09-20-2012
It'd just be a normal reverse-DNS lookup, asking a DNS server what domain name has that IP. Where it asks first depends on your configuration.
10 More Discussions You Might Find Interesting
1. IP Networking
Giving netstat command on the prompt gives commands such as
localhost.43592 localhost.35237 32768 0 32768 0 TIME_WAIT
localhost.43594 localhost.43595 32768 0 32768 0 TIME_WAIT
localhost.43598 localhost.35237 32768 0 32768 0 TIME_WAIT... (6 Replies)
Discussion started by: DPAI
6 Replies
2. Linux
Hi everybody, i need help regarding my Linux start up.I was trying to configure internet connection with my Red Hat in order to use for Internet,but of no avail and I think I have changed one parameter to activate device during computer start up.
Now the problem is during start up and... (1 Reply)
Discussion started by: andysastre
1 Replies
3. SuSE
this may be something trivial to many of you, but is there a way to purposely cause a process to hang? (6 Replies)
Discussion started by: laila63
6 Replies
4. Red Hat
Hello,
I am having a HP proliant 350 G3 sever installed wih RedHat linux 9.0
when I enterd using any user(Except root) the server hanged after few seconds, also the folder icons are blacked out and the names of the folder icons are disapper.
can any body help me.
Ajay (1 Reply)
Discussion started by: ajay234
1 Replies
5. Shell Programming and Scripting
Im making a script that goes out to about 200 servers and grabs log files daily and need to make sure the script gets all the servers it can even if one is out. I am ftp'ing the files over but if i cant connect to the server the process looks like it dies and the script is finished. (4 Replies)
Discussion started by: rcunn87
4 Replies
6. AIX
Why is one of my blade hanging and does nothing after trying to boot from CD???
==================
I tried to press 1....JS20 does not support SMS menu
Here's what I see after 30 minutes...
-------------------------------------------------------------------------------
... (0 Replies)
Discussion started by: mifch
0 Replies
7. Shell Programming and Scripting
Hi guys sorry for my English I am from GREECE and I speak from translator.I have in my school work to hang the program I've done is this
encounter the problems is that the meter that I have put on the mistakes does not work (I have not stated anywhere lathi = 0, not to reset the meter at each of... (1 Reply)
Discussion started by: soula
1 Replies
8. Solaris
Greetings to all,
Here is a line of output from my netstat command
cbp031.904 wdcprodhome.nfsd 98304 0 49640 0 ESTABLISHED
The only thing i recognize is the unix machine "cbp031" but what is .904 and all the other data telling me?
Thanks in advance. (3 Replies)
Discussion started by: Harleyrci
3 Replies
9. UNIX for Advanced & Expert Users
Hi,
I want to list the time for how long a secure connections last to my server/blade. i am using netstat command to get the same, but not sure how to get the time for how long connections is being ESTABLISHED.
netstat -na | grep 'ESTABLISHED' | grep :443 |awk '{print $4}' | cut -d: -f1 |... (1 Reply)
Discussion started by: Siddheshk
1 Replies
10. Solaris
Hi guys,
I'm new with solaris.
I just received sunfire T2000 server.
Problem:
ALOM keep hang/stuck/jammed.
Steps do before it hang :
1. Connect to T2000 (using RJ45 - DB9 cable)
2. Open putty, connect via serial.
3. Power on the server.
4. Its loading.
5. then, hang.
... (1 Reply)
Discussion started by: rajasraf
1 Replies
LEARN ABOUT DEBIAN
dns2tcpc
dns2tcpc(1) General Commands Manual dns2tcpc(1)
NAME
dns2tcpc - A tunneling tool that encapsulate TCP traffic over DNS.
SYNOPSIS
dns2tcpc [ -h ] [ -c ] [ -z domain zone ] [ -d debug_level ] [ -r resource ] [ -k key ] [ -f config_file ] [ -e command ] [ -T request type
] [ -l local_port ] [ server ]
DESCRIPTION
dns2tcpc is a network tool used to encapsulate TCP communications in DNS. When connections are received on a specific port all TCP traffic
is sent to the remote dns2tcpd server and forwarded to a specific host and port. Multiple connections are supported.
dns2tcpc was written for demonstration purposes.
OPTIONS
-h Help Menu
-c Enable DNS compression. When used, be sure that all relay and DNS server support compression and really use it.
-z domain zone
Use this domain as endpoint.
-d debug level
Change debug level. Levels available are 1, 2 or 3.
-r resource
Remote resource to access.
-k key Pre shared key used for authentication (identification).
-f config file
Configuration file to use.
-T request type
Request type to use. Actually only KEY and TXT requests are supported.
-e command
Command to execute, I/O are redirected in the tunnel.
-l local_port
Local port accepting incomming connections (or - for stdin on UNIX systems).
-t connection timeout
Maximum DNS server's answer delay in seconds. A valid delay is between 1 and 240 seconds. Default is 3.
server DNS server to use. The first entry in resolv.conf file will be choosen if the server is not specified.
CONFIGURATION FILES
By default ${HOME}/.dns2tcprc is used if no configuration file is specified. Here is an example :
domain = dns2tcp.hsc.fr
resource = ssltunnel
local_port = 4430
enable_compression = 0
debug_level = 1
key = mykey
# DNS to use
server = ns.hsc.fr
EXAMPLES
dns2tcpc -k mykey -z dns2tcp.hsc.fr mydns
Ask the dns2tcp server to list available resources.
ssh -o 'ProxyCommand dns2tcpc -r ssh -l - -z dns2tcp.hsc.fr -k mykey mydns' myserver
Use dns2tcp as a proxy command with ssh. We try to connect to the ssh resource with the key 'mykey' and the DNS mydns.
dns2tcpc -r socat-resource -e '/bin/bash -i' -k mykey -z dns2tcp.hsc.fr mydns
Use dns2tcp as a reverse shell, the remote shell will appear on the socat-resource.
dns2tcpc -d 1 -f /dev/null -r ssl-tunnel -l 2000 -k mykey -T KEY -z dns2tcp.hsc.fr mydns
Do not use the default configuration file, bind local port 2000 and forward all the traffic on the remote ssl-tunnel resource, use
the first debug level. Use KEY type DNS requests.
AUTHORS
Olivier Dembour <olivier.dembour@hsc.fr>
SEE ALSO
ssltunnel
dns2tcpc(1)