Re: [ilugd] Perl Developers In India

2010-03-07 Thread Navjot Kukreja
count me in too


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Re: [ilugd] Compiling Online With GCC

2008-11-04 Thread Navjot Kukreja
On Tue, Nov 4, 2008 at 8:48 PM, satyaakam goswami [EMAIL PROTECTED]wrote:

 On Tue, Nov 4, 2008 at 6:26 PM, Chirag Anand [EMAIL PROTECTED]
 wrote:
  Hi,
 
  We are hosting a programming competition in our college this weekend. We
  have a RHEL 4 server in our college on which we are planning to upload
 the
  code, compile the code there only and matching with the output. The
 problem
  is, that we want everyone to do all this from their rooms, from where the
  server is directly accessible. We dont people to go to labs and code.
 This
  will increase participation. But i am not able to find a script that does
  this, which can be run on the server through apache.
 
  Please help me find a solution to it...
 I don't understand your problem can you restate that. So far what i
 have understood is you have a server on which compiler is available
 and you want that to be shared among users .

 have a NFS share with compiler and ask the users to mount from server
 to local machines and use it. i am presuming all your user are on
 Linux/Unix . Once they compile the program then upload it to some
 common repo.

 the other scenario is the what everyone is discussing is about batch
 mode processing.

 hth
 Satya

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Hi
I made something exactly like what you've described a long time ago. This
was just an internal testing project, though, not meant to be used in an
actual scenario and might have a million bugs. Mail me off the list and I'll
send you the code. You can base your thing on this. Its PHP by the way, and
done in the way a few people described here.
-Navjot
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Re: [ilugd] mobile braodband connection ??

2008-07-24 Thread Navjot Kukreja
On Thu, Jul 24, 2008 at 2:05 PM, Arun Khan [EMAIL PROTECTED] wrote:

 On Thursday 24 Jul 2008, tirveni yadav wrote:

  I have been using Reliance usb modem(Huawei CDMA EC325) for last one
  year and get consistent speed of 16 kB/s most of the time. It is
  easily configured by using wvdialconf .

 The OP was regarding mobile broadband service.

 IIRC, TRAI has defined 256 Kbps up/down stream as the minimum to qualify
 as broadband.  It is true that Reliance/Tata USB data port service does
 give 'Net connection on the move but they do not qualify as broadband.

 --
 Arun Khan

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That is the point I've been trying to make from the beginning.
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Re: [ilugd] mobile braodband connection ??

2008-07-21 Thread Navjot Kukreja
Tata Indicom/Reliance Connections provide sub dial-up speeds. Not
recommended since you mentioned you're looking for Broadband. Try Reliance's
Wimax. Don't know about its availibility outside of metros.
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Re: [ilugd] mobile braodband connection ??

2008-07-21 Thread Navjot Kukreja
On Mon, Jul 21, 2008 at 10:36 PM, Shamail Tayyab [EMAIL PROTECTED] wrote:

 Navjot Kukreja wrote:
  Tata Indicom/Reliance Connections provide sub dial-up speeds. Not
  recommended since you mentioned you're looking for Broadband. Try
 Reliance's
  Wimax. Don't know about its availibility outside of metros.
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 Here i would like to add that Reliance's Wimax is not a mobile one. It
 has got an antenna, just like a 14 LCD, and has a wire which connects
 to the PC(router actually). The antenna needs special alignment with the
 tower that is done by the installation person. So you cannot take it
 anywhere.
Rest look for data cards. They are compatible with linux with some
 hue and tricks. They are detected as cdc_acm device and can be
 configured to dial to the ISP.

 Regards
 Shamail

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Forgive me if i'm wrong. I interpreted his requirements as being essentially
fixed in nature(as opposed to mobile computing) but that his location of
installation might change multiple times in the next few months. In the case
that i'm talking about, WiMax is a suitable solution.

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[ilugd] Search Algorithms

2008-07-10 Thread Navjot Kukreja
HI everyone
I saw that there are a lot of open source site-search scripts available on
the web. I'm wondering how exactly they do their job. Apart from indexing
every single word in every single page, how do they sort the 'keywords'
according to relevance to each page so that the results are more accurate.
Or, in other words, when i search for a particular word, it probably lists
all pages that contain the word. What i want to know is what is the
algorithm determining the order of results. The question still might seem
too general.
I want a script to parse a certain collection of pages and create keyword to
page relationships giving weight to each relation, which represents how
relevant that keyword is to that particular page.
Does such a script exist? Because I can't seem to find such a thing. If it
doesn't, I can't even think of a suitable way to implement this. Can someone
shed light here please?
Thanks
Navjot Kukreja
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[ilugd] Send Message from Console

