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Lancom 1711+ VPN manual

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Table of contents for the manual

  • Page 1

    110642/0109 LANCOM Systems GmbH Adenauerstr . 20/B2 52146 Würselen Germany E-Mail: info@lancom.eu Internet www .lancom.eu LANCOM 821+ LANCOM 1711+ VPN LANCOM 1721 VPN LANCOM 821+ LANCOM 1711+ VPN LANCOM 1721 VPN 쮿 Handbuch 쮿 Manual ...co nnecti ng you r bus iness 110642_LC-821plus-1711plus-1721-1 1 110642_LC-821plus-1711plus-1721-1 1 07.01.200[...]

  • Page 2

    LA NCOM 821+ LANC OM 1711+ VPN LANC OM 1721 VPN[...]

  • Page 3

    © 2009 LANCOM Systems GmbH, Wuersele n (Germany). All rights r eserved. While the informat ion in this manual has been compiled wit h great care , it may not be deemed an assurance of pr oduct characteristics. LANCOM System s shal l be liable onl y to the degre e specified in the t erms of sale and del ivery . The repr oduction and distribution of[...]

  • Page 4

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Preface 3 EN Preface Thank you for placing your trust in this LANCOM Systems produ ct. With the LANCOM Rou ter you have chos en a powerful r outer that possesses integrated DSL respectively ADSL and ISDN int erfaces by default as well as an integrated 4- port switch. Wi th this route r you c[...]

  • Page 5

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Preface 4 EN Y ou are now reading the user manual. It contains all information you need to put your devi ce in to o per ati on. I t als o contains all of th e important technical specifica tions. The reference manual can be found on the LANCOM product CD as an Acrobat (PDF) document. It is [...]

  • Page 6

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Preface 5 EN contact addresses of LANCOM support, please se e the enclosed leaf- let or the LANCOM Systems website. Information symbols  V ery important inst ructions. Fail ure to obser ve this may r esult in damage.  Important i nstruction that should be observed.  Additional in fo[...]

  • Page 7

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Contents 6 EN Contents 1 Introduction 9 1.1 How do ADSL and ADSL 2+ work? 9 1.2 What does VPN offer? 10 1.3 What can your LANCOM Router do? 11 2 Installation 14 2.1 Package contents 14 2.2 System requirements 14 2.3 Status displays, interfac es and hardware installation 15 2.3.1 Stat us dis[...]

  • Page 8

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Contents 7 EN 5 Linking two networks 40 5.1 What informat ion is necessary? 41 5.1.1 General informati on 41 5.1.2 Setti ngs for the TCP/IP router 43 5.1.3 Setti ngs for the IPX route r 44 5.1.4 Setti ngs for NetBIOS rou ting 45 5.2 Instructions for LANconfig 46 5.3 1- C lick- VPN for networ[...]

  • Page 9

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Contents 8 EN 9 Troubleshooting 65 9.1 No WAN connection is established 65 9.2 DSL data transfer is slow 65 9.3 Unwanted connections under Windows XP 66 9.4 Cable testing 66 10 Appendix 68 10.1 Performance data and specifications 68 10.2 Contact assignment 69 10.2.1 WAN interface 69 10.2.2 [...]

  • Page 10

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 1: Intr oduction 9 EN 1I n t r o d u c t i o n The models LANCOM 821+, LANCOM 17 21 VPN and LANCOM 1711+ VPN are fully- featured routers that therefor e also can be used in combination with the integrated fir ewall for providing secur e Internet access to a complete local network (LA[...]

  • Page 11

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 1: Introduction 10 EN This is facil itated by sp litters whic h separate the voice f requencies from the data frequencies. 1.2 What does VPN offer? For LA NC OM 1711+ VPN and LANCOM 1721 VPN only A VPN ( V irtual P rivate N etw or k) c an be use d to se t up secure data commu ni- ca[...]

