centos + drbd + firewall

Ahoj,

rozbehal som si CentOS 6, pri instalacii som zvolil typ instalcie ako virtual host.
Po instalacii je defaltne firewall nastaveny takto:

# Generated by iptables-save v1.4.7 on Mon Dec 19 21:42:23 2011
*nat
:PREROUTING ACCEPT [5577:1004942]
:POSTROUTING ACCEPT [26:2932]
:OUTPUT ACCEPT [26:2932]
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p tcp -j MASQUERADE --to-ports 1024-65535 
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p udp -j MASQUERADE --to-ports 1024-65535 
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE 
COMMIT
# Completed on Mon Dec 19 21:42:23 2011
# Generated by iptables-save v1.4.7 on Mon Dec 19 21:42:23 2011
*mangle
:PREROUTING ACCEPT [12327905:228376874615]
:INPUT ACCEPT [12327901:228376874439]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [3276458:392269404]
:POSTROUTING ACCEPT [3276458:392269404]
-A POSTROUTING -o virbr0 -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill 
COMMIT
# Completed on Mon Dec 19 21:42:23 2011
# Generated by iptables-save v1.4.7 on Mon Dec 19 21:42:23 2011
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [3276399:392264544]
-A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT 
-A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT 
-A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT 
-A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT 
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 
-A INPUT -p icmp -j ACCEPT 
-A INPUT -i lo -j ACCEPT 
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT 
-A INPUT -j REJECT --reject-with icmp-host-prohibited 
-A FORWARD -d 192.168.122.0/24 -o virbr0 -m state --state RELATED,ESTABLISHED -j ACCEPT 
-A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT 
-A FORWARD -i virbr0 -o virbr0 -j ACCEPT 
-A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable 
-A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable 
-A FORWARD -j REJECT --reject-with icmp-host-prohibited 
COMMIT
# Completed on Mon Dec 19 21:42:23 2011

2. nasledne som nainstaloval a nakonfiguroval DRBD, na eth0 som priradil 172.16.0.1/255.255.255.252 a na druhom stroji eth0 172.16.0.2/255.255.255.252

a teraz moj problem: ked je firewal zapnuty v defaultnom nastaveni jak mi ho centos nastavil po instalcii, a zapnem drbd tak sa proste drbd nespoji s druhym strojom a nesynchronizuje sa, akonahle vsak na jednom stroji vypnem firewall: service iptables stop, drbd sa rozbehne a pekne sa zosynchronizuje... ked aj pocas synchronizacie zapnem naspat firewall drbd sa uz synchronizuje dalej - nespadne to...


Je to divne pretoze v tom firewali je predsa INPUT FORWARD OUTPUT v defaultnej politike ako ACCEPT, cim to teda moze byt, nebude tonejaky bug v centos?

Dakujem za nakopnutie