2008-07-08 Thread Navjot Kukreja
Hi
I'm logged into a machine from SSH and want to send a message to the user
who is using it locally on GUI on display :0. i tried xmessage but i couldnt
make it send messages to another display. Does anyone know a way?
-Navjot Kukreja
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Re: [ilugd] Send Message from Console

2008-07-08 Thread Navjot Kukreja
These are console commands. The person will get these messages only if he
has opened a console window. I want that these messages should pop up even
if no terminal/console windows are open.
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Re: [ilugd] Looking for USB based SIP Phone

2008-07-06 Thread Navjot Kukreja
#SHIV
You mentioned a chinese dual mode phone. where in delhi can i get such
chinese phones? and...do i ask for a dual mode, wifi enabled phone or is
there some other 'market term' for them?
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Re: [ilugd] Looking for USB based SIP Phone

2008-06-25 Thread Navjot Kukreja
Chinese dual mode phone? sounds interesting!
where do you get these chinese phones? what do I ask for?
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Re: [ilugd] Looking for USB based SIP Phone

2008-06-23 Thread Navjot Kukreja
E50 doesn't have a SIP client, I have confirmed that on my handset. E61
onwards might have.
I wanted to do something similar to what you want here. I have finally
settled for a Linksys PAP2T ATA, which I got for USD 45. ATAs  connect to
your LAN and let you use a normal phone as an IP phone to log on to any
asterisk server.
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[ilugd] File Repository

2008-06-16 Thread Navjot Kukreja
Hi Folks
I need to setup a file repository for an internal website. Its something
like an FTP server but with a web interface, with categories etc. (like
download.com). I know that its possible to create this using any of the
available CMSs but I don't want to learn an entire CMS for just this as I'm
not interested in any customization. Appearance doesn't matter to me, I just
need it without frills. I was hoping to find an Open Source solution that I
could use out of the box. Any suggestions on this, or a simpler way of going
about this than learning to customize a CMS?
Thank You
Navjot Kukreja
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Re: [ilugd] Looking for USB based SIP Phone

2008-06-14 Thread Navjot Kukreja
Most phones sold as 'skype phones' are locked on to skype by the driver
provided. I have myself tried a philips model
(VOIP080)and some chinese make phone. The chinese phone even had 'SIP
compatible' written on its packaging but it turned out to be another skype
phone. the keypad in these phones works only for skype and that too only in
windows. they can still be used as a sound device for a soft phone sip
client(that's how i use mine). in that, it will obviously work on linux.
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Re: [ilugd] Sharing network load over multiple ssh tunnels

2008-04-24 Thread Navjot Kukreja



 you can bind OpenSSH tunnel's SOCKS
 proxy to a network address, using -D option of ssh(1).

I am already doing this. but this option will bind it to a particular port
on the loopback interface right? i thought i'd be able to use:

 # ip route add nexthop via [addr1] nexthop via [addr2] nexthop via [addr3]

if i can associate an entire interface with one of the tunnels. I guess I
can't. or rather, there are better ways.


how do u suggest i achieve this?


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Re: [ilugd] Sharing network load over multiple ssh tunnels

2008-04-24 Thread Navjot Kukreja
Yes i am aware of what you posted. This is exactly the setup I'm using
currently. I establish 3 tunnels, and SOCKS proxies on 3 different ports.
How do i configure automatic load sharing between the three.

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Re: [ilugd] Sharing network load over multiple ssh tunnels

2008-04-24 Thread Navjot Kukreja
tun/tap seems perfect. not able to set it up, though.help would be
appreciated. and, the 3 ports i'm using are on the same interface. so, if i
want to use an application, i have to enter either of these three ports nos
in the proxy setting. what if i want to use the combined bandwidth of  all
three in an application?
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Re: [ilugd] Sharing network load over multiple ssh tunnels

2008-04-22 Thread Navjot Kukreja
The setup is almost like you described, except the socks servers are all
running on my machine on different ports and each server maps to a tunnel
which is connected to the hosts A, B and C. LVS looks like a complicated
solution. Is all that necessary in case all the socks servers are running on
the same machine, just on different ports? and, isnt it possible to map an
ssh tunnel to a network interface? that way we could use the kernel's
default load balancing functionality.

On Tue, Apr 22, 2008 at 11:17 AM, Mayank [EMAIL PROTECTED] wrote:

 If I've understood your problem correctly then you have a machine which
 can
 access internet using SOCKS servers running on multiple machines.

