[Ilugc] A serious issue of Amazon Elastic Load Balancer
Hi all, for last few days I am facing problem while configuring ELB at Amazon cloud (EC2). The issue is, I am not getting client IP address while I have configured the ELB listener in Layer 4(TCP) mode in server variable, while I am getting that in Layer 7(HTTP) mode. I need client IP for my application. Still ELB has the issue of SSL/TLS Renegotiation vulnerability. So, I am not able to use ELB listener in Layer7(HTTP) mode, rather I am using ELB listener in Layer4(TCP) mode and handle the SSL/TLS Renegotiation vulnerability through Apache web server. That means.. Mode of Listener | Client IP address | SSL/TLS Renegotiation vulnerability --- Layer4(TCP) | Not Available | Vulnerability can be overcome Layer7(HTTP) | Available | Vulnerability can not be overcome I need both the feature(Client IP and Vulnerability overcome). I have written to Amazon support, but till now got very poor support from them. Now I am posting this issue to these list, so that if anyone have any idea to resolve that can share with everyone. Below is the mail that I have written to Amazon support.. --- Hi, as per the document published at http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/elb-listener-config.html When you use TCP for both front-end and back-end connections, your load balancer will forward the request to the back-end instances without modification to the headers. But unfortunately I am not getting IP address of client from the server variable REMOTE_ADDR on Layer 4 configuration of ELB. I am getting modified address on that variable. How can I get the actual one? I have no option to create Layer 7 configuration of ELB because still ELB has issue with SSL/TLS Renegotiation. Currently I am handling this issue from Apache server of back-end instance. Now I need to know the process to know the IP address of client through Layer 4 configuration of ELB. Without client IP our application will not run properly. I am not able to run the application. Waiting for prompt reply .. thanks. --- --- Nirmalya Lahiri Mobile: +91-9433113536 VOIP: nirmalyalah...@sip.linphone.org ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer
- Original Message - From: Girish Venkatachalam girishvenkatacha...@gmail.com To: ILUG-C ilugc@ae.iitm.ac.in Cc: Sent: Wednesday, March 20, 2013 12:44 PM Subject: Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer You have to solve the problem by using cookies and custom HTTP headers to include the original client IP address before rewriting. The custom HTTP header can added from client side only (as of my knowledge). But how can I get public IP address if the client is running behind proxy? Can you please explain me the term rewriting? For that what I have to do? I have to write any code? -Girish On Wed, Mar 20, 2013 at 12:34 PM, Nirmalya Lahiri nirmalyalah...@yahoo.com wrote: Hi all, for last few days I am facing problem while configuring ELB at Amazon cloud (EC2). The issue is, I am not getting client IP address while I have configured the ELB listener in Layer 4(TCP) mode in server variable, while I am getting that in Layer 7(HTTP) mode. I need client IP for my application. Still ELB has the issue of SSL/TLS Renegotiation vulnerability. So, I am not able to use ELB listener in Layer7(HTTP) mode, rather I am using ELB listener in Layer4(TCP) mode and handle the SSL/TLS Renegotiation vulnerability through Apache web server. That means.. Mode of Listener | Client IP address | SSL/TLS Renegotiation vulnerability --- Layer4(TCP) | Not Available | Vulnerability can be overcome Layer7(HTTP) | Available | Vulnerability can not be overcome I need both the feature(Client IP and Vulnerability overcome). I have written to Amazon support, but till now got very poor support from them. Now I am posting this issue to these list, so that if anyone have any idea to resolve that can share with everyone. Below is the mail that I have written to Amazon support.. --- Hi, as per the document published at http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/elb-listener-config.html When you use TCP for both front-end and back-end connections, your load balancer will forward the request to the back-end instances without modification to the headers. But unfortunately I am not getting IP address of client from the server variable REMOTE_ADDR on Layer 4 configuration of ELB. I am getting modified address on that variable. How can I get the actual one? I have no option to create Layer 7 configuration of ELB because still ELB has issue with SSL/TLS Renegotiation. Currently I am handling this issue from Apache server of back-end instance. Now I need to know the process to know the IP address of client through Layer 4 configuration of ELB. Without client IP our application will not run properly. I am not able to run the application. Waiting for prompt reply .. thanks. --- --- Nirmalya Lahiri Mobile: +91-9433113536 VOIP: nirmalyalah...@sip.linphone.org ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc -- Gayatri Hitech http://gayatri-hitech.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer
