
 ISDN TA Ͽ ͳݿ ϴ 
----------------------------------------------------------
̹ TA Ͽ ISDN  ͳݿ
ٸ PC ȸ ϴ  ϰ մϴ.
                     1999.05.12 3°  1999.04.19ó
                      baram88@soback.kornet.net
----------------------------------------------------------


1.
2.Ʈȯ 
  2.1 븦 ȯ 
  2.2  ڽ Ʈ ϰ Ʈ  Ѵ.
3. ڽ ͳ ϱ
  3.1 غ 
  3.2  PPP  
  3.3  DNS
  3.4 ͳ Ӹ
4.ٸ PC ISDN  ͳݼ ϱ
  4.1 ڽ IP Masquerade 
  4.2 ɷ̵  
  4.3 95 Ʈ(Ŭ̾Ʈ)
5. 
6.

-------------------------

1.

 ڽ ISDN 1ȸ  ǻͰ ͳ ؼ ϴ
 Ұ ϰ մϴ.

 ¥  5.2  ڳ   ϰմϴ.

׸ ٸ ȯ Ͻø  Ź帳ϴ.

2.Ʈȯ 

2.1 븦 ȯ 

 PC LAN ī带 ġϰ    Ʈ մϴ.
ڼ  ٸ   Ͻñ ٶϴ.

2.2  ڽ Ʈ ϰ Ʈ  Ѵ.

̳뵵 ٸ  ϼ մϴ.

3. ڽ ͳ ϱ

3.1 غ 

 NT TA   (⼭  ȴϸԴϴ.)
 -.ƼũPPP  (ǰ޴  ̴ϴ.)
ISP              (⼭ ڳ  ϴ.)
 -.ISDN ȭȣ
 -.̵,н
 -.DNS ּ
ڽ           ( Ƽ 166 Դϴ.)
¥ RedHat 5.2      ( 9,900 ؼ ġ߽ϴ.)

3.2  PPP  

ϴ ISDN ISP(ڳ) ϱ ؼ MultiLink PPP   ϱؼ 
PAP   ؾ մϴ.

ȭ Ͽ   ȭ

/etc/sysconfig/network-scripts/ifcfg-ppp0 - PPPȭԴϴ.
/etc/sysconfig/network-scripts/chat-ppp0  - ȭɱ ũƮȭ Դϴ.

 ȭ
/etc/ppp/pap-secrets            - Passwd ϴ ȭ Դϴ.

ȭԴϴ.
X-Window  ǿ ۾ϸ ϴ.
⼭ ׳ ڽϴ.

/etc/sysconfig/network-scripts/ifcfg-ppp0 ȭ Դϴ.
----------------------
PERSIST=yes           -ȭ   ٽ Ŵ 
DEFROUTE=yes          -̽ Ȱȭ Ʈ Ʈ̷   
ONBOOT=no             -ǻ͸ Ѹ ڵ ǰ  ΰ 
INITSTRING=           - ʱȭ
MODEMPORT=/dev/ttyS1  -øƮ ⼭ COM2 Ǿ
LINESPEED=115200      - ӵ
ESCAPECHARS=yes       -Ȯ   ڳ ӽ yes ؾ 밡
DEFABORT=yes
HARDFLOWCTL=yes       -帧 ⼭ ϵ
DEVICE=ppp0                
PPPOPTIONS=
DEBUG=yes
PAPNAME=bs0600        -ڳ (ID) ݴϴ.
REMIP=
IPADDR=
BOOTPROTO=none
MTU=
MRU=
DISCONNECTTIMEOUT=
RETRYTIMEOUT=
USERCTL=yes           -root  ƴ Ϲݰ Ӱɿ  ⼭
----------------------      Ϲ ڰ Ӱϵ Ͽ

øƮ   ϴ.

com1   --->   /dev/ttyS0
com2   --->   /dev/ttyS1
com3   --->   /dev/ttyS2
com4   --->   /dev/ttyS3

ڼ  Serial-HOWTO Ͻʽÿ.

/etc/sysconfig/network-scripts/chat-ppp0 ȭ Դϴ.
----------------------
'ABORT' 'BUSY'
'ABORT' 'ERROR'
'ABORT' 'NO CARRIER'
'ABORT' 'NO DIALTONE'
'ABORT' 'Invalid Login'
'ABORT' 'Login incorrect'
'' 'ATZ'
'OK' 'atb40&j3'       -̸ MultiLinjkPPP  
'OK' 'ATDT01414'      -ȭɱ Դϴ.
'CONNECT' ''
----------------------

ISDN ͳݿ 128K Ϸ ISDN TA
MultiLink PPP  Ǿ մϴ.
ISDN TA MultiLink PPP  ܸȸ縶 Ʋϴ.
⼭  "ȴ" ʱȭԴϴ.
ȭȣ  ISP(ͳݰԾü) Ʋϴ. 
⼭ ڳ ӹȣԴϴ.