  • Page 12

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 1: Intr oduction 11 EN  The RAS PCs connect to the headquarters LAN via the Internet. The Internet is available virtually eve rywhere and typicall y has low access c o s t s . S i g ni f i c a n t s a vi n g s c a n t h u s b e a c h i e v ed i n re la t i o n t o s w it ch e d o [...]

  • Page 13

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 1: Introduction 12 EN Bridge function fo r coupling networks via ISDN connection ✔✔✔ Port - Mapping to set up LAN ports as additional W AN ports ✔✔ Poli cy- based routing for policy- based selection of target r outes ✔✔✔ Load- bal ancing fo r bundling of mult iple DS[...]

  • Page 14

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 1: Intr oduction 13 EN IP masquerading (NA T , P A T) to co nceal individual LAN workstati ons behind a single public IP addr ess. ✔✔✔ Stateful Inspe ction Firewal l ✔✔✔ Firewall fil ter for blocking indivi dual IP addresses, protocols and p orts ✔✔✔ MAC address fi [...]

  • Page 15

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installation 14 EN 2 Installation This chapter will assist you to quick ly install har dware and softwar e. First, check the package contents and system requir ements. The device can be installed and co nfigured quickly and easi ly if all prerequisites are fulfilled. 2.1 Package [...]

  • Page 16

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installatio n 15 EN  Operating system that support s TCP/IP , e. g. Windows Vista™, Windows XP , Windows Millennium Edition (Me), Windows 2000, Win- dows 98, Linux, BSD Unix, Apple Mac OS, OS/2.  Access to the LAN via the TCP/IP pr otocol.  The LANtools also re quire a [...]

  • Page 17

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installation 16 EN LANCOM 1711+ VPN To p T h e t w o t o p - m o u n t e d L E D s e n a b l e t h e m a i n f u n c t i o n s t a t u s t o b e a s s e s s e d even if the device is positioned verticall y .  Pow er This LED indicates that the device is operational. After t he[...]

  • Page 18

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installatio n 17 EN tion about a later assignment of the configuration passwor d see the section “Security sett ings”.  Online The online LED displays the ge neral status of all WAN interfaces:  ADSL status ( LANCOM 821+ and LANCOM 1721 VPN only) Information on connectio[...]

  • Page 19

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installation 18 EN  ADSL data ( LANCOM 821+ and LANCOM 1721 VPN only) Information on data tr affic at the A DSL connector:  WAN Sta tu s (only LANCOM 1711+ VPN) Connection status of the W AN connection:  WAN Da ta (only LANCOM 1711+ VPN) Data traffic via the W AN connect[...]

  • Page 20

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installatio n 19 EN  If the ISDN status LED goes off automatically , this does not indicate an error at the S 0 b u s. It is in fa ct be ca us e se ve r al I SD N c on ne ct io ns and PBXs switch the S 0 bus into power- saving mode after a certain period of inactivity . When ne[...]

  • Page 21

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installation 20 EN LANCOM 821+ and LANCOM 1721 VPN  V oltage swit ch  Connection for the included power adapter  Switch with four 10/100Base- Tx connections  USB connection  Serial configuration po rt  ISDN/S 0 port  ADSL port  Reset swit ch LANCOM 1711+ V[...]

  • Page 22

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installatio n 21 EN  Reset swit ch The reset switch has two different func tions depending on the length of time that it is pressed:  Restarting the de vice (soft reset) – push the button for less than five seconds. The device will restart.  Resettin g the configuration[...]

  • Page 23

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installation 22 EN  Boot only: With a suitable setting, th e behavior of the reset button can be controlled; the button is then ignored or a press of the button prompts a re- start only , however long it is held down.  Reset- or - boot (standard setting): Pr ess the button [...]

  • Page 24

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installatio n 23 EN  ISDN – to connect the L ANCOM Ro uter to the ISD N, plug one end of the supplied ISD N connector ca ble (light blue plugs) in the ISDN/S 0 port  (LANCOM 821+ and LANCO M 1721 VPN) or  (L ANCOM 1711+ VPN) of the router and the other end into an ISDN/[...]

