1), tcpserver(1), tcp-env(1), tcp(4)

																    tcp-environ(5)