I had to re-install F8 as upgrading from DVD failed on dependency check (freezing) My router was working fine in F7, and it was acting as a router with transparent proxy I had backuped all etc configuration files, so I copied back iptables, squid.conf, systcl and rebooted. Some notes: eth0 became eth1 during installation eth1 became eth0 I set back each card as in F7 (eth0 is the card connected to the Internet, eth1 to my internal network eth0 Link encap:Ethernet HWaddr 52:54:05:E5:82:46 inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::5054:5ff:fee5:8246/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:60644 errors:0 dropped:0 overruns:0 frame:0 TX packets:47213 errors:0 dropped:0 overruns:0 carrier:0 collisions:13 txqueuelen:1000 RX bytes:84757378 (80.8 MiB) TX bytes:4274281 (4.0 MiB) Interrupt:16 Base address:0xec00 eth1 Link encap:Ethernet HWaddr 00:11:D8:BF:9F:05 inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::211:d8ff:febf:9f05/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:363 errors:0 dropped:0 overruns:0 frame:0 TX packets:26 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:35917 (35.0 KiB) TX bytes:4155 (4.0 KiB) Interrupt:21 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:3579 errors:0 dropped:0 overruns:0 frame:0 TX packets:3579 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3796220 (3.6 MiB) TX bytes:3796220 (3.6 MiB) ppp0 Link encap:Point-to-Point Protocol inet addr:87.5.133.136 P-t-P:192.168.100.1 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1 RX packets:60469 errors:0 dropped:0 overruns:0 frame:0 TX packets:47007 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:83416497 (79.5 MiB) TX bytes:3225204 (3.0 MiB) I can ping eth1 but not eth0 (that I should get as it is acting as a router...) This is my iptables # Generated by iptables-save v1.2.6a on Fri Feb 21 09:27:33 2003 *nat :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] -A POSTROUTING -s 192.168.0.0/24 -o ppp0 -j MASQUERADE #-A POSTROUTING -s 192.168.0.0/24 -o eth1 -j MASQUERADE # Forward HTTP connections to Squid proxy -A PREROUTING -p tcp -m tcp -i eth0 --dport 80 -j REDIRECT --to-ports 3128 COMMIT # Completed on Fri Feb 21 09:27:33 2003 # Generated by iptables-save v1.2.6a on Fri Feb 21 09:27:33 2003 *mangle :PREROUTING ACCEPT [9:432] :INPUT ACCEPT [3:234] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [9:684] :POSTROUTING ACCEPT [17:1292] COMMIT # Completed on Fri Feb 21 09:27:33 2003 # Generated by iptables-save v1.2.6a on Fri Feb 21 09:27:33 2003 *filter :FORWARD DROP [0:0] :INPUT DROP [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -i lo -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -i eth0 -j ACCEPT -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -i eth0 -j ACCEPT COMMIT # Completed on Fri Feb 21 09:27:33 2003 this is my lsmod output: lsmod Module Size Used by xt_state 6081 2 iptable_filter 6465 1 iptable_mangle 6337 0 ipt_MASQUERADE 6721 1 ipt_REDIRECT 5825 1 xt_tcpudp 6977 1 iptable_nat 9669 1 nf_nat 18669 3 ipt_MASQUERADE,ipt_REDIRECT,iptable_nat nf_conntrack_ipv4 11717 4 iptable_nat nf_conntrack 51977 5 xt_state,ipt_MASQUERADE,iptable_nat,nf_nat,nf_conntrack_ipv4 nfnetlink 8281 3 nf_nat,nf_conntrack_ipv4,nf_conntrack ip_tables 14213 3 iptable_filter,iptable_mangle,iptable_nat x_tables 14277 6 xt_state,ipt_MASQUERADE,ipt_REDIRECT,xt_tcpudp,iptable_nat,ip_tables vfat 13249 1 fat 45277 1 vfat rfcomm 36825 0 l2cap 25537 9 rfcomm bluetooth 49316 4 rfcomm,l2cap autofs4 20421 2 sunrpc 140765 1 ppp_synctty 11073 0 ppp_async 12353 1 crc_ccitt 6081 1 ppp_async ppp_generic 24917 6 ppp_synctty,ppp_async slhc 9025 1 ppp_generic loop 16581 0 dm_multipath 18249 0 ipv6 245989 24 snd_intel8x0 30429 3 snd_ac97_codec 92389 1 snd_intel8x0 ac97_bus 6081 1 snd_ac97_codec snd_seq_dummy 6725 0 snd_seq_oss 29889 0 snd_seq_midi_event 9793 1 snd_seq_oss snd_seq 44849 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event snd_pcm_oss 37569 0 nvidia 6213840 24 snd_mpu401 11241 0 snd_mixer_oss 16705 1 snd_pcm_oss snd_mpu401_uart 10177 1 snd_mpu401 ne2k_pci 12449 0 snd_pcm 63685 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss 8390 12225 1 ne2k_pci snd_rawmidi 21185 1 snd_mpu401_uart skge 37457 0 button 10321 0 i2c_i801 12113 0 iTCO_wdt 13797 0 iTCO_vendor_support 7109 1 iTCO_wdt i2c_core 21825 2 nvidia,i2c_i801 snd_seq_device 10061 4 snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidi pl2303 20933 0 snd_timer 20549 2 snd_seq,snd_pcm usbserial 31017 1 pl2303 usb_storage 73345 1 snd 43461 18 snd_intel8x0,snd_ac97_codec,snd_seq_oss,snd_seq,snd_pcm_oss,snd_mpu401,snd_mixer_oss,snd_mpu401_uart,snd_pcm,snd_rawmidi,snd_seq_device,snd_timer snd_page_alloc 11337 2 snd_intel8x0,snd_pcm parport_pc 26981 0 parport 32393 1 parport_pc soundcore 9633 1 snd usblp 14913 0 ns558 8001 0 gameport 14665 2 ns558 sg 31965 0 sr_mod 17509 0 cdrom 33889 1 sr_mod floppy 53125 0 dm_snapshot 17765 0 dm_zero 5825 0 dm_mirror 21569 0 dm_mod 46209 9 dm_multipath,dm_snapshot,dm_zero,dm_mirror ata_generic 8901 0 ata_piix 16709 2 libata 99633 2 ata_generic,ata_piix sd_mod 27329 5 scsi_mod 119757 5 usb_storage,sg,sr_mod,libata,sd_mod ext3 110665 2 jbd 52457 1 ext3 mbcache 10177 1 ext3 uhci_hcd 23633 0 ohci_hcd 21445 0 ehci_hcd 31693 0 -- Antonio Montagnani Skype : antoniomontag