The custom HTTP header can added from client side only (as of my knowledge). But how can I get public IP address if the client is running behind proxy? Can you please explain me the term rewriting? For that what I have to do? I have to write any code? - Original Message - From: Girish Venkatachalam girishvenkatacha...@gmail.com To: ILUG-C ilugc@ae.iitm.ac.in Cc: Sent: Wednesday, March 20, 2013 12:44 PM Subject: Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer You have to solve the problem by using cookies and custom HTTP headers to include the original client IP address before rewriting. -Girish On Wed, Mar 20, 2013 at 12:34 PM, Nirmalya Lahiri nirmalyalah...@yahoo.com wrote: Hi all, for last few days I am facing problem while configuring ELB at Amazon cloud (EC2). The issue is, I am not getting client IP address while I have configured the ELB listener in Layer 4(TCP) mode in server variable, while I am getting that in Layer 7(HTTP) mode. I need client IP for my application. Still ELB has the issue of SSL/TLS Renegotiation vulnerability. So, I am not able to use ELB listener in Layer7(HTTP) mode, rather I am using ELB listener in Layer4(TCP) mode and handle the SSL/TLS Renegotiation vulnerability through Apache web server. That means.. Mode of Listener | Client IP address | SSL/TLS Renegotiation vulnerability --- Layer4(TCP) | Not Available | Vulnerability can be overcome Layer7(HTTP) | Available | Vulnerability can not be overcome I need both the feature(Client IP and Vulnerability overcome). I have written to Amazon support, but till now got very poor support from them. Now I am posting this issue to these list, so that if anyone have any idea to resolve that can share with everyone. Below is the mail that I have written to Amazon support.. --- Hi, as per the document published at http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/elb-listener-config.html When you use TCP for both front-end and back-end connections, your load balancer will forward the request to the back-end instances without modification to the headers. But unfortunately I am not getting IP address of client from the server variable REMOTE_ADDR on Layer 4 configuration of ELB. I am getting modified address on that variable. How can I get the actual one? I have no option to create Layer 7 configuration of ELB because still ELB has issue with SSL/TLS Renegotiation. Currently I am handling this issue from Apache server of back-end instance. Now I need to know the process to know the IP address of client through Layer 4 configuration of ELB. Without client IP our application will not run properly. I am not able to run the application. Waiting for prompt reply .. thanks. --- --- Nirmalya Lahiri Mobile: +91-9433113536 VOIP: nirmalyalah...@sip.linphone.org ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc -- Gayatri Hitech http://gayatri-hitech.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer
Girish, That means you are suggesting me to replace ELB with an amazon EC2 instance running relayd as a load-balancer. Am I a correct? It is not perfect solution. Because Amazon ELB has redundancy support, that means if an ELB somehow goes down another ELB will come alive to support the load-balancing service. If I run a single EC2 instance then how can I overcome from this situation? So, I need a solution without replacing ELB. --Nirmalya - Original Message - From: Girish Venkatachalam girishvenkatacha...@gmail.com To: ILUG-C ilugc@ae.iitm.ac.in Cc: Sent: Wednesday, March 20, 2013 1:37 PM Subject: Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer On Wed, Mar 20, 2013 at 1:05 PM, Nirmalya Lahiri nirmalyalah...@yahoo.com wrote: You have to solve the problem by using cookies and custom HTTP headers to include the original client IP address before rewriting. The custom HTTP header can added from client side only (as of my knowledge). But how can I get public IP address if the client is running behind proxy? Can you please explain me the term rewriting? For that what I have to do? I have to write any code? You can use openbsd relayd(8) for that. No code. Just configuration. -Girish ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer
