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Forum Discussion

hung_105573's avatar
hung_105573
Icon for Nimbostratus rankNimbostratus
Jul 19, 2012

Problem NAT

Hi ALL       I'm facing problem the NAT on F5 ( LTM)     My network :     Server-----FW-------- ------Line internet2   F5(LTM) ---...
config
design
nitass's avatar
nitass
Icon for Employee rankEmployee
Jul 19, 2012
it work some times (about 20 min) then so users can not access internet , it times at pc of users can not ping 8.8.8.8 , but on F5 then ping 8.8.8.8 ok and F5 can not NAT source userswhen problem happens, can you try to run tcpdump on f5 to see what is going on?

 

 

to screen

 

tcpdump -nni 0.0 host 8.8.8.8 and icmp

 

 

to file

 

tcpdump -nni 0.0:nnn -s0 -w /var/tmp/output.pcap host 8.8.8.8 and icmp