 --Socks Server on Machine A 

 ||
 Your Machine Socks Server on Machine B
 -
 Router/Firewall -- Internet

 ||
 --Socks Server on Machine C-

 I guess above diagram illustrates the situation of your setup. In this
 case
 you can use a dispatcher system before socks servers and allow the
 dispatcher system to do load balancing for your connection. I've not done
 it
 myself but for the sake of it you can give LVS (
 http://www.linuxvirtualserver.org) a try. Please do revert back if it
 helps
 you out.

 Regards,
 Mayank

 On Tue, Apr 22, 2008 at 10:59 AM, Navjot Kukreja [EMAIL PROTECTED]
 wrote:

  Hi
  I access the internet by establishing an SSH tunnel to one of multiple
  hosts, and using dynamic port forwarding(SOCKS) on my computer. I would
  like
  to do some load sharing over the multiple tunnels that I have,
 effectively
  increasing the speed that i get. Is there a way that I can configure an
  SSH
  tunnel as a network interface on the machine? Also, is there another way
  to
  carry out load sharing over multiple tunnels without creating
 interfaces?
  Thank you
  Navjot Kukreja
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[ilugd] Sharing network load over multiple ssh tunnels

2008-04-21 Thread Navjot Kukreja
Hi
I access the internet by establishing an SSH tunnel to one of multiple
hosts, and using dynamic port forwarding(SOCKS) on my computer. I would like
to do some load sharing over the multiple tunnels that I have, effectively
increasing the speed that i get. Is there a way that I can configure an SSH
tunnel as a network interface on the machine? Also, is there another way to
carry out load sharing over multiple tunnels without creating interfaces?
Thank you
Navjot Kukreja
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Re: [ilugd] IPv6 in Linux

2008-04-16 Thread Navjot Kukreja
Hi all
I stopped the DHCP effort for now and went ahead with RADVD for the time
being. I have now set up all application services(WEB, FTP, MAIL etc) to use
IPv6. I had set this up in an isolated network. Now I want to connect this
network to my institute's LAN. I want to do this for two purposes.
Primary purpose: I want these computers to be able to access the internet. I
want to do this in two ways(yes, BOTH these ways). I want to set up a server
that will forward the traffic as IPv4 traffic across the LAN. we'll only be
using conventional IPv4 internet this way.
Secondly, I want to be able to use the IPv6 internet here too. since 6to4
tunneling requires global IPv4 addresses, that is not an option. All
computers accessible to me are behind a NAT(IPv4). How can i set up things
so that IPv6 traffic can be sent over the IPv4 LAN?

Secondary purpose: Is it possible for IPv6 enabled hosts elsewhere on the
network to access these IPv6 services over the IPv4 LAN? The routers,
switches etc along the way are all inaccessible(for now). The institute lan
uses vLAN systems from cisco. i can get more details on the LAN
configuration if required. So, wat i want, in a nutshell is, tht i want a
dual stack host to access v6 services over a v4 LAN. something like
establishing my own 6to4 tunnel of sorts. Please advise on how to realize
this.

Any help would be greatly appreciated. Also, I guess i haven't put enough
configuration info here. Please ask for it if any info is required to
understand the configuration.
Thank you
Navjot Kukreja

On Wed, Apr 2, 2008 at 2:43 AM, Ashish Shukla आशीष शुक्ल 
[EMAIL PROTECTED] wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

  Navjot Kukreja writes:
   Navjot I tried again after stopping ip6tables service too. no result.
   Navjot Tried with the RADV daemon, it manages to assign an address
 properly with no
   Navjot configuration on the client side.

 How about you posting your dhcp6{s,c} configs ? And also how're you
 testing things ?

   Navjot As RADV now also supports passing DNS options(haven't
   Navjot tested it yet, though), is there a reason I'd still want
   Navjot to try and make DHCPv6 work?apart from curiosity of
   Navjot course.

 You'll need dhcpv6 if you wanna statically allocate (or bind) IPv6
 addresses to the hosts, or want to advertise some more options.

 HTH
 - --
 Ashish Shukla आशीष शुक्ल
 http://wahjava.wordpress.com/
 ·-- ·-  ·--- ·- ···- ·- ·--·-· --· -- ·- ·· ·-·· ·-·-·- -·-· --- --
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 pX7zeQyjLuNRsnUuxJaCJr4=
 =dFw0
 -END PGP SIGNATURE-

