diff --git a/Cargo.lock b/Cargo.lock
index 6dd97c7..50e3461 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -343,6 +343,18 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "mio"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4569e456d394deccd22ce1c1913e6ea0e54519f577285001215d33557431afe4"
+dependencies = [
+ "hermit-abi 0.3.9",
+ "libc",
+ "wasi",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "nix"
 version = "0.29.0"
@@ -367,21 +379,11 @@ dependencies = [
  "inotify",
  "kqueue",
  "libc",
- "mio",
+ "mio 0.8.11",
  "walkdir",
  "windows-sys 0.45.0",
 ]
 
-[[package]]
-name = "num_cpus"
-version = "1.16.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4161fcb6d602d4d2081af7c3a45852d875a03dd337a6bfdd6e06407b61342a43"
-dependencies = [
- "hermit-abi 0.3.9",
- "libc",
-]
-
 [[package]]
 name = "object"
 version = "0.36.1"
@@ -420,7 +422,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.71",
+ "syn 2.0.72",
 ]
 
 [[package]]
@@ -581,7 +583,7 @@ checksum = "e0cd7e117be63d3c3678776753929474f3b04a43a080c744d6b0ae2a8c28e222"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.71",
+ "syn 2.0.72",
 ]
 
 [[package]]
@@ -656,9 +658,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.71"
+version = "2.0.72"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b146dcf730474b4bcd16c311627b31ede9ab149045db4d6088b3becaea046462"
+checksum = "dc4b9b9bf2add8093d3f2c0204471e951b2285580335de42f9d2534f3ae7a8af"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -676,30 +678,29 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.38.1"
+version = "1.39.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb2caba9f80616f438e09748d5acda951967e1ea58508ef53d9c6402485a46df"
+checksum = "d040ac2b29ab03b09d4129c2f5bbd012a3ac2f79d38ff506a4bf8dd34b0eac8a"
 dependencies = [
  "backtrace",
  "bytes",
  "libc",
- "mio",
- "num_cpus",
+ "mio 1.0.1",
  "pin-project-lite",
  "signal-hook-registry",
  "tokio-macros",
- "windows-sys 0.48.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "tokio-macros"
-version = "2.3.0"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f5ae998a069d4b5aba8ee9dad856af7d520c3699e6159b185c2acd48155d39a"
+checksum = "693d596312e88961bc67d7f1f97af8a70227d9f90c31bba5806eec004978d752"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.71",
+ "syn 2.0.72",
 ]
 
 [[package]]
diff --git a/src/iptables_save.rs b/src/iptables_save.rs
index bf5fcff..b328e5c 100644
--- a/src/iptables_save.rs
+++ b/src/iptables_save.rs
@@ -1,7 +1,7 @@
 use std::{path::Path, process::Command};
 
-pub fn save_iptables(path: &Path) {
-    let _ = Command::new("iptables-save")
+pub fn save_iptables(path: &Path) -> std::io::Result<std::process::Output> {
+    Command::new("iptables-save")
         .args(["-f", path.to_str().unwrap()])
-        .output();
+        .output()
 }
diff --git a/src/iptables_wrapper.rs b/src/iptables_wrapper.rs
index cad5e0d..05ea955 100644
--- a/src/iptables_wrapper.rs
+++ b/src/iptables_wrapper.rs
@@ -1,7 +1,6 @@
-use std::collections::HashMap;
-
 use iptables::IPTables;
 use regex::Regex;
+use std::collections::HashMap;
 
 pub fn is_port_secured(port: u16, docker: bool) -> bool {
     let iptables = iptables::new(false).unwrap();
@@ -80,11 +79,15 @@ pub fn map_secured_ports_allowed_ips(docker: bool) -> HashMap<u16, Vec<String>>
     result
 }
 
-pub fn secure_port_rule(port: u16) -> String {
+fn secure_port_rule(port: u16) -> String {
     format!("-p tcp --dport {} -j DROP", port)
 }
 
-pub fn secure_port(port: u16, docker: bool, position: Option<i32>) {
+pub fn secure_port(
+    port: u16,
+    docker: bool,
+    position: Option<i32>,
+) -> Result<(), Box<dyn std::error::Error>> {
     let iptables = iptables::new(false).unwrap();
 
     let table = "filter";
@@ -95,22 +98,23 @@ pub fn secure_port(port: u16, docker: bool, position: Option<i32>) {
     } else {
         append_unique(&iptables, table, &chain, &rule)
     }
-
-    println!("Port {} secured", port);
 }
 
