Hyunho.Ji

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Operating System - OS

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Medicine and Public Health from Roman Britain to c1350

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Resume : Hyunho.Ji

Shell

OverLoad.sh

3. If over limit?

4. Logging + Kill

2. Parsing + Check

1. Confirm Process List(ps,top)

Check Process to use high resources

CPU, Memory

iptables - patch

Example>

Mac: 00:E0:4C:C5:1A:38

String:

Multiclass: 10.10.2.0~10.10.5.128

B class: 10.10.0.0/16

2. Apply iptables INPUT, OUTPUT

1. Parsing hosts.allow(deny)

Apply IP,MAC,String List by hosts.deny, hosts.allow

ARP.sh

4. Confirm Admin Webpage

3. Parsing to duplicate MAC address

2. show arp table

1. Connect CISCO Switch

Monitering ARP table

move.sh

Algorithm>

7. Move Original Data to temporary

6. Connect DNS server + change IP

5. Copying Data + Decompress

4. Make User(+db,mail)

3. Connect Remote other server

2. Compress User data

1. Analyze User imformation

move user other to server from original server(Data: FTP, DB, Mail)

Used by sed,awk,sort,grep,expect,bash(for,while,case,if...)

Basic Experience

Security

IDS by snort + QOS

L2 ~ L7 Packet Access Control

Traffic Control by Bridge

Web Application Firewal

Limit to Packet per second

Patch for Netfilter-Iptables Script

Network

Monitering by nagios + mrtg

Network Design by cisco 3750 Switch

Server

Rsync(backup)

DNS(djb-dns)

qmail + vpopmail + roundcube

APM(compile by Apache, php+gd, mysql)

Kernel Rebuild

Manage network & server by 6 yesars

License

CCNA

CISCO 2007.01

Linux Master 1

IHD by Korea 2002.07

Educatioin

University of Sogang

Master's course 2009.03 ~

Imformation systems & security

University of Yongin

2001.03 ~ 2008.08

Computer imformation

Profile

Cell:82-10-4786-1985, Email: mnnclub@gmail.com

Address

605-612 Dosigebal APT, Suso-dong

GangNam-gu, Seoul, Korea 135-220