Firewall configurations

[RGKärcher]

Dear Edward , 

sorry , for the lack of information ...

I have an ADSL connection , dynamic ip , ADSL router
configured under eth0

please give me some directions about this , because a
while ago , I enter the setup , and activate some
definitions of the firewall and later I couldn't
connect to the internet ...

so I had to make a new connection using adsl-setup ,
and it trow me a lot of errors ... 

but fourtunately I can use internet , but I have
serious doubts about the iptables configuration .

for example if I use nmap or netstat and test
localhost , it says to me that the port 25 is open ...


if I use the IP that my ISP gave me , it says that the
port 25 is closed..


thanks in advance for the answers ,

greetings 

Richard karcher






 --- Edward Dekkers <edward at tripled.iinet.net.au>
escribió:

> RGKärcher wrote:
> > hi guys ,
> > 
> > I want to ask you , about the Iptables
> configurations
> > ...
> > 
> > When I run nmap ,it says me that I have an
> specific
> > port open ...
> > 
> > When I do a web test of open port at
> > http://scan.sygatetech.com/prequickscan.html
> > 
> > Its says me another ports open or closed ....
> > 
> > when I run netstat it says me another completely
> > different thing ...
> > 
> > I dont know what to trust ...
> > 
> > for example I want to close the udp port 111 and
> icmp
> > 8 . Can I do this for example in the terminal :
> > 
> >  ./iptables -A INPUT -p udp --dport 111 -j DROP
> > 
> > and the port will automatically be closed ?
> > 
> > or should I restart the machine ?
> > 
> > thanks in advance , 
> > 
> > richard karcher
> 
> A lot depend on how you are connected to the
> internet, and unfortunately 
> you do not mention this.
> 
> You also do not mention your iptables rules either.
> 
> In theory the line you mention above should work
> without restarting the 
> PC (and dropping the ./ if you're not in the /sbin
> folder).
> 
> However this can depend so much on your other rules
> I cannot say it will.
> 
> How about you give us more information?
> 
> Regards,
> Ed.
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Ricardo german Kärcher

gerkarcher at yahoo.com.ar
german at gnosticos.net
rgkx at imaginator.com


	


	
		
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