Sorry for the long mail.
> /sbin/modprobe ip_masq_ftp
> /sbin/ipfwadm -F -p deny
> /sbin/ipfwadm -F -a accept -m -S rigel/32 -D 0.0.0.0/0 -W plip1
You are close.. change -W to "slip0". The -W command is for the
Internet-connected interface.
Thanks to all who have replied!
Indeed, the following statement works fine for me:
ipfwadm -F -a m -S rigel/32 -D 0.0.0.0/0
Alas, I reported too early success! If I remember correctly, it *has*
worked, but now I'm not able to repeat success. Instead, I get a very
strange problem:
Doing telnet, I can login, send the password, and then: nothing
appears on screen! The same with ftp: I can connect, send the
password, etc. but after saying `get something', nothing happens; not
a single byte is transmitted. I have tried it in both directions
(since I have two modems), but it always fails.
Just for the record: both kernels (one is 2.0.34, the other one is
2.0.35) have masquerade support enabled; below I resend my scripts and
compile configuration file.
I'm completely lost. Please help.
Werner
======================================================================
Here's my setup:
My desktop computer (running Linux 2.0.34 + cmgr), called orion, is
connected to the outside worlds via slip, getting an IP dynamically.
This works without problems.
It is connected via plip to a laptop, called rigel running Linux
2.0.35 (this also works fine in both directions).
Below you'll find my .config file used for compilation on orion;
/proc/sys/net/ipv4/ip_forward is set to 1 (the same configuration has
been done for the 2.0.35 kernel, regarding the networking options).
Usually I do the plip setup first; here is the small script which I
run to establish the plip connection to rigel (`rigel' and `orion' are
registered in /etc/hosts):
----
# this script installs and sets up a plip connection; we are on orion
/sbin/modprobe plip
/sbin/ifconfig plip1 orion pointopoint rigel up
/sbin/route add rigel plip1
mount -t nfs rigel:/ /rigel
/sbin/modprobe ip_masq_ftp
/sbin/ipfwadm -F -p deny
/sbin/ipfwadm -F -a m -S rigel/32 -D 0.0.0.0/0 -W sl0
----
I call this script usually before connecting to the internet.
And here the similar script called on rigel, doing the same:
----
# this script installs and sets up a plip connection; we are on rigel
/sbin/modprobe plip
/sbin/ifconfig plip1 rigel pointopoint orion up
/sbin/route add orion plip1
/sbin/route add default gw orion
mount -t nfs orion:/ /orion
----
==== .config =========================================================
#
# Automatically generated by make menuconfig: don't edit
#
#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y
#
# Loadable module support
#
CONFIG_MODULES=y
CONFIG_MODVERSIONS=y
CONFIG_KERNELD=y
#
# General setup
#
# CONFIG_MATH_EMULATION is not set
CONFIG_NET=y
# CONFIG_MAX_16M is not set
CONFIG_PCI=y
CONFIG_PCI_OPTIMIZE=y
CONFIG_SYSVIPC=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_JAVA=m
CONFIG_KERNEL_ELF=y
# CONFIG_M386 is not set
# CONFIG_M486 is not set
CONFIG_M586=y
# CONFIG_M686 is not set
#
# Configuration/Resource Manager
#
CONFIG_CM_PNP_BIOS=y
CONFIG_CM_PNP_ISA=y
CONFIG_CM_PCI=y
CONFIG_CM_DEBUG=y
#
# Floppy, IDE, and other block devices
#
CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_IDE=y
# CONFIG_BLK_DEV_HD_IDE is not set
CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
