[OpenWrt-Users] Help routing between wireless and wired segments

[Bob Diss]

> > It seems like the 54G is not forwarding packets
> > between the to network segments.  Is that true? 
> Is
> > there additional configuration that needs to be
> done? 
> > Or something else I can try?
> 
> Well, have you activated packet forwarding ?
> Look at the output of:
> cat /proc/sys/net/ipv4/ip_forward
> if it's '0', packet forwarding is not activated.
> To activate it, do:
> echo 1 > /proc/sys/net/ipv4/ip_forward
> 
> If it didn't solve your problem, please send the
> output of:
> ip route show all
> iptables -L
> iptable -t nat -L
> iptables -t mangle -L
> 

Forwarding is/was enabled, and still no luck.

root at OpenWrt:~# cat /proc/sys/net/ipv4/ip_forward 
1
root at OpenWrt:~# netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags 
 MSS Window  irtt Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     
   0 0          0 br0
192.168.15.0    0.0.0.0         255.255.255.0   U     
   0 0          0 br1
0.0.0.0         192.168.15.1    0.0.0.0         UG    
   0 0          0 br1
root at OpenWrt:~# iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination  
      
DROP       all  --  anywhere             anywhere     
      state INVALID 
ACCEPT     all  --  anywhere             anywhere     
      state RELATED,ESTABLISHED 
DROP       tcp  --  anywhere             anywhere     
      tcp option=!2 flags:SYN/SYN 
input_rule  all  --  anywhere             anywhere    
       
LAN_ACCEPT  all  --  anywhere             anywhere    
       
ACCEPT     icmp --  anywhere             anywhere     
      
ACCEPT     gre  --  anywhere             anywhere     
      
REJECT     tcp  --  anywhere             anywhere     
      reject-with tcp-reset 
REJECT     all  --  anywhere             anywhere     
      reject-with icmp-port-unreachable 

Chain FORWARD (policy DROP)
target     prot opt source               destination  
      
DROP       all  --  anywhere             anywhere     
      state INVALID 
TCPMSS     tcp  --  anywhere             anywhere     
      tcp flags:SYN,RST/SYN TCPMSS clamp to PMTU 
ACCEPT     all  --  anywhere             anywhere     
      state RELATED,ESTABLISHED 
forwarding_rule  all  --  anywhere            
anywhere            
ACCEPT     all  --  anywhere             anywhere     
      
ACCEPT     all  --  anywhere             anywhere     
      

Chain LAN_ACCEPT (1 references)
target     prot opt source               destination  
      
RETURN     all  --  anywhere             anywhere     
      
ACCEPT     all  --  anywhere             anywhere     
      

Chain OUTPUT (policy DROP)
target     prot opt source               destination  
      
DROP       all  --  anywhere             anywhere     
      state INVALID 
ACCEPT     all  --  anywhere             anywhere     
      state RELATED,ESTABLISHED 
output_rule  all  --  anywhere             anywhere   
        
ACCEPT     all  --  anywhere             anywhere     
      
REJECT     tcp  --  anywhere             anywhere     
      reject-with tcp-reset 
REJECT     all  --  anywhere             anywhere     
      reject-with icmp-port-unreachable 

Chain forward_vlan1 (1 references)
target     prot opt source               destination  
      

Chain forwarding_rule (1 references)
target     prot opt source               destination  
      
forward_vlan1  all  --  anywhere             anywhere 
          

Chain input_rule (1 references)
target     prot opt source               destination  
      
input_vlan1  all  --  anywhere             anywhere   
        

Chain input_vlan1 (1 references)
target     prot opt source               destination  
      

Chain output_rule (1 references)
target     prot opt source               destination  
      
root at OpenWrt:~# iptables -t nat -L
Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination  
      
prerouting_rule  all  --  anywhere            
anywhere            

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination  
      
postrouting_rule  all  --  anywhere            
anywhere            
MASQUERADE  all  --  anywhere             anywhere    
       

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination  
      

Chain postrouting_rule (1 references)
target     prot opt source               destination  
      

Chain prerouting_rule (1 references)
target     prot opt source               destination  
      
prerouting_vlan1  all  --  anywhere            
anywhere            

Chain prerouting_vlan1 (1 references)
target     prot opt source               destination  
      
root at OpenWrt:~# iptables -t mangle -L
Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination  
      

Chain INPUT (policy ACCEPT)
target     prot opt source               destination  
      

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination  
      

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination  
      

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination  
      
root at OpenWrt:~# 



 
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