diff --git a/bin/pibs-isn.c b/bin/pibs-isn.c
new file mode 100644
index 0000000..1e94cb7
--- /dev/null
+++ b/bin/pibs-isn.c
@@ -0,0 +1,74 @@
+/*
+* pibs - Create lists of isn having the same value than ip address
+*
+* Copyright (C) 2020 Gerard Wagener
+* Copyright (C) 2020 CIRCL Computer Incident Response Center Luxembourg
+* (SMILE gie).
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Affero General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program. If not, see .
+*/
+#include
+#define __USE_XOPEN
+#include
+#include "pibs.h"
+
+void usage(void)
+{
+ printf("Create lists of targets under SYN floods for BGP Ranking\n");
+ printf("\n");
+ printf("OPTIONS\n");
+ printf(" -h Shows this screen\n");
+ printf(" -r inputfile\n");
+ printf(" Read pcap file from inputfile\n");
+ printf("\n");
+ printf("DIRECTORY STRUCTURE\n");
+ printf("/port/year/month/year-month-day.txt\n");
+}
+
+void process(pibs_t* pibs, wtap *wth, uint8_t* eth,
+struct ip* ipv4, struct tcphdr* tcp)
+{
+ if (ipv4->ip_dst.s_addr == tcp->seq) {
+ printf("%x\n",ntohl(tcp->seq));
+ }
+}
+
+int main(int argc, char* argv[])
+{
+ pibs_t* pibs;
+ int opt;
+ pibs = init();
+
+ while ((opt = getopt(argc, argv, "hr:d:")) != -1) {
+ printf("%d\n", opt);
+ switch (opt) {
+ case 'h':
+ usage();
+ break;
+ case 'r':
+ strncpy(pibs->filename, optarg, FILENAME_MAX);
+ pibs->filename[FILENAME_MAX-1] = '\0';
+ break;
+ }
+ }
+
+ //Set call back function
+ pibs->synseen_callback = &process;
+
+ if (pibs->filename[0]) {
+ process_file(pibs);
+ }
+
+ return EXIT_SUCCESS;
+}