Girish, thanks for your kind reply. also thanks for spending time to reply may mail. I am also searching for a person who can help me. --- Nirmalya Lahiri From: Girish Venkatachalam girishvenkatacha...@gmail.com To: ILUG-C ilugc@ae.iitm.ac.in Sent: Wednesday, March 20, 2013 2:35 PM Subject: Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer These are not questions that can be answered offhand. I gave you ideas. Look at ha-proxy. Even if it is a cloud old ideas do apply. However there are guys with enough cloud background in LUG and elsewhere who also can perhaps help you. I suggest you hire a consultant and spend some cash if you are not in a position to benefit by list feedback. Best of luck. -Girish On Wed, Mar 20, 2013 at 2:16 PM, Nirmalya Lahiri nirmalyalah...@yahoo.com wrote: Girish, That means you are suggesting me to replace ELB with an amazon EC2 instance running relayd as a load-balancer. Am I a correct? It is not perfect solution. Because Amazon ELB has redundancy support, that means if an ELB somehow goes down another ELB will come alive to support the load-balancing service. If I run a single EC2 instance then how can I overcome from this situation? So, I need a solution without replacing ELB. --Nirmalya - Original Message - From: Girish Venkatachalam girishvenkatacha...@gmail.com To: ILUG-C ilugc@ae.iitm.ac.in Cc: Sent: Wednesday, March 20, 2013 1:37 PM Subject: Re: [Ilugc] A serious issue of Amazon Elastic Load Balancer On Wed, Mar 20, 2013 at 1:05 PM, Nirmalya Lahiri nirmalyalah...@yahoo.com wrote: You have to solve the problem by using cookies and custom HTTP headers to include the original client IP address before rewriting. The custom HTTP header can added from client side only (as of my knowledge). But how can I get public IP address if the client is running behind proxy? Can you please explain me the term rewriting? For that what I have to do? I have to write any code? You can use openbsd relayd(8) for that. No code. Just configuration. -Girish ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc -- Gayatri Hitech http://gayatri-hitech.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] Private IP in Public Network
Hi everyone, today I have discover a critical network infrastructure which is almost impossible. I believe very few people have seen this before. The story is in my office we have leased internet connection with static IP from TATA Communication Ltd. In my local network I have configured network ip (192.168.7.0). So all the PC in my local network has the IP of the range 192.168.7.1 to 192.168.7.253. For a experimental purpose yesterday I have ping to 192.168.2.10... It should not return reply. But unfortunately I got reply from a host. After investigation I have found that the host is outside of my local network. Please look into the tracepath report from my local PC to that unknown host. nirmalya@nirmalya-desktop:~$ tracepath 192.168.2.10 1: nirmalya-desktop.local (192.168.7.103) 0.141ms pmtu 1500 1: 192.168.7.51 (192.168.7.51) 0.706ms 1: 192.168.7.51 (192.168.7.51) 0.700ms 2: 115.115.147.137 (115.115.147.137) 150.228ms 3: 121.240.2.54 (121.240.2.54) 188.099ms asymm 6 4: 121.240.2.57 (121.240.2.57) 175.322ms asymm 6 5: 172.25.81.133 (172.25.81.133) 176.625ms asymm 6 6: 172.29.253.34 (172.29.253.34) 208.708ms asymm 8 7: 172.31.16.193 (172.31.16.193) 186.462ms asymm 8 8: 172.31.35.138 (172.31.35.138) 206.554ms asymm 10 9: 172.31.8.134 (172.31.8.134) 226.454ms asymm 10 10: 172.25.82.62 (172.25.82.62) 206.389ms asymm 9 11: 192.168.2.10 (192.168.2.10) 217.967ms reached Resume: pmtu 1500 hops 11 back 247 In this report 192.168.7.103 is my personal PC, 192.168.7.51 is internal IP of router, 115.115.147.137 is gateway IP of our leased internet connection. I have already reported it to TATA Communication Ltd. They give us commitment to solve it by 24hour. Have anyone see this before? --- [Nirmalya Lahiri] + - [+91-9433113536] ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] Open_sourcr_ gateway
Have you ever used IPCop (http://www.ipcop.org/). I am using it in my office as Network Gateway. --- [Nirmalya Lahiri] + - [+91-9433113536] From: rmariya sagaya asirvatham asir.li...@gmail.com To: ILUG-C ilugc@ae.iitm.ac.in Sent: Saturday, February 11, 2012 4:56 PM Subject: [Ilugc] Open_sourcr_ gateway Hi ilgus We need a open source Network gateway tool for our office environment ... plesae help. with thanks Asiyr ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] The service of Amazon EC2 (N. Virginia) region was down from yesterday
