Where did the email really come from?
SPAMers will often say that they are in one country when they are actually in another country. SPAM is typically sent via a botnet made up of computers all over the internet, so the SPAM could pretty much be coming from any countery in the world. The person sending the SPAM could be in any [...]
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| February 9, 2009 1:28 PM
Email, Email origination, Email security, Email tracking, IP address, ISP, SMTP header analysis
SPAMers will often say that they are in one country when they are actually in another country. SPAM is typically sent via a botnet made up of computers all over the internet, so the SPAM could pretty much be coming from any countery in the world. The person sending the SPAM could be in any [...]
View Answer
| February 9, 2009 1:28 PM
Email, Email origination, Email security, Email tracking, IP address, ISP, SMTP header analysis
Whats the difference between SIP UA and SIP Account
SIP User Agents (UAs) are the end-user devices, used to create and manage a SIP session. Entities at VoIP endpoints capable of initiating and answering calls between peers, for example SIP phones and ATAs. When you register to Asterisk, you do not say “him” what numbers you are going to handle. You just register to [...]
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| February 6, 2009 3:05 PM
Multiplexers, SIP, SIP UA
SIP User Agents (UAs) are the end-user devices, used to create and manage a SIP session. Entities at VoIP endpoints capable of initiating and answering calls between peers, for example SIP phones and ATAs. When you register to Asterisk, you do not say “him” what numbers you are going to handle. You just register to [...]
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| February 6, 2009 3:05 PM
Multiplexers, SIP, SIP UA
Instant Messaging
Ya.. it is a good thinking… The IM development is depends on the Protocol. For example : IF you want to use SIP then SIP is providing Method called “MESSAGE” . Otherwise It can be other protocols like XMPP. You can find the XMPP source/package as open source i.e gloox /jabber package. By using these [...]
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| February 6, 2009 8:29 AM
IM, Instant Messaging, Instant Messaging API, Software development
Ya.. it is a good thinking… The IM development is depends on the Protocol. For example : IF you want to use SIP then SIP is providing Method called “MESSAGE” . Otherwise It can be other protocols like XMPP. You can find the XMPP source/package as open source i.e gloox /jabber package. By using these [...]
View Answer
| February 6, 2009 8:29 AM
IM, Instant Messaging, Instant Messaging API, Software development
SIP tags
Hi, The UAS should use the same To tag used in 180/183/187 response. Because based on the tags only the UA’s can identify the dialog. In case of proxy is in between UAC & UAS, the proxy can change the To tag in both 200 OK & 487 of the CANCEL. Best Regards, Balaji
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| February 6, 2009 7:38 AM
SIP, UAS
Hi, The UAS should use the same To tag used in 180/183/187 response. Because based on the tags only the UA’s can identify the dialog. In case of proxy is in between UAC & UAS, the proxy can change the To tag in both 200 OK & 487 of the CANCEL. Best Regards, Balaji
View Answer
| February 6, 2009 7:38 AM
SIP, UAS
Recommendation for handling wall phone plates in UTP cable installations
Ground loops occur when there is a difference in potential or a return path for a transient current. If the system is properly drained in at least one end (in the telecommunications room) any transient leaves via the bonding/earthing busbar and grid. As the metallic faceplate is not connected to earth, there would be no [...]
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| February 4, 2009 10:09 PM
best practices, Cabling, Groundwork, Installation, Network cabling, Network equipment, Network hardware, Networking, Project management, Siemens, UTP, wall phone plate
Ground loops occur when there is a difference in potential or a return path for a transient current. If the system is properly drained in at least one end (in the telecommunications room) any transient leaves via the bonding/earthing busbar and grid. As the metallic faceplate is not connected to earth, there would be no [...]
View Answer
| February 4, 2009 10:09 PM
best practices, Cabling, Groundwork, Installation, Network cabling, Network equipment, Network hardware, Networking, Project management, Siemens, UTP, wall phone plate
VNC without or with domain
A domain is not needed to use VNC. However, you should use SSH tunneling for VNC if possible to encrypt sessions. VNC passwords are weak and adding the SSH tunneling would enhance security. The VNC documentation may describe this configuration or it is available using this Google search http://letmegooglethatforyou.com/?q=vnc+ssh+tunnel Have you considered PCoIP instead of [...]