/etc/ppp/pap-secrets ȭ Դϴ.
----------------------
# Secrets for authentication using PAP
# client	server	secret			IP addresses

bs0600  	*	1234      - ̷ ָ ˴ϴ.
jungang 	*	1234      - ٸ   ...
jungang  	ppp0	1234
jungang         ppp1    1234
----------------------
ID bs0600 н尡 1234   ݴϴ.

׷ ѹ Ȯ ڽϴ.

[kskim@ja network-scripts]$ ls -l
total 18
-rw-------   1 root     root        188 Apr 12 21:17 chat-ppp0      <---  ȭϰ
-rwxr-xr-x   1 root     root        392 Apr 19 08:23 ifcfg-eth0*
-rwxr-xr-x   1 root     root        115 Apr 13 12:54 ifcfg-lo*
-rw-r--r--   1 root     root        264 Apr 13 12:54 ifcfg-ppp0     <---  ȭ 
-rwxr-xr-x   1 root     root        445 Oct 16  1998 ifdhcpc-done*
lrwxrwxrwx   1 root     root         20 Jan 29 08:44 ifdown -> ../../../sbin/ifdown*
-rwxr-xr-x   1 root     root        267 Oct 16  1998 ifdown-post*
-rwxr-xr-x   1 root     root       1191 Oct 16  1998 ifdown-ppp*
-rwxr-xr-x   1 root     root        907 Oct 16  1998 ifdown-sl*
lrwxrwxrwx   1 root     root         18 Jan 29 08:44 ifup -> ../../../sbin/ifup*
-rwxr-xr-x   1 root     root        975 Oct 16  1998 ifup-aliases*
-rwxr-xr-x   1 root     root       1023 Oct 16  1998 ifup-ipx*
-rwxr-xr-x   1 root     root        724 Oct 16  1998 ifup-plip*
-rwxr-xr-x   1 root     root        727 Oct 16  1998 ifup-post*
-rwxr-xr-x   1 root     root       2817 Apr 16 08:05 ifup-ppp*
-rwxr-xr-x   1 root     root        481 Oct 16  1998 ifup-routes*
-rwxr-xr-x   1 root     root       1564 Oct 16  1998 ifup-sl*
-rw-r--r--   1 root     root       1084 Oct 16  1998 network-functions
[kskim@ja ppp]$ ls -l
total 5
-rw-------   1 root     daemon       78 Jun  8  1998 chap-secrets
-rwxr-xr-x   1 root     root        265 Oct 16  1998 ip-down*
-rwxr-xr-x   1 root     root        349 Oct 16  1998 ip-up*
-rw-r--r--   1 root     daemon        5 Jun  8  1998 options
-rw-------   1 root     daemon      300 Apr 16 10:13 pap-secrets    <---- ȭ Ǿϴ.

׸ ¥  5.2   ȭ ϳ ֽϴ.

/etc/sysconfig/network-scripts/ifup-ppp ȭ մϴ.
----------------------
#!/bin/sh
PATH=/sbin:/usr/sbin:/bin:/usr/bin

# ifup-post for PPP is handled through /etc/ppp/ip-up

 -- ߷ --
if [ "${ESCAPECHARS}" = yes ] ; then
  opts="$opts asyncmap FFFFFFFF"     <--- ̺κ ؾ մϴ.
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  opts="$opts asyncmap 00000000"     <--- ̷ ؾ մϴ.
fi
 -- ߷ --
  # exit if our lock file disappeared while we slept
  if [ ! -f /var/run/ppp-$DEVICE.dev ]; then
    exit 0
  fi
done
----------------------

3.3  DNS

׸ ͳ ùٷ ȰϷ DNS (γӼ)  ؾ մϴ.
 ּ  ڸ soback.kornet.net 168.126.3.3  IPּҷ 
ִ  մϴ.

 ȭ
/etc/resolv.conf
---------
search kt.co.kr co.kr com    <---- ޺κ   ãƺ 
nameserver 127.0.0.1         <---- ڽ ü Ӽ  
nameserver 168.126.63.1      <---- ϴ ISP DNSּ ⼭ ڳ 
nameserver 168.126.63.2      <---- ϴ ISP DNSּ
---------
 ڽ DNS   ʴ´ٸ 127.0.0.1   .
׸ ⼭ DNSּҴ ͳݼ񽺸 ޴ ISP Ͻø ˼ ֽϴ.


3.4 ͳ Ӹ

 ͳݿ Ӹ Էմϴ.

[kskim@ja kskim]$/etc/sysconfig/network-scripts/ifup /etc/sysconfig/network-scripts/ifcfg-ppp0 []
ġø ˴ϴ.

Ǿ Ʒ  Ȯΰմϴ.

