AGA Toolkit '97

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AmiTCP/IP 4.3 "Read Me First" File ================================== This file contains notes on changes that didn't make to other documentation. Please read this through if you encounter any problems configuring AmiTCP/IP 4.3. Contents: 1. Summary of new features and improvements 2. Upgrading from earlier versions 3. Changes in the AmiTCP/IP setup 3.1 User information 3.2 IP provider setup (including fixed networks) 3.3 Serial line setup (if serial line is used) 3.4 Modem setup (if modem is used) 4. Notes on supported Sana2 device drivers 4.1 Driver specific notes 5. Configuring multiple interfaces 5.1 Secondary interfaces 5.2 Using `bootpconfig' to configure secondary interfaces 5.3 Proxy ARP 6. Miscellaneous 6.1 db/User-Stopnet 6.2 ifconfig changes 6.3 Configuring without Domain Name Service 1. Summary of The New Features and Improvements =============================================== This is the AmiTCP/IP Release 4.3 released 31-Mar-96. This release contains new features, minor bug fixes and performance improvements over previous versions. New features: * Improved and simplified configuration with IP provider profiles * Direct Dial-Up support with BootPConfig * New improved SLIP device (aslip.device) * New API interface with Intelligent Priority Boosting * Up to 100 % faster FTP transmissions in LANs * Improved Napsaterm Telnet/Rlogin tool, added WB-icons * Improved command line utilities (arp, bootpconfig, ifconfig) * Improved Arexx interface * Default values shown in db/AmiTCP.config * socket.library for AS225 compatibility Fixed bugs: * Stack overflows in inetd and portmap fixed * Portmap now supports broadcast RPC better * Other obscure memory trashing bugs are fixed * AmiTCP/IP license key file and AmiTCP/IP itself can now be stored in any file system Known bugs: * Stopnet won't always work with some buggy device drivers (a2065.device) 2. Upgrading from Earlier Versions ================================== The `Install AmiTCP' on the installation disk 1 supports upgrading from earlier AmiTCP/IP versions. This release is fully compatible with the 4.2 release, meaning that the 4.2 configuration can be used with this release as is. To make use of the new features generally requires your to reconfigure AmiTCP/IP, though. Running `Config AmiTCP' will write over the existing `bin/startnet' script, which you usually want to save for backup purposes. Although `Install AmiTCP' can copy existing AmiTCP/IP configuration files, there might be other files (configuration files, program files) that you have installed on top of the earlier AmiTCP/IP. These files are NOT copied over automatically, and you must either copy the files manually, or reinstall the software in question. Note that the `db/inetd.conf' will be copied from an earlier installation, and it can refer to server programs not existing in the standard AmiTCP/IP distribution. These programs should be copied from old `serv' directory to the new `serv' directory. 3. Changes in The AmiTCP/IP Setup ================================= The way the configuration information is stored has been changed. The main motivation has been to allow `Config AmiTCP' to recognize existing setup, and provide proper default values to allow configuration changes without requiring to re-enter *any* value, that does not need to be changed. Also, the configuration information is divided into several independent categories: 1) User information 2) IP provider setup (including fixed networks) 3) Serial line setup (if serial line is used) 4) Modem setup (if modem is used) These are handled in following subsections. 3.1 User Information -------------------- The default user name is stored in ENVARC:LOGNAME and ENV:LOGNAME. LOGNAME variable is also set up by the login command, which means that when startnet is run, the user will not be changed. However, the configured default user is restored when the ENV: is initialized from ENVARC: during a reboot. The `login' command has been changed so that with usage "Login -f" it reads the user name to login from ENV:LOGNAME. The password setting during configuration has been made optional. Other user information (real name, home directory etc.) is asked as before. 3.2 IP Provider Setup (Including Fixed Networks) ------------------------------------------------ This release introduces "Provider profiles". These files collect all IP provider specific information into one place. In other words, switching providers just means replacing the existing profile with a new one! This release contains few ready made profiles, but you should ask your provider whether they already have a profile for the AmiTCP/IP. If they do, fine, that's all you need. But if they do not, then you need to create one. The information needed to make the profile is not dependent on the computer platform, and exact instructions for some other platform will be of great help in making the profile for the AmiTCP/IP. If you provide the information from your provider, we can help you to complete the script (via email to AmiTCP-Support@nsdi.fi). We also intend to make the scripts available via our WWW service <http://www.nsdi.fi/>. Profiles are stored in directory `AmiTCP:Providers'. The currently used profile is stored in `AmiTCP:db/Provider.conf'. The profiles in `AmiTCP:Providers' include: FIN_TeleInetOpen - Telecom Finland InetOpen (SLIP, BOOTP) FIN_PersonalEunet - Eunet Finland (PPP) Fixed_Network_Connection - Template for LANs (Ethernet etc.) NullModem - Direct serial, No modem, no login NullModemLogin - Direct serial with login procedure Other - Template for DialUp IP providers If the profile does not set the name server information, then they are stored into `db/resolv.conf' by the `Config AmiTCP'. This file will be overwritten by some provider profiles (see NSDynamic below). The provider profile contains two parts. The first part starts from the first line with "/*", and ends with the line starting with "*/". This part contains configuration information, which `Config AmiTCP' interprets and modifies. Bootpconfig also uses this information when configuring AmiTCP/IP. Fields in this section are: Name Name for this profile DialUp 1 if modem is needed. This is how `Config AmiTCP' knows to ask modem configuration. Interface Network interface name to be configured InterfaceConfig Provider specific Sana2 options. Appended to serial configuration from db/autointerfaces to form a Sana2 device configuration file. Only provider specific options should be set here. NeedSerial 1 if a serial line is needed. This is how 'Config AmiTCP' knows to ask serial line related options. IPDynamic 1 if IP address is dynamic, 0 otherwise IPAddr IP-address if static, leave blank if not known. 'Config AmiTCP' will ask this if necessary. Bootpconfig can ask this at startup time also. DestIP Destination IP address. This is NOT needed for dialup configurations. Gateway Default Gateway address. This is NOT needed for dialup configurations. Netmask Netmask of the interface. This is NOT needed for dialup configurations. NSDynamic 1 if name server configuration is dynamic. In this case the dial script should set the name server addresses ("Set NS1 x.x.x.x"). 0 otherwise. Bootpconfig will create db/resolv.conf and db/netdb-myhost (for compatibility with old email programs) at startup time if name server configuration is dynamic. UseBootP 1 if BOOTP protocol should be used to configure dynamic IP address, 0 otherwise. Your IP provider must support BOOTP for you to be able to use it. MTU Maximum transmit unit (in bytes) to use. The maximum receive unit size is set in Sana2 configuration and is set to maximum by `Config AmiTCP'. 0 represents the default maximum value, which should be used on all LAN configurations. Phone Provider phone number (without spaces). Dial script command "Dial" (in AmiTCP:ssrx/Dial.ssrx) will get this through bootpconfig. It is in this section for 'Config AmiTCP' to be able to configure it. The rest of the file is used as a dial-up script. As you see, the script language is ARexx. Scripts can contain AmiTCP/IP scripting commands in addition to normal ARexx commands. The command set is documented in help/AmiTCP.guide. If you use the "Other" profile, then a default manual login script is appended to your profile. You can use this script to test the login procedure, and then automate it when you need what kind of conversation is needed with the IP provider service. An example provider profile: ---8<---8<---8<---8<--->8--->8--->8--->8--- /* Provider Configuration Follows: Name Other ; Name for this configuration DialUp 1 ; This configuration needs a modem Interface slip ; Interface name InterfaceConfig "" ; Provider specific Sana2 options NeedSerial 1 ; This configuration needs a serial line IPDynamic 0 ; 1 = YES, 0 = NO IPAddr ; IP-address if static NSDynamic 0 ; 1 = YES, 0 = NO UseBootP 0 ; 1 = YES, 0 = NO MTU 576 ; Provider specific Phone ; Provider phone number (without spaces) */ /* The rest is the Dialer script for this provider */ options results signal on error Say "Entering Manual Console Mode." Status "Please log in" ManualConsole exit 0; /* Successful exit */ error: Say "Command on line" SIGL "returned" RC ":" SerScript.LASTERROR Exit 10 ---8<---8<---8<---8<--->8--->8--->8--->8--- 3.3 Serial Line Setup (If Serial Line Is Used) ---------------------------------------------- Serial line setup is asked if the selected network interface requires it (SLIP, PPP). The serial line configuration is stored in db/autointerfaces, that uses the same format as the db/interfaces. You should not manually modify the db/autointerfaces file, but use the 'Config AmiTCP' to manage it. The `Shared mode' is offered as the default. If Shared mode is used, the dialup can be done without setting the modem to the ignore DTR mode (AT&D0). This allows the modem connection to be dropped automatically when AmiTCP/IP is terminated. The EOF-mode setting is automated by both aslip.device and the newest version of the ppp.device. These devices use the EOF-mode on only on devices known to support it. You can enforce EOF-mode on or off by giving an additional serial option, EOFMode or NoEOFMode, respectively, when `Config AmiTCP' asks for additional serial options. EOF mode is a technical detail in serial device usage that affects the CPU usage of the serial traffic. EOF mode should be used if possible, but unfortunately some add-on serial boards and replacement serial drivers do not implement it. If you are using the normal AmigaOS serial.device with the internal serial port, then you do NOT need to bother about the EOF-mode at all. The MTU value stored in db/autointerfaces is used as `MRU', i.e. `Maximum Receive Unit', the maximum size allowed for an incoming packet. This is always kept at maximum by the `Config AmiTCP', and should NOT be modified. This version of AmiTCP/IP allows MTU (Maximum Transmit Unit, the maximum size of sent packets) to be set independently. This value is asked in `IP provider options' and is stored in the IP provider profile. This value can also be changed and viewed at the run time with `ifconfig' utility. The DoOffline option included into SLIP and PPP configuration in the file `db/autointerfaces' instructs AmiTCP/IP to put the Sana2 device offline when AmiTCP/IP is stopped. Putting SLIP or PPP device offline will cause the modem connection to be dropped. 