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It is not nice when the "fw ctl conntab" is displayed in an unformatted format. In this way, one always searches for the correct connections with the parameters in the output. I have created a nice overview "sorted by rule numbers". An easy connection table version:-)
When you execute this oneliner, a new cli command "econntab" is created:
cat <<EOT > /usr/bin/econntab
printf '%.s-' {1..132};echo -e "\nRule Proto Source IP S-Port Destination IP D-Port Timeout State";printf '%.s-' {1..132};fw ctl conntab | awk '{print \$6 " "\$2 \$3 \$4 " "\$5 " "\$8}' | sed -e 's/src=//g' | sed -e 's/\],dest=\[/ /g' | sed -e 's/\],/ /g' | sed -e 's/)\;//g' | sed -e 's/\[//g' | sed -e 's/rule\=/ /g' | sed -e 's/\,/ /g' | sed -e 's/state\=/ /g' | sed -e 's/Ifn[c,s]in\=[0-9]*//g' | sed -e 's/Ifn[c,s]out\=[0-9]*//g' | awk '{printf "%.6s \t%10s \t%15s \t%6s \t%15s \t%7s \t%10s \t%20s \n", \$1, \$6, \$2, \$3 ,\$4, \$5, \$7 ,\$8}' 2>&1 | sort -n | uniq
EOT
chmod 770 /usr/bin/econntab
After that, you only need to execute the following cli command in expert mode:
# econntab
With grep you can search for many interesting parameters of the connection table:
# econntab | grep SYN_SENT --> connections that have only sent one TCP SYN packet
# econntab | grep FIN --> connections that are in the process of being disconnected
# econntab | grep ^'61' --> for example all connections of the rule 61
# econntab | grep 1.1.1.1 --> all connections for IP 1.1.1.1
# econntab | grep ICPM --> all ICPM connections
# econntab | grep ' 443 ' | grep "SYN" --> all https connections in "SYN" state
# econntab | grep ' [0-9]/' --> all connections that time out in the next 10 seconds
# econntab | grep -E '^[1-9][0-9][0-9][0-9][0-9][0-9]' --> all implied rules
# econntab | grep -v -E '^[1-9][0-9][0-9][0-9][0-9][0-9]' --> all without implied rules
# econntab | grep '00000070' --> VRRP connections
# econntab | grep '0000002f' --> GRE connections
PS:
If you see rules >100000, this is not an error, but it is an implied rule.
It is not nice when the "fw ctl conntab" is displayed in an unformatted format. In this way, one always searches for the correct connections with the parameters in the output. I have created a nice overview "sorted by rule numbers". An easy connection table version:-)
When you execute this oneliner, a new cli command "econntab" is created:
cat <<EOT > /usr/bin/econntab printf '%.s-' {1..132};echo -e "\nRule Proto Source IP S-Port Destination IP D-Port Timeout State";printf
...;
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