--- On Sun, 4/24/11, Zico mailz...@gmail.com wrote: From: Zico mailz...@gmail.com Subject: Re: [Ilugc] The service of Amazon EC2 (N. Virginia) region was down from yesterday To: ILUG-C ilugc@ae.iitm.ac.in Date: Sunday, April 24, 2011, 1:21 AM On Sun, Apr 24, 2011 at 1:39 AM, Rahul Sundaram methe...@gmail.com wrote: If you outsource your infrastructure, a certain level of lack of control is inevitable. Unless you have contractual safe guards in place, you are left exposed. Welcome to the cloud. Is that problem of cloud? I mean, when one node fails.. it attracts other nodes too to be down!! No..never..!! By mistake I have created only one node that is why I was facing that problem. Now I have solved that problem by creating another instance after taking backup(snapshot) of root device(EBS) of old instance and creating new root device(EBS) for newly created instance. The new instance is running now just like old instance with all old data. -- Best, Zico ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] The service of Amazon EC2 (N. Virginia) region was down from yesterday
Hi, this is a bad news for system administrators like me who are depend upon Amazon EC2 cloud environment. The service of N.Virginia region was down from yesterday. The status was reported at http://status.aws.amazon.com/. For those who maintain multiple instance in multiple region through load balancer, this type of system crash is not a big issue. But for us who maintain a single instance creates a big problem. --- নির্মাল্য লাহিড়ী [Nirmalya Lahiri] +৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536] ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] How to prevent MySQL table corruptions?
--- On Thu, 3/31/11, Shrinivasan T tshriniva...@gmail.com wrote: From: Shrinivasan T tshriniva...@gmail.com Subject: [Ilugc] How to prevent MySQL table corruptions? To: ILUG-C ilugc@ae.iitm.ac.in Date: Thursday, March 31, 2011, 6:44 PM Friends. I have a SugarCRM server running. I am getting the following error often, Query Failed:SELECT tracker.* from tracker WHERE user_id='max_id' ORDER BY id DESC LIMIT 0,10::MySQL error 1030: Got error 134 from storage engine To solve the issue, I have to repair the table 'tracker' everytime, by the following command in mysql. repair table tracker; How can we prevent these kind of frequent mysql table corruptions? Thanks. -- Regards, T.Shrinivasan You can change the database engine type of the table to InnoDB.. but be careful; the performance of InnoDB table is slower than MyISAM. --- নির্মাল্য লাহিড়ী [Nirmalya Lahiri] +৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536] ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] Introduction to MongoDB
CouchDB is another. I don't know which one is better..!! http://couchdb.apache.org/ --- নির্মাল্য লাহিড়ী [Nirmalya Lahiri] +৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536] --- On Tue, 3/29/11, Shrinivasan T tshriniva...@gmail.com wrote: From: Shrinivasan T tshriniva...@gmail.com Subject: [Ilugc] Introduction to MongoDB To: ILUG-C ilugc@ae.iitm.ac.in Cc: puduvai...@freelists.org, kanchi...@freelists.org, ilug...@googlegroups.com Date: Tuesday, March 29, 2011, 12:46 AM MongoDB is one of the NoSQL databases. Here is an easy book[1] and interactive guide[2] to learn MongoDB. [1] http://openmymind.net/2011/3/28/The-Little-MongoDB-Book [2] http://www.mongly.com/ -- Regards, T.Shrinivasan My Life with GNU/Linux : http://goinggnu.wordpress.com Free/Open Source Jobs : http://fossjobs.in ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] cloud aware applications
I have not developed/deployed any application directly on cloud environment, but indirectly I have done. Actually I have configured two linux server on Amazon Cloud environment and inside those servers I have install applications. --- নির্মাল্য লাহিড়ী [Nirmalya Lahiri] +৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536] --- On Mon, 3/28/11, narendra babu cnarendra_b...@yahoo.com wrote: From: narendra babu cnarendra_b...@yahoo.com Subject: [Ilugc] cloud aware applications To: ilugc@ae.iitm.ac.in Date: Monday, March 28, 2011, 8:57 PM Hello folks , In recent months I hear lot about cloud computing or cloud aware applications , not so convinced about the concept other than the advantages of IT procumerment/deployment and reducing maintanence costs in view from IT team and putting public aware applications like gmail on cloud or salesforce . but certainly cannot put home grown business apps on public cloud provider because of security reasons . Just curious has anybody deployed apps in cloud env or in simple how to create/deploy Cloud aware application How to make existing applications ( mostly legacy ) to make cloud aware or put in cloud environment thanks in advance for your inputs thanks Narendra ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] cloud aware applications