3.4 Modem Setup (If Modem Is Used) ---------------------------------- 'Config AmiTCP' now also asks for the modem configuration. This includes modem initialization string, and the dialing prefix. These are stored in ENV:ModemInitString and ENV:ModemDialPrefix, respectively (also in ENVARC). The modem initialization string is dependent of the modem you have. If you are using a terminal program, you probably have a modem initialization sting configured for it. This can be used as is with AmiTCP/IP as well. Generally the modem initialization string should contain the following: 1) The command introducer "AT" (for Hayes compatible modems) 2) Reset to factory defaults: "&F" 3) Sense carrier: "&C1" 4) Disconnect on DTR drop: "&D2" 5) Hardware handshake: "&R1" (7Wire mode, need 7 wire cable) You need to confirm the actual values from the manual of your modem. The scripts using the ModemInitString assume it to return OK, so at least the command introducer must be given. The modem dial prefix is usually "ATDT" (touch tone dial). 4. Notes on Supported Sana2 Device Drivers ========================================== AmiTCP/IP itself supports all standard Sana2 (Amiga standard for network driver interface) device drivers. However, the configuration utilities only support a limited set of drivers that we had proper information about. Other drivers require proper entries into the db/interfaces file, and the configuration made with `Config AmiTCP' must be altered manually. Note also that `Config AmiTCP' currently supports configuring only one interface at a time. Information on configuring multiple interfaces can be found from the AmiTCP/IP User's Manual and from this file. 4.1 Driver Specific Notes ------------------------- SLIP: aslip.device is a new slip Sana2 device with slightly modified configuration file interface. `Config AmiTCP' requires it if SLIP protocol is used. PPP: ppp.device version 1.45 or later is needed for PPP. Evaluation version is available from AmiNet (for example wuarchive.wustl.edu), file /pub/aminet/comm/net/PPP1_45.lha. Ethernet Ethernet and other LAN interfaces are configured with profile "Fixed_Network_Connection" (in `Config AmiTCP'). If you are using Village Tronic Ariadne, at least the version 1.37 should be used (version can be checked with command "version ariadne.device"). 5. Configuring Multiple Interfaces ================================== The `Config AmiTCP' supports configuring the first interface only. AmiTCP/IP regards this interface as the primary interface. This means that the host name reported by the AmiTCP/IP is bound to the IP address of that interface. The only way to change the primary interface is to put the primary interface `down' with ifconfig. 5.1 Secondary Interfaces ------------------------ Additional interfaces can be configured in the file `db/User-Startnet', which is executed by `startnet' when AmiTCP/IP has been successfully configured. The commands to be used for secondary interface configuration are: 1) ifconfig - configure a network interface 2) route - add routes 3) arp - add proxy arp entries (see below) 4) bootpconfig - powerful utility to configure the interface, add routes, configure name service configuration, run dialup scripts, etc. NOTE: BOOTP protocol for interface configuration is supported for the first interface only. The `ifconfig' is the simplest tool to use if the secondary interface is Ethernet, Arcnet, or other broadcast interface. It is best to configure SLIP and PPP connections with the `bootpconfig' utility. 5.2 Using `bootpconfig' to Configure Secondary Interfaces --------------------------------------------------------- If your primary interface is an Ethernet interface, and the secondary interface is a directly connected serial line providing connectivity to a machine without an Ethernet board, then you would do following: 1) Configure the Ethernet interface with `Config AmiTCP' using the provider profile "Fixed_Network_Connection". 2) Configure the slip line in db/User-Startnet: bootpconfig aslip0 IP $HOSTNAME Dest <remote-ip-address> arp -s <remote-ip-address> pub where the <remote-ip-address> is assigned from the same IP subnet as the primary Ethernet interface. Note that the entry "aslip0" must be manually added to the db/interfaces file. A proper procedure to do this is described later in this document. The "arp..." line adds a proxy arp entry. Proxy ARP is described in a section of it's own. This setup will allow IP connectivity to the Ethernet for both of the machines. More usual case is when you have a local Ethernet and then you occasionally dial up a SLIP or PPP connection to your provider. In these cases the Ethernet interface remains your primary interface ('hostname' command will report the name mapped to the IP address of the Ethernet interface). You need to set the default