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Re: [ilugd] IPv6 in Linux

2008-04-16 Thread Navjot Kukreja
I guess the problem statement is not clear enough. An IPv4 NAT system
exists. I want my IPv6 hosts to access the internet(IPv4 internet and IPv6
internet) and the only internet connectivity i have(at this stage) is from
behind that NAT. I own a globally routable IPv6 address prefix(48 bit), so i
can allocate IPv6 addresses if required. The problem being that the router
itself is inaccessible to me at this stage, I do not have access to any
machines with globally routable IPv4 addresses. 6to4 tunneling even refuses
to start seeing that the assigned IPv4 address is of the 172.x.x.x series,
so 6to4 tunneling in its original form is not an option for me as it can't
work from behind a NAT.
Also, I'm aware of  how 6to4 works, but I'm talking about the 6to4
implementation in the kernel. once its enabled from /etc/sysconfig/network,
it will try to assign a 6to4 address based on the basis of the assigned IPv4
address. Since it doesn't find one, it fails to bring up the 6to4 interface.
therefore it won't work from behind a NAT. Also, it can't be used to
transport IPv6 packets over an IPv4 LAN(because the source and the
destination don't have globally routable IPv4 addresses, so it refuses to
assign IPv6 addresses based on the internal IPv4 address)Also, 6to4
implementation doesn't give control over the tunnel broker(which is
essential as i want to establish my own tunnel).
Also, you mentioned somewhere that i should let IPv4 networks and IPv6
networks stay apart. My purpose in setting up this test-bed is to see the
interoperability of IPv4 and IPv6 hosts as the entire institute's LAN would
be upgraded for IPv6 support based on my results here. Since most hosts will
still be using IPv4(after upgradation), the dual stack architechture is what
I'm interested in.
I hope i have made things clearer this time.
Thanks
Navjot Kukreja
On Thu, Apr 17, 2008 at 1:50 AM, Ashish Shukla आशीष शुक्ल 
[EMAIL PROTECTED] wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

  Navjot == Navjot Kukreja [EMAIL PROTECTED] writes:
 Navjot Hi all
Navjot I stopped the DHCP effort for now and went ahead with RADVD for
 the time
Navjot being. I have now set up all application services(WEB, FTP,
 MAIL etc) to use
Navjot IPv6. I had set this up in an isolated network. Now I want to
 connect this
Navjot network to my institute's LAN. I want to do this for two
 purposes.
Navjot Primary purpose: I want these computers to be able to access
 the internet. I
Navjot want to do this in two ways(yes, BOTH these ways). I want to
 set up a server
Navjot that will forward the traffic as IPv4 traffic across the LAN.
 we'll only be
Navjot using conventional IPv4 internet this way.
Navjot Secondly, I want to be able to use the IPv6 internet here too.
 since 6to4
Navjot tunneling requires global IPv4 addresses, that is not an
 option. All
Navjot computers accessible to me are behind a NAT(IPv4). How can i
 set up things
Navjot so that IPv6 traffic can be sent over the IPv4 LAN?

 In IPv4 networks, I NAT because, I'm short of globally routable of
 IPv4 addresses. But in IPv6, I don't have do NAT. Anyways, IPv6 network
 and an IPv4 network are two different networks, and you shouldn't try
 to relate them. Being assigned locally routable IPv4 address doesn't
 mean, you can't possess a globally routable IPv6 address or
 vice-versa. And, there is nothing in IPv6, which forbids you from
 assigning
 globally routable IPv6 addresses to your local network, provided you
 technically own the network prefix of those globally routable
 addresses. So, now if you want your local LAN to be globally
 addressable with a unique address, you need to get connectivity to
 IPv6 internet, either direct or indirect via some tunnel.

 Since you mentioned 6to4 tunnelling, assign your desired 6to4
 address to your IPv6 router's external interface, and then allocate a
 subnets of your 6to4 range to your internal interfaces. This is the
 way ISPs do allocation of IP addresses. And after this start 'radvd' for
 assigning address to all boxen connected to your router's internal
 interfaces. And then enable the IPv6 forwarding on your IPv6 router.

Navjot Secondary purpose: Is it possible for IPv6 enabled hosts
 elsewhere on the
Navjot network to access these IPv6 services over the IPv4 LAN?

 You mean the actual packets flowing on the network are IPv4 packets
 encapsulated in Ethernet frames, right ?

Navjot The routers, switches etc along the way are all
Navjot inaccessible(for now). The institute lan uses vLAN systems
Navjot from cisco.

 Never played with VLANs or Sizco product (except a Linksys WRT54GS? ).

Navjot i can get more details on the LAN configuration if
Navjot required. So, wat i want, in a nutshell is, tht i want a
Navjot dual stack host to access v6 services over a v4
Navjot LAN. something like establishing my own 6to4 tunnel of
Navjot sorts. Please advise on how to realize this.

