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Young-Sun La

rays@nida.or.kr

NIDA (National Internet Development Agency )

.kr DNS Monitoring System

Overview

.kr DNS Monitoring System

Overview

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B, Seoul (KT)

F, Seoul (Hanaro)

E, Daejeon (KISTI)

G, Seoul (NIDA)

Mirror,Frankfurt (NIDA)

C, Anyang (Dacom) D, Redwood(NIDA)

Mirror,KINX (NIDA)

Mirror,Dulles (NIDA)

2006. 8.2006. 8. 552005. 8.2005. 8.

2008. 3.2008. 3.Mirror,Beijing (NIDA)

2006. 10.2006. 10.

.kr DNS Deployment Status

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Ⓑ

ⒸⒹ

Ⓔ

Ⓕ

kr DNS Monitoring SystemMain page

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kr DNS Monitoring SystemMain page ( updated every 5 seconds )

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kr DNS Monitoring SystemMain page ( kr query per nation )

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What main page shows....

kr DNS Monitoring System

1) kr DNS Traffic, Performance , total value

2) kr DNS name server traffic, server resources, performances

3) Nameserver locations, and links to Display box

4) Showing AnyCast DNS

5) pop-up Window information

   - Source IP TOP10

   - ISP TOP 10

   - Every nation query status

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with sub pages

kr DNS Monitoring System

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What they (sub pages) show...

Network traffic, server resources, DNS performance,

every servers’ query statistics

each .kr DNS optional information

- today, last week, last month, current

- MAX, MIN, AVG values

kr DNS Monitoring System

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classify category Collecting method

Network traffic BPS(Byte Per Second)

PPS(Packet Per Second)

Packet analysis

Server resources CPU, DISK, Memory System command

DNS performance/DNS query amount

QPS(Query Per Second)

RPS(Response Per Second)

Packet analysis

DNS performance/DNS contact speed

RTT(Round Trip time)

Route Hop Count

DIG

DNS query/DNS query target

Source IP TOP100

Target Domain TOP100

Packet analysis

DNS query/DNS query Type

Query Type Packet analysis

DNS query/DNS query distribution

Query per nation

Query per ISP

Packet analysis

kr DNS Monitoring System

category of collecting information

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kr DNS Monitoring SystemH/W components

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• DB server : Solaris(OS), oracle

• Web server : Tomcat, Redhat(OS), OZ Report(chart, graphic), flash, java, jsp

• analysis/admin server : Solaris(OS)

• back-up server : Redhat(OS), oracle

kr DNS Monitoring System

S/W components

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• operation rate improvement

– improve process, data transfer and administration

– reduction of daemons, reduction of load

• consideration apply standard S/W (open source)

– packet analysis tool : DNSCAP

– graphic/chart : Java. PHP

kr DNS Monitoring System

Rooms for improvement

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• we need to statistics IPv6 query per nations, and ISP

=> IPv6 address deployment plan

• we need to more security

- passive management : SMS delivery, alarm

- active management : IP Blocking

kr DNS Monitoring System

Rooms for improvement

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• Conversion (Web1.0 -> Web2.0 )

Ajax(Asynchronous Javascript And XML)

> merits

- without page movement. quick display conversion

- don’t need to wait server’s handling, asynchronous request is possible.

- can reduce receive data amount. make the client handles it (delegation)

> demerits

- some browser couldn’t support Ajax.

- Http client’s function is limited.

- security problem (communication without page movement)

- supported Char-set are limited.

- Debugging is hard, ‘cause editing is with script.

kr DNS Monitoring System

Rooms for improvement

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Thank YouThank You