03-15-2013
Xinetd flags and tcp46 socket usage to telnet / ssh via v4 and v6 addresses
Hello everyone.. I need some help in understanding the usage of tcp46 socket and xinetd.d flags..
What I'm trying to do?
I'm looking to use tenet via tcp46 socket for both ipv4 and ipv6 traffic. For this, if i set flags = IPV6 xinetd.d, telnet service, i can not telnet via V4. If I unset the flags, I can only use V4 address.
Looking into how the "xinetd" understands the flags, it looks like when flags are set IPV4, we are limited to use IPV4 to use the service. Similar is the case if we set flags to IPv6. Is this true? Please correct me if my understanding is not right here.
My question: When we want to use single socket to both use v4 and v6 address, like tcp46, should we have to enable "ipv4mappedipv6" address in the system, so that even if we set xinetd's Flag to "IPV6", we can still use them? Does this sound right?
Or is there a better way to allow both v4 and v6 traffic?
Thanks for your inputs.
Sudharshan
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LEARN ABOUT OPENDARWIN
xinetd.log
XINETD.LOG(5) File Formats Manual XINETD.LOG(5)
NAME
xinetd.log - xinetd service log format
DESCRIPTION
A service configuration may specify various degrees of logging when attempts are made to access the service. When logging for a service is
enabled, xinetd will generate one-line log entries which have the following format (all entries have a timestamp as a prefix):
entry: service-id data
The data depends on the entry. Possible entry types include:
START generated when a server is started
EXIT generated when a server exits
FAIL generated when it is not possible to start a server
USERID generated if the USERID log option is used.
NOID generated if the USERID log option is used, and the IDONLY service flag is used, and the remote end does not identify
who is trying to access the service.
In the following, the information enclosed in brackets appears if the appropriate log option is used.
A START entry has the format:
START: service-id [pid=%d] [from=%d.%d.%d.%d]
An EXIT entry has the format:
EXIT: service-id [type=%d] [pid=%d] [duration=%d(sec)]
type can be either status or signal. The number is either the exit status or the signal that caused process termination.
A FAIL entry has the format:
FAIL: service-id reason [from=%d.%d.%d.%d]
Possible reasons are:
fork a certain number of consecutive fork attempts failed (this number is a configurable parameter)
time the time check failed
address the address check failed
service_limit the allowed number of server instances for this service would be exceeded
process_limit a limit on the number of forked processes was specified and it would be exceeded
A DATA entry has the format:
DATA: service-id data
The data logged depends on the service.
login remote_user=%s local_user=%s tty=%s
exec remote_user=%s verify=status command=%s
Possible status values:
ok the password was correct
failed the password was incorrect
baduser no such user
shell remote_user=%s local_user=%s command=%s
finger received string or EMPTY-LINE
A USERID entry has the format:
USERID: service-id text
The text is the response of the identification daemon at the remote end excluding the port numbers (which are included in the response).
A NOID entry has the format:
NOID: service-id IP-address reason
SEE ALSO
xinetd(1L), xinetd.conf(5)
28 April 1993 XINETD.LOG(5)