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#2139 wrong IP adresses in active connections
i think this is a very important bug to be fix. in pptp
server when viewing my active connections, all the
private addresses that i fixed for my clients are
displayed wrong. the problem is that webmin does not
display the names of my clients so now i have no way to
know whose connected and whose not.!!
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please could some one help me find a way to solve this
problem . i really need to know whose connected. by the way
i'm using webmin-1.210. thanks
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It would be helpful if you could post the output from the
commands :
ps auxwww | grep pptp
ps axuwww | grep ppp
on your system..
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here is the result of the commande : but plz note that the
private IP adresses taken are not all right. i don't know from
where it get it and why it take it wrong. note also that when
assigning addresses to the vpn clients it is the right ones that
are assigned it is only for displaying that there is a problem
[root@VPN_Server ~]# ps auxwww| grep ppp
root 3551 0.0 0.4 3164 1196 ? S 06:47
0:00 /usr/sbin/pppd local file /etc/ppp/options.pptpd 115200
10.33.73.170:10.33.73.173 ipparam 81.192.253.144
root 3765 0.0 0.4 3308 1196 ? S 08:50
0:00 /usr/sbin/pppd local file /etc/ppp/options.pptpd 115200
10.33.73.170:10.33.73.171 ipparam 81.192.187.42
root 3842 0.0 0.4 2516 1184 ? S 09:35
0:00 /usr/sbin/pppd local file /etc/ppp/options.pptpd 115200
10.33.73.170:10.33.73.172 ipparam 81.192.114.254
root 5297 0.0 0.2 5544 732 pts/5 R+ 11:55 0:00
grep ppp
[root@VPN_Server ~]# ps auxwww| grep pptp
root 2503 0.0 0.2 1968 656 ? Ss Jun23
0:00 /usr/sbin/pptpd
root 3550 0.0 0.2 2852 516 ? S 06:47 0:00
pptpd [81.192.253.144:0000 - 7300]
root 3551 0.0 0.4 3164 1196 ? S 06:47
0:00 /usr/sbin/pppd local file /etc/ppp/options.pptpd 115200
10.33.73.170:10.33.73.173 ipparam 81.192.253.144
root 3764 0.0 0.2 2348 520 ? S 08:50 0:00
pptpd [81.192.187.42:0000 - 7380]
root 3765 0.0 0.4 3308 1196 ? S 08:50
0:00 /usr/sbin/pppd local file /etc/ppp/options.pptpd 115200
10.33.73.170:10.33.73.171 ipparam 81.192.187.42
root 3841 0.0 0.2 2144 516 ? S 09:35 0:00
pptpd [81.192.114.254:0000 - 7400]
root 3842 0.0 0.4 2516 1184 ? S 09:35
0:00 /usr/sbin/pppd local file /etc/ppp/options.pptpd 115200
10.33.73.170:10.33.73.172 ipparam 81.192.114.254
root 5299 0.0 0.2 4652 724 pts/5 R+ 11:55 0:00
grep pptp
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Based on that output, Webmin would use 81.192.253.144 as the
real remote IP address of the client, and
10.33.73.170-10.33.73.173 as the IPs of the VPN tunnel.
What should these really be on your system?
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no what the output is saying is that 81.192.253.144 is ONE
real remote IP address of a client with virtual ip address
10.33.73.173 but in fact this client has a virtual ip address of
10.33.73.174 .in brief i have 3 clients with ip addresses
10.33.73.171,172,174 . the one displayed 10.33.73.173 is not
assigned to any of my clients. you can see in the output that
i posted that i have 3 clients each one with a real adsl ip
address and a virtual one . but my concern is that this output
does not display the correct ip addresses assigned to my
clients.
thank you for answering my questions :) it's nice ffrom you
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more than this, when you ping 10.33.73.173 it does not exist.
this is normal because i did'nt assign it to any of my clients.
by why does it display it?? all i need to know is from where
does he get those addresses to display so that i go and see
if i can change it ??!!
even worse, sometimes when i actualize the page of active
connections, the ip address are changed like if they were
dynamic which is not the case since they are static!!!!
it's getting me crazy!! is it a bug or waht?? can i display the
names instead of the ip addresses???
