diff --git a/api/tacticalrmm/agents/management/commands/bulk_change_checkin.py b/api/tacticalrmm/agents/management/commands/bulk_change_checkin.py
new file mode 100644
index 00000000..804e86a1
--- /dev/null
+++ b/api/tacticalrmm/agents/management/commands/bulk_change_checkin.py
@@ -0,0 +1,93 @@
+from django.core.management.base import BaseCommand
+
+from agents.models import Agent
+from clients.models import Client, Site
+
+
+class Command(BaseCommand):
+    help = "Bulk update agent offline/overdue time"
+
+    def add_arguments(self, parser):
+        parser.add_argument("time", type=int, help="Time in minutes")
+        parser.add_argument(
+            "--client",
+            type=str,
+            help="Client Name",
+        )
+        parser.add_argument(
+            "--site",
+            type=str,
+            help="Site Name",
+        )
+        parser.add_argument(
+            "--offline",
+            action="store_true",
+            help="Offline",
+        )
+        parser.add_argument(
+            "--overdue",
+            action="store_true",
+            help="Overdue",
+        )
+        parser.add_argument(
+            "--all",
+            action="store_true",
+            help="All agents",
+        )
+
+    def handle(self, *args, **kwargs):
+        time = kwargs["time"]
+        client_name = kwargs["client"]
+        site_name = kwargs["site"]
+        all_agents = kwargs["all"]
+        offline = kwargs["offline"]
+        overdue = kwargs["overdue"]
+        agents = None
+
+        if offline and time < 2:
+            self.stdout.write(self.style.ERROR("Minimum offline time is 2 minutes"))
+            return
+
+        if overdue and time < 3:
+            self.stdout.write(self.style.ERROR("Minimum overdue time is 3 minutes"))
+            return
+
+        if client_name:
+            try:
+                client = Client.objects.get(name=client_name)
+            except Client.DoesNotExist:
+                self.stdout.write(
+                    self.style.ERROR(f"Client {client_name} doesn't exist")
+                )
+                return
+
+            agents = Agent.objects.filter(site__client=client)
+
+        elif site_name:
+            try:
+                site = Site.objects.get(name=site_name)
+            except Site.DoesNotExist:
+                self.stdout.write(self.style.ERROR(f"Site {site_name} doesn't exist"))
+                return
+
+            agents = Agent.objects.filter(site=site)
+
+        elif all_agents:
+            agents = Agent.objects.all()
+
+        if agents:
+            if offline:
+                agents.update(offline_time=time)
+                self.stdout.write(
+                    self.style.SUCCESS(
+                        f"Changed offline time on {len(agents)} agents to {time} minutes"
+                    )
+                )
+
+            if overdue:
+                agents.update(overdue_time=time)
+                self.stdout.write(
+                    self.style.SUCCESS(
+                        f"Changed overdue time on {len(agents)} agents to {time} minutes"
+                    )
+                )
diff --git a/docs/docs/install_server.md b/docs/docs/install_server.md
index 93637732..8f6205d9 100644
--- a/docs/docs/install_server.md
+++ b/docs/docs/install_server.md
@@ -52,8 +52,8 @@ ufw allow ssh
 
 Allow ssh from only allowed IP's (__highly__ recommended)
 ```bash
-ufw allow from X.X.X.X to any port 22
-ufw allow from X.X.X.X to any port 22
+ufw allow proto tcp from X.X.X.X to any port 22
+ufw allow proto tcp from X.X.X.X to any port 22
 ```
 
 Enable and activate the firewall
@@ -69,7 +69,7 @@ We'll be using `example.com` as our domain for this example.
     The RMM uses 3 different sites. The Vue frontend e.g. `rmm.example.com` which is where you'll be accesing your RMM from the browser, the REST backend e.g. `api.example.com` and Meshcentral e.g. `mesh.example.com`
 
 
-Get the public IP of your server with `curl icanhazip.com`<br/>
+Get the public IP of your server with `curl https://icanhazip.tacticalrmm.io`<br/>
 Open the DNS manager of wherever the domain you purchased is hosted.<br/>
 Create 3 A records: `rmm`, `api` and `mesh` and point them to the public IP of your server:
 
diff --git a/docs/docs/management_cmds.md b/docs/docs/management_cmds.md
index cf643d78..dafdd6ca 100644
--- a/docs/docs/management_cmds.md
+++ b/docs/docs/management_cmds.md
@@ -39,4 +39,32 @@ python manage.py remove_orphaned_tasks
 #### Create a MeshCentral agent invite link
 ```bash
 python manage.py get_mesh_exe_url
-```
\ No newline at end of file
+```
+
+#### Bulk update agent offline/overdue time
+
+```bash
+wget -q https://raw.githubusercontent.com/wh1te909/tacticalrmm/develop/api/tacticalrmm/agents/management/commands/bulk_change_checkin.py -O /rmm/api/tacticalrmm/agents/management/commands/bulk_change_checkin.py
+```
+Examples:
+
+Change offline time on all agents to 5 minutes
+```bash
+python manage.py bulk_change_checkin --offline --all 5
+```
+
+Change overdue time on all agents to 10 minutes
+```bash
+python manage.py bulk_change_checkin --overdue --all 10
+```
+
+Change overdue time on all agents in client named *Example Client* to 12 minutes
+```bash
+python manage.py bulk_change_checkin --overdue --client "Example Client" 12
+```
+
+Change offline time on all agents in site named *Example Site* to 2 minutes
+```bash
+python manage.py bulk_change_checkin --offline --site "Example Site" 2
+```
+