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HOWTO Restart LPD

DISCUSSION Peter 8 participants 16 messages May 7, 2003 – May 13, 2003

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Peter

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#0 lore raw

Hi,
When cups has been activated for printing, then on rebooting lpd is not started anymore.

How can I restart lpd from the command line instead of using printtool or printconf-tui? I can't find anything in man lpd.

Thanks & regards

Signature · 7 lines
Peter

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#1 lore raw

hiding my hostname

I want to find out how to hide my hostname or IP address,
from viewing by other people by using who, finger, or w,
while i was connected to a server via remote login (like ssh or telnet).

can anybody help me ?

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#2 lore raw

Re: hiding my hostname

Quoted 6 lines · Jesse Armand

I want to find out how to hide my hostname or IP address,
from viewing by other people by using who, finger, or w,
while i was connected to a server via remote login (like ssh or telnet).

If you connect to a remote server, by any means, there is no way to hide from that server the apparent IP address you are connecting from. That is, the remote server will either know the IP address of the host you are connecting from, or the host you are connecting through (in the sense of, say, a NAT'ing firewall or perhaps a proxy server of some sort). It has to know that or it cannot maintain the connection.

Technically, there is no way for the remote server to know your actual hostname, in the sense of whatever your host happens to have in the file /etc/hostname . But if it can do a reverse-lookup of your IP address, it can, and usually will, know a FQN associated with your host.

In principle, if you have root privileges on the remote server, you can modify the applications who, finger, and w, so they do not display the FQN or IP-address data. How to edit and recompile these apps is not really a beginner question, so I won't go into detail here (and anyway, I don't know the source for any of these apps well enough to answer at that level without doing some work). But there is nothing you can do on the host you are connecting *from* to accomplish what you want.

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#3 lore raw

Re: hiding my hostname (2)

well.. I think there is a way,
why ?
because i've just seen it.
when i'm logging in to a server,
i saw a client that hiding his hostname,
and it's not about the server not knowing my ip address, it's about hiding my ip address from viewing by other users.
I know a server must know an ip address of the client that connects to it.

when i use 'w' or 'who' command
the hostname table shows empty content

USER    TTY   FROM    LOGIN@    IDLE    WHAT
woho    p1     -      10:09AM    -      - (pine)

can u explain that ?

btw by using .nofinger i can hide myself from
fingering,
that's one way,

so anybody knows how to hide my hostname from 'who' and 'w'

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#4 lore raw

Re: hiding my hostname (2)

That is caused by someone being logged in through the console.

-Chris W.

Quoted 27 lines · Jesse Armand

well.. I think there is a way,
why ?
because i've just seen it.
when i'm logging in to a server,
i saw a client that hiding his hostname,
and it's not about the server not knowing my ip address, it's about hiding my ip address from viewing by other users.
I know a server must know an ip address of the client that connects to it.

when i use 'w' or 'who' command
the hostname table shows empty content

USER    TTY   FROM    LOGIN@    IDLE    WHAT
woho    p1     -      10:09AM    -      - (pine)

can u explain that ?

btw by using .nofinger i can hide myself from
fingering,
that's one way,

so anybody knows how to hide my hostname from 'who' and 'w'

Quoted 11 lines

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#5 lore raw

Re: hiding my hostname (3)

OK..someone being logged in, i know that,
but how does he hide his hostname information ?

Quoted 43 lines

That is caused by someone being logged in through
the console.

-Chris W.

Quoted 7 lines · Jesse Armand

well.. I think there is a way,
why ?
because i've just seen it.
when i'm logging in to a server,
i saw a client that hiding his hostname,
and it's not about the server not knowing my ip
address, it's about hiding my ip address from

viewing

Quoted 2 lines

by other users.
I know a server must know an ip address of the

client

Quoted 8 lines

that connects to it.

when i use 'w' or 'who' command
the hostname table shows empty content

USER    TTY   FROM    LOGIN@    IDLE    WHAT
woho    p1     -      10:09AM    -      - (pine)
Quoted 7 lines

can u explain that ?

btw by using .nofinger i can hide myself from
fingering,
that's one way,

so anybody knows how to hide my hostname from

'who'

Quoted 9 lines

and 'w'

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Quoted 9 lines

"unsubscribe linux-newbie" in

Quoted 2 lines

the body of a message to [email protected] More majordomo info at

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Quoted 1 line

Please read the FAQ at

http://www.linux-learn.org/faqs

Quoted 2 lines

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#6 lore raw

Re: hiding my hostname (3)

Quoted 2 lines · Jesse Armand

OK..someone being logged in, i know that,
but how does he hide his hostname information ?

There is no hostname to hide. His login is LOCAL to the host on which you are running w, not remote from a different host. That's what "through the console" means.

Quoted 28 lines
Quoted 28 lines

That is caused by someone being logged in through
the console.

-Chris W.

Quoted 7 lines · Jesse Armand

well.. I think there is a way,
why ?
because i've just seen it.
when i'm logging in to a server,
i saw a client that hiding his hostname,
and it's not about the server not knowing my ip
address, it's about hiding my ip address from

viewing

Quoted 2 lines

by other users.
I know a server must know an ip address of the

client

Quoted 10 lines

that connects to it.

when i use 'w' or 'who' command
the hostname table shows empty content

USER    TTY   FROM    LOGIN@    IDLE    WHAT
woho    p1     -      10:09AM    -      - (pine)

can u explain that ?

