05-12-2008
So on those hosts which you connect to, can you resolve the IP addresses of these two servers? This is just a tangent but I've found that some sites are set up to try reverse DNS, and take a lot of time if it doesn't work. ident would be another thing to look for -- do you have an ident daemon running on one host, but not on the other?
You are saying you can ping by IP address from the OK host, but not from the broken one? That would rule out anything like this. But then you shouldn't be able to traceroute either ...?
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IDENT(8) InterNetNews Documentation IDENT(8)
NAME
ident - nnrpd ident resolver
SYNOPSIS
ident [-p port] [-t]
DESCRIPTION
This program attempts to resolve usernames for nnrpd by using the ident protocol to query the remote host. It contacts the remote host
using either IPv4 or IPv6 depending on which protocol was used for the incoming NNTP connection.
OPTIONS
-p port
If this option is given, attempt to contact identd on the specified remote port (which can be a numeric or symbolic specification).
Non-numeric values will be looked up using getservbyname(3). The default value is the result of "getservbyname("ident")" if available,
or port 113 otherwise.
-t If this option is given, the identity returned will never have a domain part. That is, if the remote server returns a result
containing an "@" character, ident truncates the response at the "@". This is useful to allow the default-domain parameter in
reaers.conf to override the domain supplied by the remote host (particularly if the supplied domain part is an unqualified local
machine name rather than a full domain name).
EXAMPLE
The following readers.conf(5) fragment tells nnrpd to trust ident information for hosts on a local network, but to replace the domain
returned from the ident query:
auth LAN {
hosts: "192.168/16"
res: "ident -t"
default-domain: "internal.example.com"
}
access LAN {
users: "*@internal.example.com"
newsgroups: example.*
}
Access is granted to the example.* groups for all users on the local network whose machines respond to ident queries.
HISTORY
This documentation was written by Jeffrey M. Vinocur <jeff@litech.org>.
$Id: ident.pod 8200 2008-11-30 13:31:30Z iulius $
SEE ALSO
nnrpd(8), readers.conf(5)
INN 2.5.2 2009-05-21 IDENT(8)