11-21-2007
Ah, telnet clarifies things a fair bit.
If you can find a version of lsof for it you can use this to find the IP. Otherwise, I like sysgate's point that the IP will be in the logs at time of connection. So you can run the output of who through a grep of the logs (for the username and a login message), then tail off the last entry to get the IP.
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ypset(1M) ypset(1M)
NAME
ypset - bind to particular Network Information Service server
SYNOPSIS
host] domain] server
Remarks
The Network Information Service (NIS) was formerly known as Yellow Pages (YP). Although the name has changed, the functionality of the
service remains the same.
DESCRIPTION
tells to get Network Information Service (NIS) services for the specified domain from the process running on server (see ypserv(1M) and
ypbind(1M)). server is the NIS server that the NIS client binds to, and is specified as either a host name or an IP address. If server is
down or is not running this is not discovered until a local NIS client process tries to obtain a binding for the domain. The daemon then
tests the binding set by If the binding cannot be made to the requested server, attempts to rebind to another server in the same domain
present in the ypservers file.
NOTE: In order to run must be initiated with the or options. For more information on how to initiate see ypbind(1M).
The command is useful for binding a client node that is not on a broadcast network. If a client node exists on a broadcast network which
has no NIS server running, and if there is a network with one running that is available via a gateway, can establish a binding through that
gateway. It is also useful for debugging NIS client applications such as when a NIS map exists only at a single NIS server.
In cases where several hosts on the local net are supplying NIS services, it is possible for to rebind to another host, even while you
attempt to find out if the operation succeeded. For example, typing followed by and receiving the reply may be confusing. It could occur
when host1 does not respond to because its process is not running or is overloaded, and host2, running gets the binding.
The server is the NIS server to bind to, specified as either a host name or an IP address.
Refer to ypfiles(4) and ypserv(1M) for an overview of the Network Information Service.
Options
recognizes the following options and command-line arguments:
Bind server for the Version 2 NIS protocol.
Set the binding on
host instead of locally. host can be specified as a host name or an IP address.
Use domain instead of the default domain returned by (see domainname(1)).
DIAGNOSTICS
The user is not root, or ypbind was run without the
flags. See ypserv(1M) for explanations of the flags.
The user is not root, or ypbind was run without one of the
flags. See ypserv(1M) for explanations of the flags.
WARNINGS
Starting with ONCplus version B.11.31.02, the NIS Version 1 protocol is no longer available.
AUTHOR
was developed by Sun Microsystems, Inc.
SEE ALSO
domainname(1), ypwhich(1), ypserv(1M), ypfiles(4).
ypset(1M)