route to temporarily point to your IP provider. Also the name service configuration might need to be changed. To configure this kind of configuration, do the following: 1) Use the `Config AmiTCP' utility to configure the dialup line. You will most probably need to use the "Other" provider profile as a starting point. Specify Dynamic name service. This will allow the name service configuration to be changed when you dial up. After the configuration you will have a dial script, that requires manual login. You need to edit the stored AmiTCP:db/Provider.conf script part to automate the login procedure. AmiTCP:help/AmiTCP.guide contains a full reference of the AmiTCP/IP scripting commands (in addition to normal ARexx commands). Make sure that the script sets the name server IP addresses. When you have successfully configured the dialup line, store the AmiTCP:db/Provider.conf to AmiTCP:db/providers. For this example we assume that you named the profile as "MyProvider". The serial configuration is stored in the file `db/autointerfaces', and it can be left there. If you have multiple serial lines, you might use `Config AmiTCP' to configure them one at a time, and then save the db/autointerfaces contents to the `db/interfaces' file (with different interface names). The modem configuration is stored in `ENV:'. Currently only one modem configuration can be stored. This means that if you use multiple modems, same initialization string and dial prefix would be used for all of them. 2) Configure the Ethernet interface with the `Config AmiTCP'. 3) Test your Ethernet configuration. When it works create a script named DIALUP with your favorite editor: .key PROVIDER .bra { .ket } .def PROVIDER MyProvider bootpconfig PROVIDERFILE=AmiTCP:Providers/{PROVIDER} FORCEPRIMARY Normally bootpconfig would not configure the default routes and the name server configuration for secondary interfaces, but the switch FORCEPRIMARY will override that. If PROVIDERFILE option is not given, then bootpconfig assumes AmiTCP:db/Provider.conf, IF no interface name is given in command line. The restriction is for backwards compatibility with earlier bootpconfig versions. 4) Also create a HANGUP script: .key PROVIDER .bra { .ket } .def PROVIDER MyProvider AmiTCP:util/parseconfig PROVIDERFILE=AmiTCP:Providers/{PROVIDER} offline `type ENV:Config_AmiTCP/provider/Interface` ; put i/f offline echo "" >AmiTCP:db/resolv.conf ; clear out name servers route delete default ; delete default route The `parseconfig' is not intended to be documented at all, but since it is handy here, I've used it anyway. All it does in above is to get the interface name out of the provider profile to an environment variable, from where it is easier to use within a script. These scripts can be improved in many ways. For example, you might save the current name server configuration before configuring new one, and restore it after the hang up. 5.3 Proxy ARP ------------- Proxy ARP is an arrangement where your host (your Amiga) acts as a proxy for another computer. It means that your Amiga answers to the ARP requests on behalf of the another computer, which is usually connected to your Amiga via a serial line, for instance. When a host on the Ethernet wants to send a packet to that another computer, it will actually send the packet to your Amiga. In other words, your Amiga acts as a gateway between the rest of the hosts on the Ethernet and the host that is connected via a serial line. A new usage of the "arp" command has been added to make adding proxy ARP entries easy. This usage is: arp -s <hostname> pub Such an `arp' command searches for a local broadcast-capable interface (Ethernet, Arcnet) that belongs to the same IP subnet with the <hostname>. If a suitable interface is found, `arp' command permanently stores and publishes an ARP entry with the hardware address of your Amiga and the IP address of <hostname>. Other hosts on that network will now send packets destined to <hostname> to your Amiga. For your machine to route any packets the "GATEWAY=YES" setting must be specified in db/AmiTCP.config. Also, the interface to the <hostname> must be configured, up and running. 6. Miscellaneous ================ 6.1 `db/User-Stopnet' --------------------- The `stopnet' script has been modified to execute `db/User-Stopnet', if it exists and AmiTCP/IP is running. There you can shut up the servers etc. you possibly have set up in `db/User-Startnet'. 6.2 `ifconfig' Changes ---------------------- Ifconfig now supports new usage, `ifconfig' without any arguments. It shows all currently configured interfaces. Ifconfig also gives textual presentations to all interface flags that are set. It also reports the set MTU, hardware type and hardware address, if applicable. The MTU can also be set, for example: ifconfig slip mtu 296 will set the MTU of the interface `slip' to 296 (`slip' is assumed to be configured already). 6.3 Configuring AmiTCP/IP without Domain Name Service ----------------------------------------------------- If you run AmiTCP/IP without a connection to the Internet, the Domain Name Service might not be available. AmiTCP/IP configuration expects that it can find out the host name from the IP address of your Amiga. If the domain name service is not available, you should add a suitable IP-address-to- host-name mapping to the `AmiTCP:db/hosts' file. See the existing `hosts' file for the format of the file. EOF