--- On Tue, 3/29/11, Guruprasad lgp171...@gmail.com wrote: From: Guruprasad lgp171...@gmail.com Subject: Re: [Ilugc] cloud aware applications To: ILUG-C ilugc@ae.iitm.ac.in Date: Tuesday, March 29, 2011, 1:13 PM Hi, On Tue, Mar 29, 2011 at 1:11 PM, Nirmalya Lahiri nirmalyalah...@yahoo.com wrote: I have not developed/deployed any application directly on cloud environment, but indirectly I have done. Actually I have configured two linux server on Amazon Cloud environment and inside those servers I have install applications. Please follow the mailing list guidelines (http://www.ilugc.in/content/mailinglist-guidelines) and avoid top posting. Thanks Regards, Guruprasad Guruprasad, I am extremely sorry for my mistake. --- নির্মাল্য লাহিড়ী [Nirmalya Lahiri] +৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536] ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] MTS AND RELIANCE MODEM NOT WORKING IN MINT (DEBIAN)
I am also using same device but the model is not same. The model number of my device is K3565 - Rev 2. It is working fine in my Ubuntu 9.10 Netbook edition. But I am not using Vodafone connection.. I am using BSNL 3G connection at Kolkata. --- নির্মাল্য লাহিড়ী [Nirmalya Lahiri] +৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536] --- On Tue, 2/8/11, sivakumar bharadhwaj calms...@gmail.com wrote: From: sivakumar bharadhwaj calms...@gmail.com Subject: Re: [Ilugc] MTS AND RELIANCE MODEM NOT WORKING IN MINT (DEBIAN) To: ILUG-C ilugc@ae.iitm.ac.in Date: Tuesday, February 8, 2011, 1:52 PM Dear Sirs, I have bought a new USB broadband modem - Vodafone - in mumbai. - they claim it is a 3-G modem - ZTE Corporation, China - Model K 3570-2 - HSDPA USB Stick. - I am using 10.04 and updated till yesterday. I am not able to connect it through the default network application. The new device is showing as 10.1.0.24111. Any suggestions on this. In their manual it says - works for win XP/Vista/7, and supports Mac OS. I have also tried it in windows XP - SP3, it seems to work, at least it got detected and I am able to set the parameters. The actual activation is expected in an hour. For general info : This vodafone - just introduced - claim to be a 3G device, and the costs 1799/- and unlimited usage for 1 month (free), at Mumbai. Tariff : post paid / prepaid - 599/- for unlimited per month. When the 2G gets upgraded to 3G, automatically this will be on 3G, and the tariff remains the same. s.sivakumar mumbai 98200 10728 ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] Finding Postgresql version number
Hi, you can use the following command to get only the version number. psql --version|head -1|cut -f3 -d' ' --- নির্মাল্য লাহিড়ী [Nirmalya Lahiri] +৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536] --- On Sat, 2/5/11, ராஜ பாண்டி vrp...@gmail.com wrote: From: ராஜ பாண்டி vrp...@gmail.com Subject: [Ilugc] Finding Postgresql version number To: ILUGC ilugc@ae.iitm.ac.in Date: Saturday, February 5, 2011, 1:26 PM Hi friends, I want to get the version number of postgresql installed in a system. psql --version serves the purpose, but it prints the version number with some text information also. I want only the version number. Is there any way to get only the version number or i have to process the psql --version output ? -- with regards Raja Pandi ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] Have a plan to configure LVM on Amazon EBS
Hi everyone, I have a plan to configure LVM on Amazon EBS. Elastic Block Store(EBS) is actually the disk drives of Amazon EC2 Instance. I planed in this way because in future if I want to extend the size of disk size, I can do that.. I want to know, if anyone have any better idea than LVM on Amazon EC2 cloud environment. Because configuring LVM on physical server environment is a common option. But I want this on Amazon EC2 environment. I am waiting for a better idea. --- নির্মাল্য লাহিড়ী [Nirmalya Lahiri] +৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536] ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