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now i know where the problem is ... the problem is that
webmin reads from a file that gives incorrect data. how do
i know??
when i did the following command : "ps - ef | grep ppp" i
get also wrong information about the private clients
ip...!! so my question now is how come?? why does the pptpd
server display me wrong data how can i solve this
problem .. is it a configuration problem or what .
plz give me yr feedback, my boss start getting annoyed :)
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Webmin gets the list of IPs from the arguments to the
running ppp and pptpd processes. Normally, each pptpd
process has the remote IP as a paramter in [ ] brackets, and
has a single ppp sub-process with the local and remote
virtual IP addresses as parameters separated by a :
Is this the case on your system? Or does the pptpd process
have more than one ppp sub-process?
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yes this is the case on my system . but what happens is that
my ppp sub-process shows me my local and remote virtual ip
addresses separated by a : as you said but with the WRONG
remote ip address.
i would like to know how can this happen, is it something that
i need to change in pptpd configuration or what?
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from the mailling list of poptop server i understood what the
problem is :
when one of my clients connects, pptpd calls pppd process
whith a local and a remote ip address (he takes the first
remote ip address on the range that i specified)
at that time pppd doest'n know who the user is. when it
comes to authentication he sees that the client has a static
ip address and assigns it.
but at this point pptpd still think that the ip address of the
client is the one that HE gives (the first one that was available
on the pool and which is wrong). this is why there is
confusion about the ip addresses that are displayed in
webmin since it takes the data given by pptpd.
i'm using pptpd-1.2.1-1.i386.
is there a patch that fixes this bug , or do i need to upgrade
my version of pptpd??
thanks
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I may be able to fix this in webmin, by looking at the IPs
of the pppN interface.
Which IP in the ppp process command line is incorrect - the
first or the second?
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Actually, ignore that last message. From further checking,
I've found that there is nothing I can do in Webmin to
resolve this if the IPs in the ppp command arguments are
incorrect :-(
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root 3551 0.0 0.4 3164 1196 ? S 06:47
0:00 /usr/sbin/pppd local file /etc/ppp/options.pptpd 115200
10.33.73.170:10.33.73.173 ipparam 81.192.253.144
it is the second ip that is incorrect :"10.33.73.173"!! the first
one is the local ip address and there is no problem with it.
can you tell me when u fix the problem what i should do to fix
it also! thank u
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can't u do something with the ifconfig command !!
the ip's there are correct!
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The ifconfig command is no use, because there is no way to
tell which ppp processes correspond to which pppN interfaces ..
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what about adding the name of the user so that even if the ip
address is wrong at least we know which user is connected
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so what u'r telling me now is that there is no way to now who
are the clients that are connected to my vpn :(
don't you know of any other way to solve this problem ...
another software or a commande ....
i have about 50 clients so u can imagine how i can get lost if
i can't keep track of who is who !!!
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I've worked out another way to identify connections - from
the login name recorded in /var/log/messages . The next
Webmin release will support this .. assuming that your
system writes logs like :
Jun 30 09:33:27 fudu pppd[25426]: CHAP peer authentication
succeeded for jamie
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this is a good idea, even thought my system does not write
logs like this, but in fact i checked and you can take from
there the virtual remote and local ip addresses. they are the
right ones !:!!!
can you plz let me know when there is a new version of
webmin.
thanks a lot
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The next official version that includes this fix will be out
in a few weeks.
The next development version (1.216) will be available from
http://www.webmin.com/devel.html in a few days..
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hello
i'm trying to download the new version of webmin the
1.216.tar but the download is corrupted !! it says 8M but i can
have only 2M of it !!!
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Try downloading it from a different location ... I have
downloaded it myself, and it is definately OK.
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it is finally working good... i can see the right virtual ip
addresses of people connected. thank you .
but what version of pptpd are you using , because my system
does not show the names of people connected, it shows only
the remote and local ip addresses. now on webmin, it shows
unknown under username .
thanks a lot for that, it helps me a lot !
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I use PoPToP version 1.0.1 , which logs a line in
/var/log/messages like :
CHAP peer authentication succeeded for jcameron
when a user connects. Does yours log any similar line?