Quoted 7 lines
Quoted 7 lines
Quoted 5 lines

btw by using .nofinger i can hide myself from
fingering,
that's one way,

so anybody knows how to hide my hostname from

'who'

Quoted 1 line

and 'w'

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#7 lore raw

Re: hiding my hostname (3)

In reply to Jesse Armand

Since he is logged in from the console there is no host information displayed.

-Chris W.

Quoted 60 lines · Jesse Armand

OK..someone being logged in, i know that,
but how does he hide his hostname information ?

Quoted 43 lines

That is caused by someone being logged in through
the console.

-Chris W.

Quoted 7 lines · Jesse Armand

well.. I think there is a way,
why ?
because i've just seen it.
when i'm logging in to a server,
i saw a client that hiding his hostname,
and it's not about the server not knowing my ip
address, it's about hiding my ip address from

viewing

Quoted 2 lines

by other users.
I know a server must know an ip address of the

client

Quoted 8 lines

that connects to it.

when i use 'w' or 'who' command
the hostname table shows empty content

USER    TTY   FROM    LOGIN@    IDLE    WHAT
woho    p1     -      10:09AM    -      - (pine)
Quoted 7 lines

can u explain that ?

btw by using .nofinger i can hide myself from
fingering,
that's one way,

so anybody knows how to hide my hostname from

'who'

Quoted 9 lines

and 'w'

__________________________________
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Quoted 9 lines

"unsubscribe linux-newbie" in

Quoted 2 lines

the body of a message to [email protected] More majordomo info at

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Quoted 1 line

Please read the FAQ at

http://www.linux-learn.org/faqs

Quoted 2 lines
Quoted 11 lines

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#8 lore raw

Re: hiding my hostname (2)

In reply to Jesse Armand

Jesse,

Quoted 5 lines

the hostname table shows empty content

USER    TTY   FROM    LOGIN@    IDLE    WHAT
woho    p1     -      10:09AM    -      - (pine)

can u explain that ?

From what I've seen, that dash in the "From" column usually means a local
(to that machine) login...

Jame

--- BBBS/LiI v4.01 Flag-4
* Origin: http://bbs.rocasa.org (1:120/546)
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#9 lore raw

Re: hiding my hostname (3)

Let me tell u again..
it's not connecting from local machine

but it's connecting from remote machine..
i know that

at first it's not empty, it shows
bs165.tpb.itb.ac.id

after i 'w' again

the 'from' is empty, and i'm definitely sure, because i see the person connecting in remote machine. but...
he don't know why that happen.. quite weird he said that it was set by his friend

and anybody knows how to set it up ???

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#10 lore raw

Re: hiding my hostname

In reply to Jesse Armand

Sorry you can't do it. The machine you are connecting to will ALWAYS know the machines ip address of the machine you are connecting from.

Quoted 8 lines · Jesse Armand

I want to find out how to hide my hostname or IP
address,
from viewing by other people by using who, finger, or
w, while i was connected to a server via remote login (like ssh or telnet).

can anybody help me ?

Quoted 12 lines

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#11 lore raw
In reply to Peter

Under RH 9.0 and most recent versions of RedHat as well as Mandrake, just use the script in /etc/init.d

For example...

/etc/init.d/lpd restart

The other scripts in /etc/init.d are helpful for other services. Most of the scripts take as an argument on of the following: start, stop, restart, and status. These are very helpful at times. I'm sure there are some other options as well, but I've never used them.

J

Quoted 8 lines · Peter

Hi,
When cups has been activated for printing, then on rebooting lpd is not started anymore.

How can I restart lpd from the command line instead of using printtool or printconf-tui? I can't find anything in man lpd.

Thanks & regards

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author
#14 lore raw
In reply to J S

Thanks!

Quoted 3 lines · [email protected] said:

just use the script in /etc/init.d
For example...
/etc/init.d/lpd restart

That's the script used on booting where I get: Starting lpd: No Printers Defined

Doing "/etc/init.d/lpd start" from the command line I therefore get the same:
No Printers Defined.
Ergo before starting lpd a printer has to be defined first.

Can that be done from the command line?

Quoted 7 lines · Peter

Hi,
When cups has been activated for printing, then on rebooting lpd is not started anymore.

How can I restart lpd from the command line instead of using printtool or printconf-tui? I can't find anything in man lpd.

Signature · 7 lines
Peter

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#15 lore raw

If your using CUPS then the service is "cups".

"service cups restart" will restart it. or "service cups start" will just start it.

for cups to start up automagically run this command:
chkconfig --add cups

Quoted 27 lines · Peter

Thanks!

Quoted 3 lines · [email protected] said:

just use the script in /etc/init.d
For example...
/etc/init.d/lpd restart

That's the script used on booting where I get: Starting lpd: No Printers Defined

Doing "/etc/init.d/lpd start" from the command line I therefore get the same: No Printers Defined. Ergo before starting lpd a printer has to be defined first.

Can that be done from the command line?

Quoted 7 lines · Peter

Hi,
When cups has been activated for printing, then on rebooting lpd is not started anymore.

How can I restart lpd from the command line instead of using printtool or printconf-tui? I can't find anything in man lpd.

Signature · 10 lines
Bryan Whitehead
SysAdmin - JPL - Interferometry and Large Optical Systems
Phone: 818 354 2903
[email protected]

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