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| February 3, 2009 10:13 PM
3G, Domain Controller, Virtual Network Computing, VNC
A domain is not needed to use VNC. However, you should use SSH tunneling for VNC if possible to encrypt sessions. VNC passwords are weak and adding the SSH tunneling would enhance security. The VNC documentation may describe this configuration or it is available using this Google search http://letmegooglethatforyou.com/?q=vnc+ssh+tunnel Have you considered PCoIP instead of [...]
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| February 3, 2009 10:13 PM
3G, Domain Controller, Virtual Network Computing, VNC
What are the most overused tech buzzwords for 2008?
My list of overused IT buzzwords/acronyms: - Smart Phone - Mobile Broadband - Virtualisation - REST - AJAX Nandu:-) _________________________________________________________________ Might I ADD: Value – Add! …and Is there a better way to say Solutions? Please, no more Cloud Computing? GREEN anything … Bailouts and Financial Crisis… Bush Bashing ! Bob VL _______________________________________ Not really [...]
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| January 30, 2009 10:39 PM
AS/400, Buzzwords, CIO, CRM, Database, DataCenter, DataManagement, Development, Exchange, Linux, Lotus Domino, Microsoft Windows, Mobile, Networking, Oracle, SAP, Security, SQL Server, Storage, Technology, Virtualization, VoIP
My list of overused IT buzzwords/acronyms: - Smart Phone - Mobile Broadband - Virtualisation - REST - AJAX Nandu:-) _________________________________________________________________ Might I ADD: Value – Add! …and Is there a better way to say Solutions? Please, no more Cloud Computing? GREEN anything … Bailouts and Financial Crisis… Bush Bashing ! Bob VL _______________________________________ Not really [...]
View Answer
| January 30, 2009 10:39 PM
AS/400, Buzzwords, CIO, CRM, Database, DataCenter, DataManagement, Development, Exchange, Linux, Lotus Domino, Microsoft Windows, Mobile, Networking, Oracle, SAP, Security, SQL Server, Storage, Technology, Virtualization, VoIP
Classroom video service for parents to watch children online
Hi, sounds like a good idea. You will be happy to hear that its pretty easy too. You will need: 1 Mid spec computer – £400 Good internet conenction 2mb+ Webcams – good ones can be had for £40 Ok, so how can be done.. There is a program called Nefsis, it allows video conferencing. [...]
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| January 29, 2009 12:20 PM
Streaming Video, Video streaming, Video streaming services, Webcams
Hi, sounds like a good idea. You will be happy to hear that its pretty easy too. You will need: 1 Mid spec computer – £400 Good internet conenction 2mb+ Webcams – good ones can be had for £40 Ok, so how can be done.. There is a program called Nefsis, it allows video conferencing. [...]
View Answer
| January 29, 2009 12:20 PM
Streaming Video, Video streaming, Video streaming services, Webcams
Transmitting CCTV pictures to control room over secure wireless mesh network
Simplest, cheapest way, Each building uploads stream to secure webserver through encrypted virtual private network. Then streams downloaded to main control room. Will probably need alot of bandwidth. Good luck.
View Answer
| January 29, 2009 11:53 AM
CCTV, Research Assistant, Security, Wireless data transmission systems
Simplest, cheapest way, Each building uploads stream to secure webserver through encrypted virtual private network. Then streams downloaded to main control room. Will probably need alot of bandwidth. Good luck.
View Answer
| January 29, 2009 11:53 AM
CCTV, Research Assistant, Security, Wireless data transmission systems
priority queuing
Priority Queueing is only recommended for VoIP because of the way the switch handles the queue. Any frames residing in the queue are given priority over all other traffic in the switch. While the switch is busy processing the Priority Queue all other queues wait. Imagine now if you tagged several high-utilization applications as Priority, [...]
