1INCOMPATIBILITIES: 2 3- The REJECT target has an '--reject-with admin-prohib' option which used 4 with kernels that do not support it, will result in a plain DROP instead 5 of REJECT. Use with caution. 6 Kernels that do support it: 7 2.4 - since 2.4.22-pre9 8 2.6 - all 9 10- There are some issues related to upgrading from 1.2.x to 1.3.x on a system 11 with dynamic ruleset changes during runtime. (Please see 12 https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=334). 13 After upgrading from 1.2 to 1.3, it suggest go do an iptables-save, then 14 iptables-restore to ensure your dynamic rule changes continue to work. 15