HELP: Frustrating Linux console freezing.

HELP: Frustrating Linux console freezing.

Post by Josep » Sat, 02 Mar 2002 06:25:23



Hi all,

today, I trully need help, before I take a hammer and go gates crazy on
the linux box.

I'm got a trully odd problem I can't get my hands on. Running Redhat 7.2
with all the lastest bugfixes, and security fixes. I'm running the Linux
box as a 'firewall' NAT server for my internal network with Roaring
pengiun PPPoE and I'm using IPtables, using to network cards.

The Problem, In I telnet into, (via internet and thru PPPoE DSL)
to the box, and produce a command with more than 200 bytes of output
the console freezes.

Example, "ls" will work, "ls -al" kills me... I don't get any output, just
that the control freezes.

I've tried SSH and same scenerio. So its not the telnetd (daemon).
I've tried different shells, same issue.

However, on my internal network, from another old linux box, I don't
expereience any problems. Only from remote internet connections.

Can it be IPTables??? I don't think its roaring pengiun PPPoE.

I haven't tried IPChains, I kinda wanted to use IPTables, but I'm
wondering if _anyone_ has experienced the same problem?

Thanx.

--
#!/usr/local/bin/perl -- -pwcracker-in-3-lines-of-perl-plus-disclaimer

{printf "u=%s p=%s\n",$u{$c},$_ if(crypt($_,$c) eq $c);}} # Use: pwc dict ...

 
 
 

HELP: Frustrating Linux console freezing.

Post by Karl Heye » Sat, 02 Mar 2002 06:25:51



> However, on my internal network, from another old linux box, I don't
> expereience any problems. Only from remote internet connections.

> Can it be IPTables??? I don't think its roaring pengiun PPPoE.

> I haven't tried IPChains, I kinda wanted to use IPTables, but I'm
> wondering if _anyone_ has experienced the same problem?

so the machine itself doesn'r crash!.  The internal interface responds
ok, does the external still respond, ie does it allow further
connections.

can you try lowering the MTU, check ifconfig for the current value.
check the docs for PPPoE for setting that

karl.

 
 
 

1. Freeze freeze freeze..

I have two problems that really suck.
The first is:
I can run dip and get my slip connection working, but when someone tries
to telnet into my machine, it either gives them...

Trying 128.193.5.41...
Connected to 128.193.5.41.
Escape character is '^]'.
Connection closed by foreign host.

or it gives them the login, and you can proceed to login.
The first time it dosn't give them the log in or anything, just
connection closes on them.
Sometimes when I start linux people can't log in at all, and other times
it works fine. Other times it dosn't work at first then you might try
back again and it will work. It dosn't matter if you use the ip# or the
name address.

My second problem is:

Stupid think FREEZES!
Everytime I start up linux and get on my slip, it will freeze after about
5 minutes. There are no messages and no warnings, it just freezes and I
can't do anything.

Please reply if you have any ideas what the hell is wrong!

Thanks in advance.

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