Iptables question

Clint Dilks clintd at scms.waikato.ac.nz
Fri Feb 12 00:44:41 UTC 2010


Craig White wrote:
> Perhaps this is just a thing with Linode VPS but it is Fedora 11.
>
> I would think that given my iptables rules, this shouldn't happen
>
> # ssh root at localhost
> ssh: connect to host localhost port 22: Connection refused
>
> Yes, port 22 is not allowed for eth0 but it should be on 'localhost'
>
> # cat /etc/hosts
> 127.0.0.1   localhost localhost.localdomain localhost4
> localhost4.localdomain4
> ::1         localhost localhost.localdomain localhost6
> localhost6.localdomain6
>
> I am using the following rules...
>
> :INPUT ACCEPT [0:0]                                                    
> :FORWARD ACCEPT [0:0]                                                  
> :OUTPUT ACCEPT [0:0]                                                   
> :RH-Firewall-1-INPUT - [0:0]                                           
> -A INPUT -j RH-Firewall-1-INPUT                                        
> -A FORWARD -j RH-Firewall-1-INPUT                                      
> -A RH-Firewall-1-INPUT -i lo -j ACCEPT                                 
> -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT               
> -A RH-Firewall-1-INPUT -p 50 -j ACCEPT                                 
> -A RH-Firewall-1-INPUT -p 51 -j ACCEPT                                 
> -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j
> ACCEPT
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j
> ACCEPT
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j
> ACCEPT
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 465 -j
> ACCEPT
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 587 -j
> ACCEPT
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 993 -j
> ACCEPT
> # Finally
> -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
> COMMIT
> *mangle
> :FORWARD ACCEPT [0:0]
> :INPUT ACCEPT [0:0]
> :OUTPUT ACCEPT [0:0]
> :PREROUTING ACCEPT [0:0]
> :POSTROUTING ACCEPT [0:0]
> COMMIT
> # Completed
> *nat
> :OUTPUT ACCEPT [0:0]
> :PREROUTING ACCEPT [0:0]
> :POSTROUTING ACCEPT [0:0]
> COMMIT
> # Completed
>
> WTF?
>
> Craig
>
>
>   
Hi, Are you also using /etc/hosts.allow and /etc/hosts.deny ?



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