Re: Port 113 (auth) accept or deny?

2002-02-09 Thread Jakub Jankowski
On 2002-02-09, Brandon High wrote:

>> >> should I open(accept) or close(deny, perhaps reject?) the port 113???
[...]
>I just don't know what you might need the ident server for.

That's why you should read that thread. It was explained there several
times, IIRC.

s.

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Re: Port 113 (auth) accept or deny?

2002-02-09 Thread Jakub Jankowski
On 2002-02-09, Brandon High wrote:

[...]
>> should I open(accept) or close(deny, perhaps reject?) the port 113???
>
>I've got it closed on my machines. I don't know what you might need it
>for.

We've been through at least once, haven't we? *sigh*

Please read the whole thread:
http://lists.debian.org/debian-security/2001/debian-security-200108/msg00297.html

s.

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Re: Port 113 (auth) accept or deny?

2002-02-09 Thread Jakub Jankowski

On 2002-02-09, Brandon High wrote:

>> >> should I open(accept) or close(deny, perhaps reject?) the port 113???
[...]
>I just don't know what you might need the ident server for.

That's why you should read that thread. It was explained there several
times, IIRC.

s.

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Re: Port 113 (auth) accept or deny?

2002-02-09 Thread Jakub Jankowski

On 2002-02-09, Brandon High wrote:

[...]
>> should I open(accept) or close(deny, perhaps reject?) the port 113???
>
>I've got it closed on my machines. I don't know what you might need it
>for.

We've been through at least once, haven't we? *sigh*

Please read the whole thread:
http://lists.debian.org/debian-security/2001/debian-security-200108/msg00297.html

s.

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Layne (was: Re: Is ident secure?)

2001-08-31 Thread Jakub Jankowski
On 2001-08-31, Layne wrote:

>SEND ME NO MORE E-MAIL YOU SPERM BURPING GUTTER SLUT. FUCK YOU.

 Couldn't list-admins blackhole this moron? Please? :)

 shasta

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Layne (was: Re: Is ident secure?)

2001-08-31 Thread Jakub Jankowski

On 2001-08-31, Layne wrote:

>SEND ME NO MORE E-MAIL YOU SPERM BURPING GUTTER SLUT. FUCK YOU.

 Couldn't list-admins blackhole this moron? Please? :)

 shasta

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Re: strangelog

2001-08-12 Thread Jakub Jankowski
On 2001-08-12, Rudy Gevaert wrote:

>This weekend I got a strange log:
[...]
>Aug 11 06:25:03 alhandra su[3584]: + ??? root-nobody
>Aug 11 06:25:03 alhandra PAM_unix[3584]: (su) session opened for user
>nobody by
>+(uid=0)
[...]
>I'm sure I was asleep at that time... What is this?  Did someone log in?

 Nope, noone logged in.

>Or was it a service who su'ed? (I doubt it).

 It was one of your cron jobs, I suppose.

 Jakub.

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Re: auth.log

2001-06-20 Thread Jakub Jankowski
On 2001-06-20, Matthias Fritschi wrote:

> > Jun 20 06:25:02 blacksun su[2095]: + ??? root-nobody
> > Jun 20 06:25:02 blacksun PAM_unix[2095]: (su) session opened for user 
> > nobody by (uid=0)
>
>could that mean somebody got into the server using a security leak in
>a process running as nobody? at this time, i was still sleepeing
[...]

 No. It means that some process running with root privileges switched
its uid to nobody's. There is some cron job executed at 6:25am
probably, this is the most common reason of 'automatic' su'ing from
root to nobody. Look for files containing string "25 6 *" somewhere
under /var. Their contents should explain you many things.

 I hope it'll help.

>matthias fritschi

 Jakub Jankowski

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Re: auth.log

2001-06-20 Thread Jakub Jankowski

On 2001-06-20, Matthias Fritschi wrote:

> > Jun 20 06:25:02 blacksun su[2095]: + ??? root-nobody
> > Jun 20 06:25:02 blacksun PAM_unix[2095]: (su) session opened for user nobody by 
>(uid=0)
>
>could that mean somebody got into the server using a security leak in
>a process running as nobody? at this time, i was still sleepeing
[...]

 No. It means that some process running with root privileges switched
its uid to nobody's. There is some cron job executed at 6:25am
probably, this is the most common reason of 'automatic' su'ing from
root to nobody. Look for files containing string "25 6 *" somewhere
under /var. Their contents should explain you many things.

 I hope it'll help.

>matthias fritschi

 Jakub Jankowski

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Re: Exploit

2001-06-09 Thread Jakub Jankowski
On 2001-06-09, Tomasz Olszewski wrote:

>Could you please tell me how I can prevent from following exploit:

 Do you really think it's an 'exploit'? ;>

[EMAIL PROTECTED] admin$ cat l33t.sh
#!/bin/sh
echo "1|nux r007 3xp10|7 by 1c4m7uf"
cd /tmp
cat >ex.c <

 s.

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Re: Exploit

2001-06-09 Thread Jakub Jankowski

On 2001-06-09, Tomasz Olszewski wrote:

>Could you please tell me how I can prevent from following exploit:

 Do you really think it's an 'exploit'? ;>

shasta@quasimodo admin$ cat l33t.sh
#!/bin/sh
echo "1|nux r007 3xp10|7 by 1c4m7uf"
cd /tmp
cat >ex.c <

 s.

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Re: Strange output from "last" command

2001-03-21 Thread Jakub Jankowski
On 2001-03-21, William R. Ward wrote:

>My wtmp file seems to have some rather strange entries...
>
>xx   pts/3xxx.xxx.xxx.xxx  Wed Mar 21 14:17   still logged in
>date { Wed Mar 21 02:00   still logged in
>date | Wed Mar 21 02:00   still logged in
[...]

 On my debian box, rdate -s some.time.server adds similar entries to
my wtmp. I guess you synchronize your system clock using rdate, don't
you? I hope it will help.

>--Bill.

 Regards,
  Jakub.

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Re: Strange output from "last" command

2001-03-21 Thread Jakub Jankowski

On 2001-03-21, William R. Ward wrote:

>My wtmp file seems to have some rather strange entries...
>
>xx   pts/3xxx.xxx.xxx.xxx  Wed Mar 21 14:17   still logged in
>date { Wed Mar 21 02:00   still logged in
>date | Wed Mar 21 02:00   still logged in
[...]

 On my debian box, rdate -s some.time.server adds similar entries to
my wtmp. I guess you synchronize your system clock using rdate, don't
you? I hope it will help.

>--Bill.

 Regards,
  Jakub.

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