  • Page 25

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 2: Installation 24 EN 2.5.1 Starting the softwar e setup Place the product CD into your drive. The setup progr am will start automati- cally .  If the setup does not start automatically , run AUTORUN. EXE in the root dir e ctory of the LANCOM CD. In Setup, select Install software[...]

  • Page 26

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configurat ion 25 EN 3 Basic configuration The basic configuration is conducted with a convenient Setup Wizard that provides step- by- ste p guidance throug h the configuration and that requests any necessary information. First of all this chapter pr esents the information t[...]

  • Page 27

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configuration 26 EN New LAN – fully automati c configur ation possible T he se t u p w iz a r d o f fe rs t o co nf i g ur e T C P/ IP f ul ly a u t om at i ca ll y i f no ne t w or k devices connected have yet been config ured. This us ually happens in the fol - lowing s[...]

  • Page 28

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configurat ion 27 EN  Server: The LANCOM VPN Router operates as DHCP server i n the net- work; as a minimum its own IP ad dress and the n etwork mask must be assigned.  Client: The LANCOM VPN Router obtains its addre ss information from another DHCP server; no add ress[...]

  • Page 29

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configuration 28 EN 3.1.4 Settings for the ISDN Connection If you wish to use the ISDN connection you can make the following settings:  One or more ISDN MSNs on which the r outer should answer calls. MSNs are ISDN call numbers that your tele phone company allocates to yo[...]

  • Page 30

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configurat ion 29 EN  If you cannot access an unconfigured LANCOM, the problem may be due to the netmask of the LAN: wi th less than 254 p ossible hosts (net- mask > '255.2 55.255.0 '), please ensure that the IP address 'x.x.x.254' is located in you[...]

  • Page 31

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configuration 30 EN  Section 'TCP/IP setti ngs to workstat ion PCs' will describe the setti ngs required for the individual workstat ions in the LAN. 3.3 Instructions for WEBconfig Device settings can be configured fr om any Web browser . WEBconfig config- urat[...]

  • Page 32

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configurat ion 31 EN If the configuration computer does no t r etrieve its IP address fr om the LANCOM DHCP server , it determines th e current IP addr ess of the computer (with Start  Run  cmd and command ipconfig at the prompt under Win- dows 2000 or Windows XP , wit[...]

  • Page 33

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configuration 32 EN  The MAC address on a st icker on the base of the device.  If there is no DNS server in the LAN, or if it is not coupled to the DHCP server , the devic e cannot be reached vi a the name. In this case the follow- ing options remain:  Use LANconfi[...]

  • Page 34

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configurat ion 33 EN Setup Wizards The setup Wizards allow quick and easy configuration of the most common device settings. Sele ct the Wizard and enter the appr opriate data on the fol- lowing scree ns.  The settings ar e not stored in the device until input s are confir[...]

  • Page 35

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 3: Basic configuration 34 EN  IP address assignment vi a a separate DHCP server The workstation PCs must be configured so that they automatically obt ain their own IP address and the IP addresses of the standard gateway and DNS server (vi a DHCP). The I P address of the LANCOM m [...]

  • Page 36

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 4: Setting up Internet access 35 EN 4 Setting up Internet access The LANCOM provides a central po int of Interne t access for all of the comput- ers in the LAN. Which WAN interface? Setting up the Internet access is carried out with the help of a convenient Wiz- ard. In the first s t[...]

  • Page 37

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 4: Setting up Internet access 36 EN  Billing by time or f latrate – select the method by whic h you are billed by your Internet pr ovider .  In case of bill ing by time , you ca n set the LANCOM to cut connections automatically if no data flows for a certain time (the hold t[...]

  • Page 38

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 4: Setting up Internet access 37 EN 4.1 The Internet Connection Wizard 4.1.1 Instructions for LANconfig  Mark your devic e in the se lection window . From the command line, select Extras  Setup Wizard .  In the selection menu, se lect the Se tup Wizard, Set up Internet conn [...]

