Category Archives: Networking

Net Neutrality

Recently a colleague sent me a link to an online petition regarding the concept of Net Neutrality being under threat by a recent deal between Verizon and Google.  http://www.commoncause.org/site/pp.asp?c=dkLNK1MQIwG&b=1234951 The dialog signals a prioritisation of internet traffic for the rich, … Continue reading

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UUID’s in Java

UUID’s are useful for making unique reference numbers of things.  In an ideal world these UUIDs are so long, they never collide. The first place to discuss UUIDs would be RFC 4122.  The next part would be the wikipedia entry … Continue reading

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Of Cisco, Tcl and Java

Whilst busily reading up on Scala and Groovy and other languages that ran on the JVM, I had a thought with regard to the scripting language that the network architect at work now advises is included in the Cisco ISG/ASR’s.  … Continue reading

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RSA Client Downloads

RSA clients for windows from 5.2 -> 7.0 Both 64 bit and 32 bit versions. Am using the remote agent with 6.1 on Vista Ultimate and everything is hunky dory. What prompted me to upgrade was a recent Vista SP1 … Continue reading

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Quick guide to router config

>enable (en)  go from user to privelaged mode #configure terminal (conf t)  Enter configuration mode (config)# hostname YourCustomName Put a hostname on the router (config)# enable secret pass Enable a password on the router when entering privelage mode.  Stored in … Continue reading

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Trace Route

Send pings to successive routers, along the path to the destination.  Sends 3 packets to each destination

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Netstat flags

-a -e -n -s (statistics) -rn (routing table) H:\>netstat -rn Route Table =========================================================================== Interface List 0×1 ……………………… MS TCP Loopback interface 0×2 …00 13 72 7e e0 8d …… Broadcom NetXtreme Gigabit Ethernet #3 – Eacfilt 0×3 …44 45 53 54 … Continue reading

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Display DNS

Havent come across this one before.  H:\>ipconfig /displaydns Windows IP Configuration          ns1.cisco.com          —————————————-          Record Name . . . . . : ns1.cisco.com          Record Type . . . . . : 1          Time To Live  . … Continue reading

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DTE / DCE Connection rule

DTE    DCE   Router      Hub PC            Switch Vertically means straight through Horizontally means crossover

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It’s not cheating if you blog using OneNote 07

Wow. What a stupidly technological week. If doing I.T. was like eating fruit, I’d have a severe case of the runs.   Database Modelling Ok, so the first interesting item this week was our Domain Model. A domain model, for … Continue reading

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