# CONFIG_BLK_DEV_IDESCSI is not set
# CONFIG_BLK_DEV_IDE_PCMCIA is not set
CONFIG_BLK_DEV_CMD640=y
# CONFIG_BLK_DEV_CMD640_ENHANCED is not set
CONFIG_BLK_DEV_RZ1000=y
CONFIG_BLK_DEV_TRITON=y
# CONFIG_IDE_CHIPSETS is not set
# CONFIG_BLK_DEV_LOOP is not set
# CONFIG_BLK_DEV_MD is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_BLK_DEV_XD is not set
# CONFIG_BLK_DEV_HD is not set
#
# Networking options
#
CONFIG_FIREWALL=y
# CONFIG_NET_ALIAS is not set
CONFIG_INET=y
CONFIG_IP_FORWARD=y
# CONFIG_IP_MULTICAST is not set
CONFIG_SYN_COOKIES=y
CONFIG_IP_FIREWALL=y
CONFIG_IP_FIREWALL_VERBOSE=y
CONFIG_IP_MASQUERADE=y
CONFIG_IP_MASQUERADE_IPAUTOFW=y
CONFIG_IP_MASQUERADE_ICMP=y
CONFIG_IP_TRANSPARENT_PROXY=y
CONFIG_IP_ALWAYS_DEFRAG=y
CONFIG_IP_ACCT=y
# CONFIG_IP_ROUTER is not set
# CONFIG_NET_IPIP is not set
# CONFIG_INET_PCTCP is not set
# CONFIG_INET_RARP is not set
# CONFIG_NO_PATH_MTU_DISCOVERY is not set
CONFIG_IP_NOSR=y
CONFIG_SKB_LARGE=y
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_AX25 is not set
# CONFIG_BRIDGE is not set
# CONFIG_NETLINK is not set
#
# SCSI support
#
# CONFIG_SCSI is not set
#
# Network device support
#
CONFIG_NETDEVICES=y
CONFIG_DUMMY=m
# CONFIG_EQUALIZER is not set
# CONFIG_DLCI is not set
CONFIG_PLIP=m
CONFIG_PPP=m
CONFIG_SLIP=m
CONFIG_SLIP_COMPRESSED=y
CONFIG_SLIP_SMART=y
CONFIG_SLIP_MODE_SLIP6=y
# CONFIG_NET_RADIO is not set
# CONFIG_NET_ETHERNET is not set
# CONFIG_TR is not set
# CONFIG_FDDI is not set
# CONFIG_ARCNET is not set
#
# ISDN subsystem
#
# CONFIG_ISDN is not set
#
# CD-ROM drivers (not for SCSI or IDE/ATAPI drives)
#
# CONFIG_CD_NO_IDESCSI is not set
#
# Filesystems
#
# CONFIG_QUOTA is not set
CONFIG_MINIX_FS=m
# CONFIG_EXT_FS is not set
CONFIG_EXT2_FS=y
# CONFIG_XIA_FS is not set
CONFIG_NLS=m
CONFIG_ISO9660_FS=m
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_UMSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_NLS_CODEPAGE_437=m
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
CONFIG_NLS_CODEPAGE_850=m
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
CONFIG_NLS_ISO8859_1=m
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_KOI8_R is not set
CONFIG_PROC_FS=y
CONFIG_NFS_FS=m
# CONFIG_SMB_FS is not set
CONFIG_HPFS_FS=m
# CONFIG_SYSV_FS is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_UFS_FS is not set
#
# Character devices
#
CONFIG_SERIAL=m
# CONFIG_DIGI is not set
# CONFIG_CYCLADES is not set
# CONFIG_STALDRV is not set
# CONFIG_RISCOM8 is not set
CONFIG_PRINTER=m
# CONFIG_SPECIALIX is not set
# CONFIG_MOUSE is not set
# CONFIG_UMISC is not set
# CONFIG_QIC02_TAPE is not set
# CONFIG_FTAPE is not set
# CONFIG_APM is not set
# CONFIG_WATCHDOG is not set
# CONFIG_RTC is not set
#
# Sound
#
CONFIG_SOUND=m
# CONFIG_PAS is not set
# CONFIG_SB is not set
CONFIG_ADLIB=y
# CONFIG_GUS is not set
CONFIG_MPU401=y
# CONFIG_UART6850 is not set
# CONFIG_PSS is not set
# CONFIG_GUS16 is not set
# CONFIG_GUSMAX is not set
CONFIG_MSS=y
# CONFIG_SSCAPE is not set
# CONFIG_TRIX is not set
# CONFIG_MAD16 is not set
# CONFIG_CS4232 is not set
# CONFIG_MAUI is not set
CONFIG_AUDIO=y
CONFIG_MIDI=y
CONFIG_YM3812=y
MPU_BASE=330
MPU_IRQ=10
MSS_BASE=530
MSS_IRQ=10
MSS_DMA=0
DSP_BUFFSIZE=65536
# CONFIG_LOWLEVEL_SOUND is not set
#
# Kernel hacking
#
# CONFIG_PROFILE is not set
---------------------------------------------------------------------
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