Hi CISCO-806 & T-DSL Business-Online Flat-Rate Inhaber, einen CISCO 806R als DHCP-Server, Zeit-Server und nebenbei auch noch als DSL-Router ohne Sicherheitsluecken einzusetzen ist eigentlich nicht die Schwierigkeit, schwierig wird's nur, wenn man bei NULL anfaengt. ;-)Daher hier ein umfangreiches, funktionierendes Beispiel mit ein paar self-test CheckUp's zur Qualitaetskontrolle.I hope, it'll helps, BitH...
Fragen zum Thema kann BitH im BBS bestimmt auch nicht beantworten. ;-)Viel Spass beim Ausprobieren.Using 2978 out of 131072 bytes ! ! Last configuration change at 22:08:57 MESZ Sat Aug 16 2003 ! NVRAM config last updated at 13:41:56 MESZ Sun Aug 24 2003 ! version 12.2 no service pad service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname < MYhostNAME > ! logging queue-limit 100 no logging buffered enable secret 5 < myENABLEsecretMD5password > enable password < MYenableCLEARtextPASSWORD > ! username < MYuserNAME > privilege 15 password 0 < myMD5userPASSWORD > clock timezone MESZ 1 clock summer-time MESZ recurring last Sun Mar 2:00 last Sun Oct 3:00 ip subnet-zero ip dhcp excluded-address aaa.bbb.ccc.1 aaa.bbb.ccc.99 ip dhcp excluded-address aaa.bbb.ccc.200 aaa.bbb.ccc.255 ! ip dhcp pool CLIENT import all network aaa.bbb.ccc.0 255.255.255.0 default-router aaa.bbb.ccc.1 domain-name my.domain netbios-node-type h-node lease 30 ! vpdn enable ! vpdn-group 1 request-dialin protocol pppoe ip mtu adjust ! ! ! ! ! ! ! interface Ethernet0 description LAN-Interface to DMZ ip address aaa.bbb.ccc.1 255.255.255.0 ip nat inside ip tcp adjust-mss 1452 no ip mroute-cache ntp broadcast destination aaa.bbb.ccc.255 hold-queue 100 out ! interface Ethernet1 description T-DSL BOL Anschluss no ip address no ip mroute-cache load-interval 30 pppoe enable pppoe-client dial-pool-number 1 ! interface Dialer1 ip address negotiated ip mtu 1492 ip nat outside encapsulation ppp ip tcp adjust-mss 1452 load-interval 30 dialer pool 1 dialer-group 1 ppp authentication chap pap callin ppp chap hostname t-online-com/000000000000@t-online-com.de ppp chap password 0 < myBOLclearTEXTpassword > ppp pap sent-username t-online-com/000000000000@t-online-com.de password 0 < myBOLclearTEXTpassword > ppp ipcp dns request ppp ipcp wins request ! ip nat inside source list 102 interface Dialer1 overload ip classless ip route 0.0.0.0 0.0.0.0 Dialer1 254 no ip http server no ip http secure-server ! ! access-list 23 permit aaa.bbb.ccc.0 0.0.0.255 access-list 102 permit ip aaa.bbb.ccc.0 0.0.0.255 any dialer-list 1 protocol ip permit banner motd \ CISCO 806-R - DSL-Router - Fa. Mustermann GmbH & Co.AG Hallo Besucher ! Wenn Du nicht explizit vom Eigentuemer, Besitzer bzw. Betreiber dieses Systems mit Wartungsarbeiten betraut wurdest, befindest Du Dich illegal auf diesem System !!! Diese Zuwiderhandlung kann nach dem deutschen Datenschutzgesetz, sowie auch nach internationaler Rechtsgebung strafrechtlich verfolgt werden ! Entsprechende Nachweise in Form von Log-Dateien, Verbindungsdaten sowie durch- gefuehrte Aktionen werden protokolliert und koennen zur Verfolgung dieser Straftaten gerichtlich herangezogen werden. Mit anderen Worten: Tschuess, geh woanders spielen ! \ ! line con 0 logging synchronous stopbits 1 line vty 0 4 access-class 23 in exec-timeout 120 0 password < MYconnectCLEARtextPASSWORD > login length 0 ! scheduler max-task-time 5000 ntp clock-period 17178546 ntp source Dialer1 ntp master 10 ntp server 192.43.244.18 ntp server 131.188.3.220 prefer end
Interface IP-Address OK? Method Status Protocol Ethernet0 aaa.bbb.ccc.1 YES NVRAM up up Ethernet1 unassigned YES NVRAM up up Virtual-Access1 unassigned YES unset up up Virtual-Access2 unassigned YES unset up up Dialer1 80.134.ccc.ddd YES IPCP up up
Sonst noch Fragen: mailto:BitH im BBS.Cisco Internetwork Operating System Software IOS (tm) C806 Software (C806-K9OSY6-M), Version 12.2(15)T2, RELEASE SOFTWARE (fc2) TAC Support: http://www.cisco.com/tac Copyright (c) 1986-2003 by cisco Systems, Inc. Compiled Thu 01-May-03 14:41 by nmasa Image text-base: 0x80013170, data-base: 0x80A8FBE0 ROM: System Bootstrap, Version 12.2(4r)XM3, RELEASE SOFTWARE (fc1) MYhostNAME uptime is 2 hours, 19 minutes System returned to ROM by power-on System restarted at 11:36:56 MESZ Sun Aug 24 2003 System image file is "flash:c806-k9osy6-mz.122-15.T2.bin" This product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer and use. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute or use encryption. Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately. A summary of U.S. laws governing Cisco cryptographic products may be found at: http://www.cisco.com/wwl/export/crypto/tool/stqrg.html If you require further assistance please contact us by sending email to export@cisco.com. CISCO C806 (MPC855T) processor (revision 0x501) with 30720K/2048K bytes of memory. Processor board ID FOC065203UB (2683969583), with hardware revision 0000 CPU rev number 0 Bridging software. 2 Ethernet/IEEE 802.3 interface(s) 128K bytes of non-volatile configuration memory. 8192K bytes of processor board System flash (Read/Write) 2048K bytes of processor board Web flash (Read/Write) Configuration register is 0x2102
Ein im enabled-Mode abgesetztes sh ntp sta sollte ungefaehr folgendes offenbaren:address ref clock st when poll reach delay offset disp *~192.43.244.18 .ACTS. 1 23 64 377 205.5 -463.6 64.8 ~127.127.7.1 127.127.7.1 9 22 64 377 0.0 0.00 0.0 ~131.188.3.220 0.0.0.0 16 - 512 0 0.0 0.00 16000. * master (synced), # master (unsynced), + selected, - candidate, ~ configured
Laufzeit des Routers zum Zeitpunkt dieser Angaben ca. 9h.Der Router funktioniert, so wie man sich's wuenscht, auch als ntp-Server innerhalb des LANs.Clock is synchronized, stratum 2, reference is 192.43.244.18 nominal freq is 250.0000 Hz, actual freq is 250.0217 Hz, precision is 2**20 reference time is C2F39205.57BA115F (21:35:33.342 MESZ Sun Aug 24 2003) clock offset is -463.6277 msec, root delay is 205.49 msec root dispersion is 528.49 msec, peer dispersion is 64.85 msec