01-06-2019
How to solve TCP connection timeout (not in ssh)?
HI
We have some Red Hat Linux Sevres which is having TCP connection timeout, not SSH connection, as an example oracle connection connected from TOD.
SSH i managed to add keepalive and it's working fine
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LEARN ABOUT DEBIAN
etherpuppet
ETHERPUPPET(1) BSD General Commands Manual ETHERPUPPET(1)
NAME
etherpuppet -- create a virtual interface from a remote Ethernet interface
SYNOPSIS
etherpuppet [-s port] [-c target:port] [-B] [-S] [-M filter] [-C] [-i iface]
etherpuppet [-m] [-s port] [-c target:port] [-I iface]
DESCRIPTION
etherpuppet is a small program that will create a virtual interface (TUN/TAP) on one machine from the ethernet interface of another machine
through a TCP connection. Everything seen by the real interface will be seen by the virtual one. Everything sent to the virtual interface
will be emitted by the real one.
It has been designed because one often has a small machine as his Internet gateway, and sometimes want to run some big applications that need
raw access to this interface, for sniffing (Ethereal, etc.) or for crafting packets that do not survive being reassembled, NATed, etc.
When launched with the first syntax, etherpuppet is a slave that will send to its master everything that passes on the given interface. With
the second syntax, etherpuppet is the master and will create the special TAP device (whose default name starts with puppet. In both modes,
etherpuppet is able to either connect or listen to its slave/master.
Traffic seen by the real interface is sent through the TCP connection to the doll interface. Thus, it is important that this connection is
not seen by the real interface (or else, we'll have a cute infinite traffic loop).
The options are as follows:
-s port
Listen on the given TCP port.
-c ip:port
Connect to the slave/master on the given IP/port.
-i iface
Vampirize the given interface name.
-I ifname
Choose the name of the virtual interface.
-m Master mode.
-B Do not use BPF. With this option, etherpuppet may see its own traffic.
-S Build BPF with the content of SSH_CONNECTION environment variable.
-M src:sp,dst:dp
Build manually a BPF filter that will exclude matching traffic in both directions.
-C Do not copy real interface parameters to virtual interface.
The source and destination are by default the TCP connection end points. If you go through SSH tunneling, you can use the -S option to use
SSH_CONNECTION environment variable content instead, so that you will filter out the SSH connection of your current session and not the con-
nection to the local SSH tunnel end point (which is pointless). If this still not fit your needs, you can manually specify the connection end
points with -M.
If you connect two Etherpuppet instances in master mode, you'll get a TCP tunnel through virtual interfaces.
If you connect two Etherpuppet instances in slave mode, you may get some kind of inefficient distributed bridge, but more probably, you'll
get a big mess.
AUTHORS
The etherpuppet program was written by Philippe Biondi <phil@secdev.org>.
This manual page was written by Vincent Bernat <bernat@debian.org>, for the Debian project (but may be used by others).
BSD
August 7, 2008 BSD