Add ssh invalid reports by day and by user
authorSiraaj Khandkar <siraaj@khandkar.net>
Thu, 4 Mar 2021 11:55:37 +0000 (06:55 -0500)
committerSiraaj Khandkar <siraaj@khandkar.net>
Thu, 4 Mar 2021 11:55:37 +0000 (06:55 -0500)
home/lib/login_functions.sh

index 1f69061..426cbb2 100644 (file)
@@ -678,19 +678,75 @@ status() {
     # TODO: iptables summary
 }
 
-ssh_invalid_attempts_from() {
+ssh_invalid_by_addr() {
     awk '
         /: Invalid user/ && $5 ~ /^sshd/ {
-            u=$8
             addr=$10 == "port" ? $9 : $10
             max++
-            curr[addr]++
+            by_addr[addr]++
         }
 
         END {
-            for (addr in curr)
-                if ((c = curr[addr]) > 1)
-                    print c, max, addr
+            for (addr in by_addr)
+                if ((c = by_addr[addr]) > 1)
+                    printf "%d %d %s\n", c, max, addr
+        }
+        ' \
+        /var/log/auth.log \
+        /var/log/auth.log.1 \
+    | sort -n -k 1 \
+    | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
+    | column -t
+}
+
+ssh_invalid_by_day() {
+    awk '
+       BEGIN {
+           m["Jan"] = "01"
+           m["Feb"] = "02"
+           m["Mar"] = "03"
+           m["Apr"] = "04"
+           m["May"] = "05"
+           m["Jun"] = "06"
+           m["Jul"] = "07"
+           m["Aug"] = "08"
+           m["Sep"] = "09"
+           m["Oct"] = "10"
+           m["Nov"] = "11"
+           m["Dec"] = "12"
+       }
+
+       /: Invalid user/ && $5 ~ /^sshd/ {
+           day = m[$1] "-" $2
+           max++
+           by_day[day]++
+       }
+
+       END {
+           for (day in by_day)
+               if ((c = by_day[day]) > 1)
+                   printf "%d %d %s\n", c, max, day
+       }
+        ' \
+        /var/log/auth.log \
+        /var/log/auth.log.1 \
+    | sort -n -k 1 \
+    | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
+    | column -t
+}
+
+ssh_invalid_by_user() {
+    awk '
+        /: Invalid user/ && $5 ~ /^sshd/ {
+            user=$8
+            max++
+            by_user[user]++
+        }
+
+        END {
+            for (user in by_user)
+                if ((c = by_user[user]) > 1)
+                    printf "%d %d %s\n", c, max, user
         }
         ' \
         /var/log/auth.log \
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