Witam - jestem od niedawna posiadaczem serwera z zainstalowana ostatnią wersją NND ( styczen 2006). Problem jest nastepujacy:
Ostatnio dosc czesto wiesza sie polaczenie z internetem - po wykonanaiu reboot internet powraca. Sprawdzalem poleceniem ifconfig i karty eth0 (internet) i eth1 - LAN jest wszystko OK. Zauwazylem dziwne zmiany w iptables. Po wlaczeniu serwera i poprawnej pracy wpisy wygladaja nastepujaco:
[root@router jaceks]# iptables -L -v
Chain INPUT (policy DROP 14 packets, 2048 bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT all -- lo any anywhere anywhere
0 0 DROP tcp -- any any anywhere anywhere multiport dports 135,445
0 0 REJECT tcp -- any any anywhere anywhere tcp dpt:auth reject-with icmp-port-unreachable
0 0 REJECT tcp -- any any anywhere anywhere tcp dpt:1080 reject-with icmp-port-unreachable
0 0 ACCEPT icmp -- any any anywhere anywhere icmp echo-request limit: avg 1/sec burst 5
1614 132K ACCEPT all -- !eth0 any anywhere anywhere
4 824 ACCEPT all -- any any anywhere anywhere state RELATED,ESTABLISHED
Chain FORWARD (policy DROP 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 DROP all -- any any anywhere
www.cdm.net.pl
0 0 ACCEPT all -- any lo anywhere anywhere
0 0 DROP tcp -- any any anywhere anywhere multiport dports 135,445
15 987 ACCEPT all -- !eth0 any anywhere anywhere
12 629 ACCEPT all -- any any anywhere anywhere state RELATED,ESTABLISHED
Chain OUTPUT (policy ACCEPT 1399 packets, 333K bytes)
pkts bytes target prot opt in out source destination
[root@router jaceks]#
ten wpis do.
www.cdm.net.pl sluzy zablokowaniu polaczeniu z ta strona dla uzytkownikow sieci
Po pewnym czasie, jak zauwaze, ze net padl, zapis w iptables wyglada tak:
[root@router jaceks]# iptables -L -v
Chain INPUT (policy DROP 128 packets, 16192 bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT all -- lo any anywhere anywhere
0 0 DROP tcp -- any any anywhere anywhere multiport dports 135,445
0 0 REJECT tcp -- any any anywhere anywhere tcp dpt:auth reject-with icmp-port-unreachable
0 0 REJECT tcp -- any any anywhere anywhere tcp dpt:1080 reject-with icmp-port-unreachable
0 0 ACCEPT icmp -- any any anywhere anywhere icmp echo-request limit: avg 1/sec burst 5
142 15583 ACCEPT all -- !eth0 any anywhere anywhere
1 217 ACCEPT all -- any any anywhere anywhere state RELATED,ESTABLISHED
Chain FORWARD (policy DROP 9 packets, 551 bytes)
pkts bytes target prot opt in out source destination
0 0 DROP all -- any any anywhere 193.110.142.50
0 0 ACCEPT all -- any lo anywhere anywhere
0 0 DROP tcp -- any any anywhere anywhere multiport dports 135,445
5295 865K ACCEPT all -- !eth0 any anywhere anywhere
5411 3393K ACCEPT all -- any any anywhere anywhere state RELATED,ESTABLISHED
Chain OUTPUT (policy ACCEPT 58 packets, 8865 bytes)
pkts bytes target prot opt in out source destination
[root@router jaceks]#
Nie rozumiem, skad sie wzial wpis w FORWARD 193.110.142.50
Na serwerze internetu tez nie ma? Prosze o pomoc, co moze powodowac takie, a nie inne zachowanie serwera? Uzywam "czystego" firewall-a bez squida itp.