[kskim@ja kskim]$/sbin/ifconfig
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Bcast:127.255.255.255  Mask:255.0.0.0
          UP BROADCAST LOOPBACK RUNNING  MTU:3584  Metric:1
          RX packets:62906 errors:0 dropped:0 overruns:0 frame:0
          TX packets:62906 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 

eth0      Link encap:Ethernet  HWaddr 00:60:97:5B:1A:BD  
          inet addr:168.248.138.150  Bcast:168.248.138.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1506562 errors:32 dropped:0 overruns:0 frame:62
          TX packets:1369149 errors:0 dropped:0 overruns:0 carrier:135
          collisions:256966 
          Interrupt:10 Base address:0x6400 

ppp0      Link encap:Point-to-Point Protocol                         <--- PPP ν Ǿ Ÿϴ.
          inet addr:168.126.43.48  P-t-P:168.126.43.2  Mask:255.255.0.0
          UP POINTOPOINT RUNNING  MTU:1524  Metric:1
          RX packets:26198 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16229 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 
          Memory:4dc3038-4dc3c34 

[kskim@ja kskim]$/sbin/route
Kernel IP routing table
Destination     Gateway        Genmask         Flags Metric Ref  Use Iface
168.126.43.2    *              255.255.255.255 UH    0      0      1 ppp0   <--- ڳ ӵǾϴ.
168.248.138.0   *              255.255.255.0   U     0      0    162 eth0   <--- θԴϴ.
127.0.0.0       *              255.0.0.0       U     0      0     83 lo
default         168.126.43.2   0.0.0.0         UG    0      0    196 ppp0   <--- Ʈ Ʈ̷ 

 Ǿ Ping Test غϴ.

[kskim@ja kskim]$ping home.hitel.net
PING home.hitel.net (203.245.15.254): 56 data bytes
64 bytes from 203.245.15.254: icmp_seq=0 ttl=249 time=117.7 ms
64 bytes from 203.245.15.254: icmp_seq=1 ttl=249 time=60.1 ms
64 bytes from 203.245.15.254: icmp_seq=2 ttl=249 time=60.1 ms
64 bytes from 203.245.15.254: icmp_seq=3 ttl=249 time=60.1 ms
64 bytes from 203.245.15.254: icmp_seq=4 ttl=249 time=60.1 ms
64 bytes from 203.245.15.254: icmp_seq=5 ttl=249 time=60.1 ms
64 bytes from 203.245.15.254: icmp_seq=6 ttl=249 time=60.1 ms
64 bytes from 203.245.15.254: icmp_seq=7 ttl=249 time=70.1 ms

--- home.hitel.net ping statistics ---
8 packets transmitted, 8 packets received, 0% packet loss
round-trip min/avg/max = 60.1/68.5/117.7 ms

 Ǿ   մϴ.

ͳ   Ʒ ϴ.

[kskim@ja kskim]$/etc/sysconfig/network-scripts/ifdown /etc/sysconfig/network-scripts/ifcfg-ppp0 []

Ͻø ˴ϴ.

   ιġ ø
[kskim@ja kskim]$cd /etc/sysconfig/network-scripts/ []
[kskim@ja network-scripts]$./ifdown ./ifcfg-ppp0 []
Ͻø ˴ϴ.


4.ٸ PC ISDN  ͳݼ ϱ

WIN95 ġ ٸ PC  ڽ Ͽ ͳ    ֽϴ.
 IP Masquerade  Ͻø ˴ϴ.

4.1 ڽ IP Masquerade 

ڼ  http://kldp.org/network.html 
* IP Masquerade mini HOWTO ѱ   Ͻñ ٶ 

⼭ ϰ  ϰڽϴ.

ϴ root ۾Ϸ
[kskim@ja kskim]$su []
Passwd:   <---⼭ root н Է [] Ĩϴ.
׸

 IP Forwarding  ϵ  ݴϴ.
 ȭ 
/etc/sysconfig/network Դϴ.
-------
NETWORKING=yes
FORWARD_IPV4="yes"          <---- Ⱑ "yes" Ǿ ־ մϴ.
HOSTNAME="ja.kotel.co.kr"   <----  PC Ʋϴ.
DOMAINNAME=kotel.co.kr      <---- ⵵ PC Ʋϴ.
GATEWAY=""
GATEWAYDEV=""
-------

׸ Ʈ õ

[root@ja kskim]#/etc/rc.d/init.d/network restart [] Ͻð..

׸ ipfwadm IP Masqerade  ݴϴ.

[root@ja kskim]#/sbin/ipfwadm -F -p deny
[root@ja kskim]#/sbin/ipfwadm -F -a m -S 168.248.138.0/24 -D 0.0.0.0/0  []ġø ˴ϴ.

⼭ 168.248.138.0/24  168.248.138.0 Ʈ  ȣƮ 
ܺ(ڳ  ͳ)  ϵ ִ Դϴ.

