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View Full Version : [ubuntu] can't set firewall


bhomas
July 14th, 2012, 11:16 PM
I used this command

iptables -A OUTPUT -p tcp -s 192.168.1.0-192.168.1.255 --sport 5432 -d 0/0 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT

to open up firewall in my VirtualBox running Ubuntu. This worked in another instance before.

now I get a
iptables v1.4.12: host/network `192.168.1.0-192.168.1.255' not found

I ping the host system by ip
ping 192.168.1.103, and it responded.

Why would iptables command fail?
Kirk Schnable
July 15th, 2012, 02:04 AM
I've never seen the network portion of a command formatted like that.

Instead of what you did:

iptables -A OUTPUT -p tcp -s 192.168.1.0-192.168.1.255 --sport 5432 -d 0/0 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT

Try:

iptables -A OUTPUT -p tcp -s 192.168.1.0/24 --sport 5432 -d 0/0 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT

Kirk