  • Page 39

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 4: Setting up Internet access 38 EN  The Wizard will inform you as soon as the entries ar e complete. Close the configuration with Finish . 4.1.2 Instructions for WEBconfig  Select the entry Set up Internet conne ction from the main menu.  In the following windows you selec[...]

  • Page 40

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 4: Setting up Internet access 39 EN 4.2.1 LANconfig Wizard  Mark your LANCOM i n the sele ctio n window . From the command line, select Extras  Setup Wizard .  In the selection menu, sele ct the Setup Wizard, Configure firewall and confirm the select ion with Continue .  [...]

  • Page 41

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 40 EN 5 Linking two networks With the network interconnection (also known as LAN to LAN coupling) of the LANCOM Router, two local networks are linked. The LAN to LAN coupling can be realized in principle in two different ways:  VPN : For coupling via VPN, [...]

  • Page 42

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 41 EN  The ISDN call back function cannot be configured using the wizard. It can only be set up in the ex pert co nfigur ation. For details, please see the ref ere nc e m an ual . 5.1 What information is necessary? The wizard will prompt you for the necessa[...]

  • Page 43

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 42 EN  I n c a s e y o u r d e v i c e h a s a n ISDN connection , the w izard asks whether the remote site has ISDN as well.  The type of IP address must be stated for both sides for VPN connections via the Internet. The re ar e two types of IP address[...]

  • Page 44

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 43 EN  The password for the ISDN connection is an alternative to the use of the ISDN caller ID. It is always used to authenticate callers that do not s e n d a n I S D N c a l l e r I D . T h e e x a c t s a m e p a s s w o r d m u s t b e e n t e r e d o n[...]

  • Page 45

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 44 EN DNS access to the remote LAN Thanks to DNS, it is not only possi ble to acces s remote computer s in a TCP/IP network via their IP address, but al so by using fr eely defined names. For example , the computer wi th th e name 'pc1.branch.company&apo[...]

  • Page 46

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 45 EN The IPX network numbers in the head an d br anch offices ar e specified t o the resp ec ti ve re mo te si des . The three required network numbers are designated as “External Network Numbers” by the IPX c onventions. Like IP network addresses, the ap[...]

  • Page 47

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 46 EN 5.2 Instructions for LANconfig Per form the configuration on both r outers, one at a time.  Launch the 'Connect two local area networks' wizard. Follow the wizar d 's instructions and enter the r equired information.  T h e w i z a [...]

  • Page 48

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 47 EN 5.3 1- Click- VPN for networks (site- to- site) The site- to- site coupling of networks is now very simple wi th the help of the 1- Click- VPN wizard. It is even possible to simultane ously couple multiple rout er s t o a ce nt ral ne tw ork .  In LAN[...]

  • Page 49

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 5: Linking two networks 48 EN  Select whether connection establishment is to take pl ace via the name or IP address of the central r outer , or via an ISDN connection. Enter the address or name of the central router , or its ISDN number .  The final step is to define how th e [...]

  • Page 50

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 6: Providing dial- in access 49 EN 6 Providing dial- in access Y our LANCOM Router supports dial- in connections to permit individual com- puters full ac cess to your networ k. This service is also know n as RAS (Remote Access Service). In principle, the RAS access can be realized in[...]

  • Page 51

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 6: Providing dial- in access 50 EN 6.1.1 General information The following entries are required to set up a RAS connection. The first column indicates whether the informat ion is required for a VPN (standar d method using “pr e shared keys“) an d/or an ISDN connection.  Furth[...]

  • Page 52

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 6: Providing dial- in access 51 EN  Please refer to chapter “Linking two networks” on page 39 for advice about the other values requir ed for the installation of a RAS access. 6.1.2 Settings for TCP/IP Ea ch a ct iv e RA S us er m us t b e as sig ned an IP address when using t[...]