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| January 21, 2009 11:16 PM
Application development, Priority Queuing, VoIP
Priority Queueing is only recommended for VoIP because of the way the switch handles the queue. Any frames residing in the queue are given priority over all other traffic in the switch. While the switch is busy processing the Priority Queue all other queues wait. Imagine now if you tagged several high-utilization applications as Priority, [...]
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| January 21, 2009 11:16 PM
Application development, Priority Queuing, VoIP
Changing RNPG on a Nortel CS 1000
after more research, and more than a little trial and error I found my own answer. for those of you who are new to the cs1000 and might want to know yourself. it is load 20 req chg type (type of phone i.e. 500 or 3902) tn enter tn echg yes item rnpg 22 (where [...]
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| January 16, 2009 8:46 PM
Nortel CS 1000, PBX, RNPG, Virtual System Terminal
after more research, and more than a little trial and error I found my own answer. for those of you who are new to the cs1000 and might want to know yourself. it is load 20 req chg type (type of phone i.e. 500 or 3902) tn enter tn echg yes item rnpg 22 (where [...]
View Answer
| January 16, 2009 8:46 PM
Nortel CS 1000, PBX, RNPG, Virtual System Terminal
What will make an analog signal?
Digital
View Answer
| January 15, 2009 9:24 PM
Analog, Cabling, CAT 5, Network cabling, Network hardware, Network Interface Cards, Networking, Networking Equipment, signals, Telecom, Telecommunications
Digital
View Answer
| January 15, 2009 9:24 PM
Analog, Cabling, CAT 5, Network cabling, Network hardware, Network Interface Cards, Networking, Networking Equipment, signals, Telecom, Telecommunications
Cisco Router 2800 series step by step configuration using DSL
The <a href=”http://www.cisco.com/en/US/products/ps5854/prod_configuration_examples_list.html”>cisco site</a> has some good guides that should help you
View Answer
| January 13, 2009 5:49 PM
Cisco 2800, Cisco 2800 configuration, Cisco Routers, DSL, Routers
The <a href=”http://www.cisco.com/en/US/products/ps5854/prod_configuration_examples_list.html”>cisco site</a> has some good guides that should help you
View Answer
| January 13, 2009 5:49 PM
Cisco 2800, Cisco 2800 configuration, Cisco Routers, DSL, Routers
What should our next contest be on ITKnowledgeExchange.com?
<b>I believe the contest should be quantitative and measurable in regards to sales? For instance as an expert replies to a question, and it leads directly to a Solution – and preferrably a SALE. That will show real value, and results too!</b> Bob VL but how to measure it – objectively (not subjectively)? Jaideep Sales [...]
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| January 9, 2009 6:05 PM
AS/400, CRM, Database, DataCenter, Development, Exchange, Linux, Lotus Domino, Mobile, Networking, Oracle, SAP, SQL Server, Storage, Virtualization, VoIP
<b>I believe the contest should be quantitative and measurable in regards to sales? For instance as an expert replies to a question, and it leads directly to a Solution – and preferrably a SALE. That will show real value, and results too!</b> Bob VL but how to measure it – objectively (not subjectively)? Jaideep Sales [...]
View Answer
| January 9, 2009 6:05 PM
AS/400, CRM, Database, DataCenter, Development, Exchange, Linux, Lotus Domino, Mobile, Networking, Oracle, SAP, SQL Server, Storage, Virtualization, VoIP
VoIP with Skype and Verizon Wireless AirCard
If you are using the Verizon aircard to get internet access then you will need to have the laptop on and connected to the internet in order to use the Skype phone service. If you have a broadband internet connection such as a cable modem or DSL modem then you can use the Skype over [...]
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| January 6, 2009 7:38 AM
Skype, Verizon Wireless AirCard, VoIP
If you are using the Verizon aircard to get internet access then you will need to have the laptop on and connected to the internet in order to use the Skype phone service. If you have a broadband internet connection such as a cable modem or DSL modem then you can use the Skype over [...]
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| January 6, 2009 7:38 AM
Skype, Verizon Wireless AirCard, VoIP
Avaya Witness Contact Center
You are experiencing a limitation of the Avaya/Witness CSCM system. There is a maximum of 100 entries returned for any query. There is no way around this it is hard coded into the system. You need to narrow your query to produce the results you need.
