parametrs in /etc/sysctl.conf in suse

[deepak_cucek]

--------------------------------------------------------------------------------

for disabling ipforwarding in suse , we have to add

net.ipv4.ip_forward=0 entry in /etc/sysctl.conf

and for disabling synflooding
net.ipv4.tcp_cyncookies=0

actually my doubt is in real time how we can check whether it is really taking affect in system or not .. [not only for these parameters also for IP source routing , ICMP echo messages , ICMP redirect acceptance.....etc]

in my lab set up i have 1 PC with windows and other with Suse 10

is there any tool available for suse for checking the incoming packets rate ...

and is there any tool available for windows to create some packet flooding to other machines in the network.

BAsically i need to verify the realt time functionality of the parameters in /etc/sysctl.conf like it really blocking IP spoofing / IP source rooting .... etc

thanks in advance

[robertdaleweir]

--------------------------------------------------------------------------------

for disabling ipforwarding in suse , we have to add

net.ipv4.ip_forward=0 entry in /etc/sysctl.conf

and for disabling synflooding
net.ipv4.tcp_cyncookies=0

actually my doubt is in real time how we can check whether it is really taking affect in system or not .. [not only for these parameters also for IP source routing , ICMP echo messages , ICMP redirect acceptance.....etc]

in my lab set up i have 1 PC with windows and other with Suse 10

is there any tool available for suse for checking the incoming packets rate ...

and is there any tool available for windows to create some packet flooding to other machines in the network.

BAsically i need to verify the realt time functionality of the parameters in /etc/sysctl.conf like it really blocking IP spoofing / IP source rooting .... etc

thanks in advance

Hi
A tool that is considered excellent for network analysis is NTOP. A description can be read at the URL /nst.sourceforge.net/nst/docs/user/ch03s11.html Just add the http :// preface to it. Another tool is Ethereal but is quite complicated and a long learning curve. Both of these can be had for Linux OSes, such as SUSE among others.
Hope this helps. Cheers...
Robert