  • Page 53

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 6: Providing dial- in access 52 EN same applies in the ot her direction as well : computers in the LAN will also be able to access the remote machine. 6.1.3 Settings for IPX T wo IPX network numb ers must be provided for remote access to a n IPX net- work:  the IPX network number[...]

  • Page 54

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 6: Providing dial- in access 53 EN Networking first. When conn ected, they can search for and access computers in the remote network (via Find  Computer s, not through the Network Neighbourhood). 6.2 Settings for the dial- in computer 6.2.1 Dial- up via VPN For dialing into a netw[...]

  • Page 55

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 6: Providing dial- in access 54 EN  T h e w i z a r d w i l l r e t u r n a m e s s a g e t o i n d i c a t e t h a t i t h a s a l l t h e i n f o r m a t i o n it needs. Close the wizard with Finish .  Configure Dial- Up Networking access on the dial- in PC as descri bed. Ne[...]

  • Page 56

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 6: Providing dial- in access 55 EN  Print out profile  Sending a profile via e- mail could be a security risk should t he e- mail be intercepted en rout e! T o se nd the profile via e- mail, the device configuration must be set up with an SMTP account with t he necessary access[...]

  • Page 57

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 7: Sending faxes with L ANCAPI 56 EN 7 Sending faxes with LANC API LANCAPI fr om LANCOM S ystems is a special version of the popular C API inter- face. CAPI (Common ISDN Application Pr ogramming Interface) establ ishes the connection between ISDN adapters an d communications progr a[...]

  • Page 58

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 7: Sending faxes with LANCAPI 57 EN 7.1 Installation of the LANCOM CAPI F axmodem  Select the entry Install LANCOM software in the setup program of your LANCOM CD .  Highlight the option CAPI Faxmodem , click Next and follow the instru c- tions of the installation routine . Whe[...]

  • Page 59

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 7: Sending faxes with L ANCAPI 58 EN 7.2 Installation of the MS Windows fax service  Select the option Printers and Faxes from the contr ol panel.  Select the option Se t up faxing from the window ’Printers and F ax’. Fol- low , if necessary , the instructions of the insta[...]

  • Page 60

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 7: Sending faxes with LANCAPI 59 EN  Adjust the fax de vice as printer .  Click on OK. A w izard appears, th at will guide you through the r emaining sending process. 7.3.2 Send a fax with the MS Windows fax service  Open the window ’Printers and Faxes’ from the control [...]

  • Page 61

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 8: Security settings 60 EN 8 Security settings Y our LANCOM device has nume rous security functions. Y ou find in this chapter all information needed for an optima l protection of the b ase statio n.  Y ou can carry out the conf iguration of security settings very quickl y and co[...]

  • Page 62

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 8 : Security settings 61 EN  Select in the sele ction menu the setu p wizard Control Security Settings and confirm y our choice with Next .  Enter your password i n the followin g windows and select the allowed pro- tocols for the configuration access from local and remote netw[...]

  • Page 63

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 8: Security settings 62 EN  Have you permitted re mote configuration? If you do not requ ire r emote configurat ion, please ensur e to switch it off . If yo u ne ed to make use o f re mote conf igur ati on, e ns ure th at yo u d o n ot fail to password- prote ct the configuration[...]

  • Page 64

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 8 : Security settings 63 EN be found in the LANconfig in the configuration area 'IP r outer' on the 'Routing' tab.  Have you used filters to close critical ports? The firewall filters in LANCOM device s offer filter functions for individual computers or entire [...]

  • Page 65

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 8: Security settings 64 EN With the ISDN locati on verification, the device can onl y be operated at one particular ISDN conne ction. After bei ng switched on, the device calls itself at the corresponding telephone num ber to check that it is still con- nected to the “correct” I[...]

  • Page 66

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 9 : T roubl eshooting 65 EN 9T r o u b l e s h o o t i n g In this chapter , you will find suggesti ons and assistance for a few common dif- ficulties. 9.1 No W AN connection is established After start- up the router automatically attempts to connect to the DSL pro- vider . During th[...]

