insert firewall rule at the head of the chain instead of appending

2020-08-16 15:45:18 +02:00 · 2020-08-16 15:45:18 +02:00 · a6d14a3b06
parent d02c0ddd82
commit a6d14a3b06
1 changed files with 1 additions and 1 deletions
--- a/tcp_syni.nim
+++ b/tcp_syni.nim
@ -23,7 +23,7 @@ type

 proc addFirewallRule(srcIp: IpAddress, srcPort: Port,
                     dstIp: IpAddress, dstPort: Port) {.async.} =
-  let firewall_cmd = fmt"""iptables -A INPUT \
+  let firewall_cmd = fmt"""iptables -I INPUT \
  -d {srcIp} \
  -p icmp \
  --icmp-type time-exceeded \