Re: [gentoo-user] security: unwanted daemons

2003-11-22 Thread purslow
031122 Andrew Gaffney wrote:
 [EMAIL PROTECTED] wrote:
 i installed Gentoo 031015  am very pleased with it, but still learning.
 there are  4  daemons in  /etc/init.d  for remote access to my box:
  sshd slapd slurpd rsyncd .  i've checked their man pages
  all appear to be running as servers for things i don't need or want.
 two questions: am i correct that i can remove these scripts from  init.d
 without interfering with the ordinary functioning of my system ?
 and why are they set up by default on a Gentoo system,
 when they cd cause a security problem for a naive -- mb me -- user ?
 and perhaps a 3rd question: are there any other similar items in  init.d ?
 Just because they are in /etc/init.d does not mean that they are running. 
 They are only running if *you* did 'rc-update add service default'.

yes, sorry for the rather naive question:
i knew re  runlevels , but hadn't remembered re  init.d .

 You can double check this by running 'rc-status'.
 If they are not in the list, then they don't start by default.

   rc-status
  bash: rc-status: command not found

don't you have to do it per daemon, eg '.../adsl status' ?

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Re: [gentoo-user] security: unwanted daemons

2003-11-22 Thread mathieu perrenoud
On Saturday 22 November 2003 09:18, [EMAIL PROTECTED] wrote:
  i installed Gentoo 031015  am very pleased with it, but still learning.
  there are  4  daemons in  /etc/init.d  for remote access to my box:
   sshd slapd slurpd rsyncd .  i've checked their man pages
   all appear to be running as servers for things i don't need or want.
  two questions: am i correct that i can remove these scripts from  init.d
  without interfering with the ordinary functioning of my system ?
  and why are they set up by default on a Gentoo system,
  when they cd cause a security problem for a naive -- mb me -- user ?
  and perhaps a 3rd question: are there any other similar items in  init.d
  ?
 
  Just because they are in /etc/init.d does not mean that they are running.
  They are only running if *you* did 'rc-update add service default'.

 yes, sorry for the rather naive question:
 i knew re  runlevels , but hadn't remembered re  init.d .

  You can double check this by running 'rc-status'.
  If they are not in the list, then they don't start by default.

    rc-status
   bash: rc-status: command not found

 don't you have to do it per daemon, eg '.../adsl status' ?

you can do it per daemon, but rc-status will actually test the status of all 
services registered to your current runlevel.

you can add a service to a runlevel with:
rc-update add service runlevel
and remove it with
rc-update del service runlevel

this will create/remove the symlink /etc/runlevels/runlevel/service
you can add or remove the links there yourself if you don't want to use the 
rc-tools. but don't remove things in /etc/init.d

rc-status is in /bin and is part of the baselayout ebuild. I think this one is 
included by default in gentoo. but if /bin/rc-status is not found, try 
re-emerging baselayout.


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Re: [gentoo-user] security: unwanted daemons

2003-11-22 Thread Dennis Freise
On Sat, 22 Nov 2003 11:46:26 +0100
mathieu perrenoud [EMAIL PROTECTED] wrote:

 rc-status is in /bin and is part of the baselayout ebuild. I think this one is
 included by default in gentoo. but if /bin/rc-status is not found, try 
 re-emerging baselayout.

'rc-update show' shows a list of services available on your system and at which
runlevel they're started - or not. I do like the output much more than
'rc-status' :)

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Re: [gentoo-user] security: unwanted daemons

2003-11-22 Thread Luke Scharf
On Sat, 2003-11-22 at 01:01, Andrew Gaffney wrote:
 Just because they are in /etc/init.d does not mean that they are running. They are 
 only 
 running if *you* did 'rc-update add service default'. You can double check this by 
 running 'rc-status'. If they are not in the list, then they don't start by default.

I often check what's on my own boxes by running nmap and nessus over the
network.

Nmap is a simple portscanner that will quickly show what ports are
available.

Nessus is a big-hammer security scanner.  It will show you what's
running, and any number of ways that a potential attacker could try to
exploit your system.  If you tell it not to be nice, it will actually
try a few hundred exploits and tell you whether they worked.

These tools are very useful and worth using if you're at all concerned
about security.

But, if you run them against someone else's machine, you will probably
piss them off.  For instance, if you happen to run nmap against my
university's DNS servers, even from off campus, they will have your ISP
call you for a little chat. Not that I'd know...  :-)

I don't even want to know what they'd have to say if I ran Nessus
against one of their machines...

-Luke

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Re: [gentoo-user] security: unwanted daemons

2003-11-21 Thread Andrew Gaffney
[EMAIL PROTECTED] wrote:
i installed Gentoo 031015  am very pleased with it, but still learning.

there are  4  daemons in  /etc/init.d  for remote access to my box:
 sshd slapd slurpd rsyncd .  i've checked their man pages
 all appear to be running as servers for things i don't need or want.
i do want to use 'ssh', but that's unaffected when i remove 'sshd'.
two questions: am i correct that i can remove these scripts from  init.d
without interfering with the ordinary functioning of my system ?
and why are they set up by default on a Gentoo system,
when they cd cause a security problem for a naive -- mb me -- user ?
and perhaps a 3rd question: are there any other similar items in  init.d ?
Just because they are in /etc/init.d does not mean that they are running. They are only 
running if *you* did 'rc-update add service default'. You can double check this by 
running 'rc-status'. If they are not in the list, then they don't start by default.

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