  • Page 67

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 9: T roubleshooting 66 EN Increasing the TCP/IP window size under Windows If the actual transfer r ate of a DSL co nnection is significantly be low the fastest rate listed by the provider , there are only a few possible causes (apart from the above- mentioned external factors) wh ic[...]

  • Page 68

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 9 : T roubl eshooting 67 EN tested (e.g. “DSL1” or “LAN-1”). Pay attention to the corr ect spelling of the interfaces. Start the tes t for the specified interfac e by clicking on Execute . Change then to me nu item Expert configuration  St atus  LAN statis- tics  Cab[...]

  • Page 69

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 10: Appendix 68 EN 10 Appendix 10.1 Performance data and specifications LANCOM 821+ LANCOM 1721 VPN LANCOM 1711+ VPN Connections Ether net LAN 4x 10/100Base-TX, auto sensing, switch with node/h ub auto sensing WAN/ADSL ADSL over ISDN as per ITU G.992.1 Annex B (compatible to U- R2 c[...]

  • Page 70

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 10: Appendix 69 EN 10.2 Contact assignment 10.2.1 W AN interface Only LANCOM 1711+ VPN 8- pin RJ45 socket 10.2.2 ADSL interface Only LANCOM 821+ and LANCOM 1721 VPN 6- pin RJ11 socket Connector Pin IAE 1T + 2T - 3R + 4– 5– 6R - Connector Pin IAE 1– 2– 3a 4b 5– 6–[...]

  • Page 71

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Chapter 10: Appendix 70 EN 10.2.3 ISDN S 0 interface 8- pin RJ45 socket, corr esponding to ISO 8877, EN 60603- 7 10.2.4 Ethernet interface 10/100Base- TX 8- pin RJ45 socket, corr esponding to ISO 8877, EN 60603- 7 Connector Pin Line IAE 1–– 2–– 3T + 2 a 4R + 1 a 5R - 1 b 6T - 2 b 7?[...]

  • Page 72

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Chapter 10: Appendix 71 EN 10.2.5 Configuration interface (Outband) 8- pin mini- DIN socket 10.3 Declaration of conformity LANCOM S ystems herewi th declares that the devi ces of the type descr ibed in this documentation ar e in agreement wi th the basic r equiremen ts and other relevant re [...]

  • Page 73

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Index 72 EN Index Numerics 10/100Base- TX 20 3- D ES 40 , 49 A Accounting 28 ADSL Connect 20 Connector cable 14 Transfer rates 9 AES 40 , 49 Answering machine 9 Autosensing 22 B Basic configuration 25 Blowfish 40 , 49 C Callback function 13 , 40 , 49 Calling Line Id entity (CLI) 51 CAPI int[...]

  • Page 74

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Index 73 EN H Hardware installation 21 I ICMP 63 Information symbols 5 Installation 14 ADSL 22 configuration port 23 DSL 22 ISDN 23 LAN 22 LANtools 23 power adapter 23 Interconnection 40 Security aspects 40 Internet access 11 , 35 Authentication data 35 Flatrate 36 Internet access setup 35 I[...]

  • Page 75

    LANCOM 821+ – LANC O M 1711+ VPN – LANCOM 1721 VPN  Index 74 EN PBX 9 Ping 46 Power adapter 14 , 20 PPP 49 PPP client 53 Prefix for external l ine 28 Preshared Key Shared Secret 43 R RAS 11 Remote Ac cess Service (RA S) Configuring the dial- in computer 53 Enable software compression 53 IPX 52 NetBIOS 52 Searching for Windows workgroups 52 S[...]

  • Page 76

    LANCOM 821+ – L ANCOM 1711+ VPN – LANCOM 1721 VPN  Index 75 EN W WAN Connector cable 14 WEBconfig 30 System requirements 15[...]