-pub fn unsecure_port(port: u16, docker: bool) {
+pub fn unsecure_port(port: u16, docker: bool) -> Result<(), Box<dyn std::error::Error>> {
     let iptables = iptables::new(false).unwrap();
-    let _ = iptables.delete("filter", &get_chain(docker), &secure_port_rule(port));
-
-    println!("Port {} unsecured", port);
+    iptables.delete("filter", &get_chain(docker), &secure_port_rule(port))
 }
 
-pub fn allow_ip_for_port_rule(port: u16, ip: &str) -> String {
+fn allow_ip_for_port_rule(port: u16, ip: &str) -> String {
     format!("-p tcp --dport {} -s {} -j ACCEPT", port, ip)
 }
 
-pub fn allow_ip_for_port(ip: &str, port: u16, docker: bool, position: Option<i32>) {
+pub fn allow_ip_for_port(
+    ip: &str,
+    port: u16,
+    docker: bool,
+    position: Option<i32>,
+) -> Result<(), Box<dyn std::error::Error>> {
     let iptables = iptables::new(false).unwrap();
 
     let table = "filter";
@@ -121,18 +125,19 @@ pub fn allow_ip_for_port(ip: &str, port: u16, docker: bool, position: Option<i32
     } else {
         append_unique(&iptables, table, &chain, &rule)
     }
-
-    println!("Allowed {} to access {}", ip, port);
 }
 
-pub fn remove_allow_ip_for_port(ip: &str, port: u16, docker: bool) {
+pub fn remove_allow_ip_for_port(
+    ip: &str,
+    port: u16,
+    docker: bool,
+) -> Result<(), Box<dyn std::error::Error>> {
     let iptables = iptables::new(false).unwrap();
-    let _ = iptables.delete(
+    iptables.delete(
         "filter",
         &get_chain(docker),
         &allow_ip_for_port_rule(port, ip),
-    );
-    println!("Removed access of {} to {}", ip, port);
+    )
 }
 
 fn get_chain(docker: bool) -> String {
@@ -143,12 +148,23 @@ fn get_chain(docker: bool) -> String {
     }
 }
 
-fn append_unique(iptables: &IPTables, table: &str, chain: &str, rule: &str) {
-    let _ = iptables.append_unique(table, chain, rule);
+fn append_unique(
+    iptables: &IPTables,
+    table: &str,
+    chain: &str,
+    rule: &str,
+) -> Result<(), Box<dyn std::error::Error>> {
+    iptables.append_unique(table, chain, rule)
 }
 
-fn insert_unique(iptables: &IPTables, table: &str, chain: &str, rule: &str, position: i32) {
-    let _ = iptables.insert_unique(table, chain, rule, position);
+fn insert_unique(
+    iptables: &IPTables,
+    table: &str,
+    chain: &str,
+    rule: &str,
+    position: i32,
+) -> Result<(), Box<dyn std::error::Error>> {
+    iptables.insert_unique(table, chain, rule, position)
 }
 
 fn extract_ip(regex: &Regex, input: &str) -> Option<String> {
diff --git a/src/main.rs b/src/main.rs
index 40a19a2..5c2e2b0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -46,19 +46,22 @@ async fn main() {
             port,
             docker,
             position,
-        } => secure_port(port, docker, position),
-        Cli::UnsecurePort { port, docker } => unsecure_port(port, docker),
+        } => println!("{}", secure_port(port, docker, position).is_ok()),
+        Cli::UnsecurePort { port, docker } => println!("{}", unsecure_port(port, docker).is_ok()),
         Cli::AllowIpForPort {
             ip,
             port,
             docker,
             position,
-        } => allow_ip_for_port(&ip, port, docker, position),
+        } => println!("{}", allow_ip_for_port(&ip, port, docker, position).is_ok()),
         Cli::OnlyIpForPort { ip, port, docker } => {
-            allow_ip_for_port(&ip, port, docker, Some(1));
-            secure_port(port, docker, Some(2));
+            let allowed = allow_ip_for_port(&ip, port, docker, Some(1));
+            let secured = secure_port(port, docker, Some(2));
+            println!("{}", allowed.is_ok() && secured.is_ok());
+        }
+        Cli::RemoveAllowIpPort { ip, port, docker } => {
+            println!("{}", remove_allow_ip_for_port(&ip, port, docker).is_ok())
         }
-        Cli::RemoveAllowIpPort { ip, port, docker } => remove_allow_ip_for_port(&ip, port, docker),
         Cli::SaveIPTables { iptables_save } => {
             let path = if let Some(iptables_save) = iptables_save {
                 iptables_save
@@ -66,8 +69,7 @@ async fn main() {
                 PathBuf::from("/etc/iptables/rules.v4")
             };
 
-            iptables_save::save_iptables(&path);
-            println!("Saved IPTables to {}", path.display());
+            println!("{}", iptables_save::save_iptables(&path).is_ok())
         }
     }
 }