 I

Re: [ilugd] IPv6 in Linux

2008-04-01 Thread Navjot Kukreja
Thanks a lot for the help Ashish.
I tried with the iptables service turned off. No result there either. Is
there something apart from iptables that might be blocking packets?

netstat -L lists it as running on local address *:dhcpv6-server, that is how
its supposed to be i guess. but, the state column of the entry is empty(it
says LISTEN for some of the other entries, shouldnt this socket be in LISTEN
state too??). how do i go about correcting this?

netstat -tupan doesn't list it at all

Also, it seems that there is some sort of a service that is trying to assign
an address to the interface on the client(Fedora 8). When the dhcpv6 client
fails to assign an address, it automatically assigns itself an IPv4
address(a private address). How can i disable this functionality?

As always, help is highly appreciated
thank you
Navjot Kukreja


On Mon, Mar 31, 2008 at 1:18 AM, Ashish Shukla आशीष शुक्ल 
[EMAIL PROTECTED] wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

  Navjot == Navjot Kukreja [EMAIL PROTECTED] writes:
Navjot Hi everyone
Navjot I am supposed to set up an IPv6 testbed here in college and I'm
 stuck at the
Navjot very first step. I've tried googling but didn't anything very
 useful.
Navjot My target:
Navjot 1. Stateful autoconfiguration of clients using DHCPv6
Navjot 2. DNSv6
Navjot 3. Other services like mail, ftp, www etc

 Cool, and all the best :)


 [snipped]

Navjot e) client starts sending solicit messages. they show up in
 tcpdump on the
Navjot server machine. but, the dhcpserver sends no response. client's
 solicit
Navjot messages continue with no response from the server

 do you know tcpdump also shows packets dropped by netfilter firewall,
 hmm...?


 Happy IPv6-ing :)

 Ashish Shukla
 - --
 Ashish Shukla आशीष शुक्ल
 http://wahjava.wordpress.com/
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 oS4WVCKYMDnwpbhXYLcVg0Q=
 =1btE
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Re: [ilugd] IPv6 in Linux

2008-04-01 Thread Navjot Kukreja
I tried again after stopping ip6tables service too. no result.
Tried with the RADV daemon, it manages to assign an address properly with no
configuration on the client side. As RADV now also supports passing DNS
options(haven't tested it yet, though), is there a reason I'd still want to
try and make DHCPv6 work?apart from curiosity of course.

On Tue, Apr 1, 2008 at 3:00 PM, Ashish Shukla [EMAIL PROTECTED] wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 On Tue, Apr 1, 2008 at 2:52 PM, Ashish Shukla  wrote:

 [snipped]
 -BEGIN PGP SIGNATURE-
 Version: GnuPG v1.4.6 (GNU/Linux)
 Comment: http://getfiregpg.org

 iD8DBQFH8gG+Hy+EEHYuXnQRAtfMAJ90RoxoOsGaG5Z1YWpSaDlr8c7cpgCfaWKg
 7ffr72QHnun/gh794yxi0PM=
 =4lRm
 -END PGP SIGNATURE-


   Quoting from netstat(8):

 [quote]
State
   The state of the socket. Since there are no states in raw mode
 and usually no states used in UDP, this column may be left blank.
 [/quote]

 Sorry for reposting, FireGPG[1] messed up quote in my last mail.

 References:
 [1] - http://www.getfiregpg.org/


 --
 Ashish Shukla आशीष शुक्ल http://wahjava.wordpress.com/
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[ilugd] IPv6 in Linux

2008-03-30 Thread Navjot Kukreja
Hi everyone
I am supposed to set up an IPv6 testbed here in college and I'm stuck at the
very first step. I've tried googling but didn't anything very useful.
My target:
1. Stateful autoconfiguration of clients using DHCPv6
2. DNSv6
3. Other services like mail, ftp, www etc

Platforms:
1. Fedora Core 4
2. Fedora 7
3. Fedora 8
4. Any windows version, if time permits

As step 0, I have managed to configure both the systems for static IPv6
addresses and pinged both from each other. Also, pings to the multicast
address(ff02::1) are being responded to by both hosts. This would mean that
kernel support for IPv6 is enabled etc etc.

DHCP:
a) used the Linux DHCPv6 implementation (
https://fedorahosted.org/dhcpv6/wiki)
b) built from source both the client and the server
c) started the server in console, full verbose debug mode(no errors), says
its listening for connections
d) started the client on another machine, in console, full verbose debug
mode too.
e) client starts sending solicit messages. they show up in tcpdump on the
server machine. but, the dhcpserver sends no response. client's solicit
messages continue with no response from the server

Please see if any of you faced this problem too. Any help would be greatly
appreciated.
Thank You
Navjot Kukreja
BITS Pilani
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