View Answer
| December 31, 2008 3:09 PM
Avaya, Avaya Witness Contact Center
You are experiencing a limitation of the Avaya/Witness CSCM system. There is a maximum of 100 entries returned for any query. There is no way around this it is hard coded into the system. You need to narrow your query to produce the results you need.
View Answer
| December 31, 2008 3:09 PM
Avaya, Avaya Witness Contact Center
How to confiqure QoS in Cisco 6500 Switches
Configure QoS Let’s review the steps to configuring QoS on a Cisco router. Step 1: Define the traffic You must tell the router which traffic you want to give QoS, which you can accomplish either using an access control list (ACL) or using Network Based Application Recognition (NBAR). An ACL is the traditional way to [...]
View Answer
| December 23, 2008 7:36 PM
Cisco, Cisco 6500, Cisco 6500 Series Catalyst Switch, Cisco switch QoS, Cisco switches, Edge switches, QoS, QoS configuration, Quality of Service, Switch configuration, Switches
Configure QoS Let’s review the steps to configuring QoS on a Cisco router. Step 1: Define the traffic You must tell the router which traffic you want to give QoS, which you can accomplish either using an access control list (ACL) or using Network Based Application Recognition (NBAR). An ACL is the traditional way to [...]
View Answer
| December 23, 2008 7:36 PM
Cisco, Cisco 6500, Cisco 6500 Series Catalyst Switch, Cisco switch QoS, Cisco switches, Edge switches, QoS, QoS configuration, Quality of Service, Switch configuration, Switches
How to block P2P applications in PIX 525 firewall
See this <a href=”http://itknowledgeexchange.techtarget.com/itanswers/using-switch-or-router-acl-to-block-streaming-traffic/”>question & answers</a>. Maybe they will help.
View Answer
| December 22, 2008 1:04 PM
Application firewalls, Cisco, Cisco PIX, Cisco PIX 525, Firewalls, Network security, P2P, P2P applications, P2P blocking, Peer-to-Peer file sharing, PIX, PIX 525, PIX 525 firewall
See this <a href=”http://itknowledgeexchange.techtarget.com/itanswers/using-switch-or-router-acl-to-block-streaming-traffic/”>question & answers</a>. Maybe they will help.
View Answer
| December 22, 2008 1:04 PM
Application firewalls, Cisco, Cisco PIX, Cisco PIX 525, Firewalls, Network security, P2P, P2P applications, P2P blocking, Peer-to-Peer file sharing, PIX, PIX 525, PIX 525 firewall
tracking a message
This <a href=”http://ask-leo.com/how_can_i_trace_where_email_came_from.html”> article </a> does a very good job explaining how to trace e-mail, and the many ways that the trace can end up being useless. There is a lot of good info here though. Good Luck! -Flame
View Answer
| December 17, 2008 8:52 PM
ISP, Message Tracing, Message tracking
This <a href=”http://ask-leo.com/how_can_i_trace_where_email_came_from.html”> article </a> does a very good job explaining how to trace e-mail, and the many ways that the trace can end up being useless. There is a lot of good info here though. Good Luck! -Flame
View Answer
| December 17, 2008 8:52 PM
ISP, Message Tracing, Message tracking
Switching ISPs and need help reconfiguring VPN and Firewall settings
If you are going to change from DSL to Cable, you will not be able to keep the Static IP addresses you currently have. The Router will have to be reconfigured to accept the new IP Address and Subnet that is being passed to it. What router are you using? that is the question.
View Answer
| December 16, 2008 3:13 PM
Cable ISP, Firewalls, ISP, Router configuration, Routers, Static IP address, VPN, VPN configuration
If you are going to change from DSL to Cable, you will not be able to keep the Static IP addresses you currently have. The Router will have to be reconfigured to accept the new IP Address and Subnet that is being passed to it. What router are you using? that is the question.
View Answer
| December 16, 2008 3:13 PM
Cable ISP, Firewalls, ISP, Router configuration, Routers, Static IP address, VPN, VPN configuration
