[lug] Socket Error

[David]

> Someone else mentioned use of telnet to test for service. If you telnet
> to the X11 port, and it is summarily dropped, without any connection at
> all, versus having a connection and then being rejected after typing in
> some nonsense, you will know whether it is lack of tcp/ip or if it is
> authentication. The port you are interested in is 6000 (also good to
> monitor with tail -f /var/log/messages, plus the X11 log itself,
> /var/log/XFree86.0.log). Simply try (adjust localhost or ip address):
> telnet localhost 6000
This is what I got.  Nothing in messages (except see at the end)

Rednose dajo ~ telnet localhost 6000
Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
garbage        <- I type
garbage        <- it gives
more garbage   <- I type
more garbage   <- it gives
Connection closed by foreign host.
Rednose dajo ~ 

> Does it allow you to connect and type nonsense, or does it drop you
> without the ability to connect at all? Summarily dropping you indicates
> nothing is listening for tcp/ip there. Allowing you in but dropping you
> after typing nonsense indicates you are likely working with
> authentication failure. Authentication is a big can of worms, but you
> can try this for each host (use command line so it isn't permanent) you
> might need the X display to allow connections from:
> xhost +
> (without any url after the '+' should open it to all)
> Alternatively:
> xhost +127.0.0.1
> (or adjust to a real outside address...can do more than one)
> 
> D. Stimits, stimits at idcomm.com

Boy, I really thought that you were on to something, but it does not
work.
Rednose dajo ~ xhost
access control enabled, only authorized clients can connect
INET:localhost.localdomain
INET:Rednose.Anthrax

Extra bit:
I did get two kernel messages (two more literally while I was typing
this).  I do not know what all the fields are; are these "enquiries"
from "friends" on the net?
Aug 23 13:29:14 Rednose pppd[1785]: Connect: ppp0 <--> /dev/modem
Aug 23 13:29:29 Rednose pppd[1785]: local  IP address 216.17.156.54
Aug 23 13:29:29 Rednose pppd[1785]: remote IP address 216.17.156.226
Aug 23 14:09:46 Rednose ipchains: Flushing all current rules and user defined chains: succeeded
Aug 23 14:09:46 Rednose ipchains: Clearing all current rules and user defined chains: succeeded
Aug 23 14:09:46 Rednose ipchains: Applying ipchains firewall rules succeeded
Aug 23 14:20:05 Rednose kernel: Packet log: input REJECT ppp0 PROTO=6 216.17.175.194:4618 216.17.156.54:113 L=60 S=0x00 I=39517 F=0x4000 T=58 SYN (#4)
Aug 23 14:35:11 Rednose kernel: Packet log: input REJECT ppp0 PROTO=6 216.17.175.194:1472 216.17.156.54:113 L=60 S=0x00 I=36919 F=0x4000 T=58 SYN (#4)
Aug 23 14:48:16 Rednose kernel: Packet log: input REJECT ppp0 PROTO=6 211.161.246.245:4261 216.17.156.54:8080 L=48 S=0x00 I=3024 F=0x4000 T=109 SYN (#4)
Aug 23 14:48:18 Rednose kernel: Packet log: input REJECT ppp0 PROTO=6 211.161.246.245:4261 216.17.156.54:8080 L=48 S=0x00 I=3125 F=0x4000 T=109 SYN (#4)

dajo