 ȣƮԸ ַ 168.248.138.145/32  ɼ ָ 168.248.138.145ȣƮ
 ܺη Ӱմϴ.

׸ ý  ŷӰ Էϱ ø

/etc/rc.d/rc.sysinit ȭ ޺κп Ʒ ߰
----------------------
/sbin/ipfwadm -F -p deny
/sbin/ipfwadm -F -a m -S 168.248.138.0/24 -D 0.0.0.0/0
----------------------
 ָ ˴ϴ.

* /etc/rc.d/rc.sysinit Ǵ /etc/rc.d/rc.local ȭ ޺κп ּŵ ˴ϴ.

4.2 ɷ̵  

׸ FTP Ư񽺸 Ͻ÷   ؾ մϴ.

׷  øϴ.

[root@ja kskim]# modprobe ip_masq_ftp     [Enter]   <--- FTP ϱ
[root@ja kskim]# modprobe ip_masq_raudio  [Enter]   <--- RealAudio ϱ
[root@ja kskim]# modprobe ip_masq_vdolive [Enter]   <--- ... ϱ

޹ ý ϱ ø

/etc/rc.d/rc.local ȭ ޺κп ߰ ݴϴ.

4.3 95 Ʈ(Ŭ̾Ʈ)

 ڸ
95 ƮƮ̸ ڽ IPּҷ ϼž մϴ. 
98  մϴ.



95 ""޴ Ŭ
"" - 
"" 
"Ʈũ" Ŭ
"Ʈũ " 
"TCPIP - 3Com Etherlink III" Ŭ  - ī忡  TCP/IP ī忡  Ʋ
"" Ŭ
"Ʈ" Ŭ
" Ʈ"׸ ڽ ī IPּ(ǰ 168.248.138.150) ݴϴ.
"߰(A)" Ŭϸ

"ġ Ʈ"  ش IP Դϴ.
׸
"Ȯ" Ŭϰ  ϶ ޼ ɴϴ.

ϸ   ڽ  ͳ(ڳ)   ֽϴ.

 ᵵ Ʒ ϴ.

PC 1 Win95 
IP   168.248.138.2  -----+
Mask 255.255.255.0       |
Gw   168.248.138.150     |                                        INTERNET
                         |                                              |
PC 2 Win95               |         Linux Box                            |
IP   168.248.138.3  -----+---- eth0 -------- ppp0 ------- Kornet ISDN --+
Mask 255.255.255.0       |             IP 168.126.43.2    01414
Gw   168.248.138.150     |  IP 168.248.138.150            IP 168.126.43.48
                         |  Mask 255.255.255.0
PC 3 Win95               |
IP   168.248.138.4  -----+
Mask 255.255.255.0
Gw   168.248.138.150

⼭ γƮּҸ ο ޾ұ  168.248.138.0 Ʈ Ͽ

Ϲδ γƮ   192.168.0.0 Ʈ߿ 

Ѵ ؼ ϸ ˴ϴ. )192.168.1.0 ̳ 192.168.2.0 


5.   

* WIN95 ӿ䱸( ߸) ڵ ȭɱ  Diald ġѴ.
     --> RedHat 4.2  ġ  ִµ 2 ٵǾµ    ϴ.

* Ǵ ȯ濡 PPP On Off Ѵ. -->  ð  øڽϴ.


6.

ISDN 1ȸ Ǵ  1ȸ  ַ Ѵٸ ӵϾ ͳ
Ҽ ־ ȭḦ Ƴ ִ. ַ ߼ұ PC 10  
 ϱ⿡ ٰ մϴ.


P.S

Ȥ Ʋ ߽߰ó     ִٰ Ͻø
  ֽø ڽϴ.

ٸ  ÿ   ּ ڽϴ.


1999.04.19.

 
baram88@soback.kornet.net
baram88@kt.co.kr
baram88@kebi.com
http://www.uijongbu.co.kr
http://baram88.dns4u.com


-----
*   
  -.ȭȣ : 02-3674-0001 ISDN
                   01432         56k
  -.DNS : 204.252.145.2 
  -.DNS : 204.252.145.10 

* 𵨺 ML-PPP <--   غýϴ.
  -.Digitel DTA-200U : AT$V=2    <---  OEM ǰ
  -. ȴ : ATB40&J3
  -.I&T Telecom TA-3000US : AT&O27  <--- ڼ OEM ǰ 
     128K  ȵɽ ߿ ׷̵ ʿ.
  -.۳Ʈ NTA MLPPP ϴ. 64K ž Ұ ϴ.
     (籤 kssa@hanmail.net ϰ ʴϴ.)

* Ͻź̳ ̹ ϰ ź  ISP ȭȣ MLPPPɵ 
  Ϸ ֽø ڽϴ.