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Free ports 80 and 443 on Synology NAS
#! /bin/bash
# NEWLY ADDED BACKUP FUNCTIONALITY IS NOT FULLY TESTED YET, USE WITH CARE, ESPECIALLY DELETION
# Developed for DSM 6 - 7.0.1. Not tested on other versions.
# Steps to install
# Save this script in one of your shares
# Edit it according to your requirements
# Backup /usr/syno/share/nginx/ as follows:
# # cd /usr/syno/share/
# # tar cvf ~/nginx.tar nginx
# Run this script as root
# Reboot and ensure everything is still working
# If not, restore the backup and post a comment on this script's gist page
# If it did, schedule it to run as root at boot
# through Control Panel -> Task Scheduler
HTTP_PORT=81
HTTPS_PORT=444
BACKUP_FILES=true # change to false to disable backups
BACKUP_DIR=/volume1/apps/free_ports/backup
DELETE_OLD_BACKUPS=false # change to true to automatically delete old backups.
KEEP_BACKUP_DAYS=30
DATE=$(date +%Y-%m-%d-%H-%M-%S)
CURRENT_BACKUP_DIR="$BACKUP_DIR/$DATE"
if [ "$BACKUP_FILES" == "true" ]; then
mkdir -p "$CURRENT_BACKUP_DIR"
cp /usr/syno/share/nginx/*.mustache "$CURRENT_BACKUP_DIR"
fi
if [ "$DELETE_OLD_BACKUPS" == "true" ]; then
find "$BACKUP_DIR/" -type d -mtime +$KEEP_BACKUP_DAYS -exec rm -r {} \;
fi
sed -i "s/^\([ \t]\+listen[ \t]\+[]:[]*\)80\([^0-9]\)/\1$HTTP_PORT\2/" /usr/syno/share/nginx/*.mustache
sed -i "s/^\([ \t]\+listen[ \t]\+[]:[]*\)443\([^0-9]\)/\1$HTTPS_PORT\2/" /usr/syno/share/nginx/*.mustache
if which synoservicecfg; then
synoservicecfg --restart nginx
else
synosystemctl restart nginx
fi
echo "Made these changes:"
diff /usr/syno/share/nginx/ $CURRENT_BACKUP_DIR 2>&1 | tee $CURRENT_BACKUP_DIR/changes.log
@alexdelprete
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alexdelprete commented Dec 15, 2021

Thanks.

Had to move the DATE line before the CURRENT_BACKUP_DIR to make the backup versioning work as expected.

I also added this line at the end so no reboot is necessary:

synoservicecfg --restart nginx

@TheMartianObserver
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TheMartianObserver commented Dec 20, 2021

@alexdelprete Running DSM 7.0.1 and can't find the synoservicecfg command. Is there an equivalent that I'm missing?

@alexdelprete
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alexdelprete commented Dec 21, 2021

Did you google for it? :)

should be: systemctl restart nginx but try it first, since I can't test it, I have an old DS1812+.

@hjbotha
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Author

hjbotha commented Dec 27, 2021

Thanks for the info all.

  • Fixed the DATE and BACKUP_DIR var order (oof)
  • Added some logic to use different commands to restart nginx depending on what's available.

@agizmo
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agizmo commented Jan 2, 2022

For some reason my DS220+ running DSM 7.0.1 doesn't like the way the date is being generated. Every time I try to save I get an error saying "Connection failed. Pleased check your network settings." I've had to add single quotes around the date creation like this:
Before: DATE=$(date +%Y-%m-%d-%H-%M-%S)
After: DATE=$(date '+%Y-%m-%d-%H-%M-%S')

I don't know if this affects other DSM 7 users or if making the change would hurt DSM 6 users.

@sebastianseidel
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sebastianseidel commented Feb 21, 2022

Unfortunately not working on my DS1817+ (current version: DSM 7.0.1-42218 Update 2)
Restarting system didn't help. Script was executed new ports have been take additionally but 80 + 443 still occupied.
sudo netstat -tulpn | grep LISTEN | grep ':80 \|:443 '
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 723/nginx: worker p
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 723/nginx: worker p
tcp6 0 0 :::443 :::* LISTEN 723/nginx: worker p
tcp6 0 0 :::80 :::* LISTEN 723/nginx: worker p
Update: WebStation is installed.

Fixed: Had some "Web service portals" running inside "WebStation" that seem to block the ports from getting free.

@waschinski
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waschinski commented Feb 22, 2022

@sebastianseidel did you use the modified script provided by @flo-mic? I think his fix was taking care of your issue.

@kevindd992002
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kevindd992002 commented Feb 23, 2022

This worked for me! Thanks.

@Synaesthesia0
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Synaesthesia0 commented Feb 27, 2022

I was able to free up 80, but 443 was still being grabbed by nginx. Took me a long time to figure out the solution, simply had to uncheck the setting:
Control Panel -> Login Portal -> Uncheck/Disable "Automatically redirect HTTP connection to HTTPS for DSM desktop."

Hope this helps someone. And thanks for the original script!

@kevindd992002
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kevindd992002 commented Feb 27, 2022

@Synaesthesia0 So I applied this same fix a few days ago and I did not have to disable redirection. It just worked.

image

My SWAG listens at port 443 now with that setting enabled. Not sure why it's a different case with yours.

@TeDz002
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TeDz002 commented Feb 28, 2022

@Synaesthesia0 I had the same issue, fixed by removing a record in the DSM reverse proxy - forgot it was there lol.

@thatisfree
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thatisfree commented Mar 3, 2022

it's python version for DSM7

import os
import shutil
import time

print("Start OK")

HTTP_PORT=81
HTTPS_PORT=444

NGINX = "/usr/syno/share/nginx"
MUSTACHE = ["DSM.mustache","server.mustache","WWWService.mustache"]
BACKUP_FILES = True # change to false to disable backups
BACKUP_DIR = "/volume1/sw/nginx/backup"
DELETE_OLD_BACKUPS = True # change to true to automatically delete old backups.
KEEP_BACKUP_DAYS = 30
DATE = time.strftime("%Y-%m-%d_%H-%M-%S")
CURRENT_BACKUP_DIR = os.path.join(BACKUP_DIR,DATE)

for file in MUSTACHE:
    if BACKUP_FILES:
        os.makedirs(CURRENT_BACKUP_DIR, exist_ok=True)
        shutil.copy(os.path.join(NGINX,file),CURRENT_BACKUP_DIR)
        print("Backup Done")
    data = open(os.path.join(NGINX,file), 'rt').read().replace('listen 80', 'listen 81').replace('listen [::]:80','listen [::]:81').replace('listen 443','listen 444').replace('listen [::]:443', 'listen [::]:444')
    open(os.path.join(NGINX,file), 'wt').write(data)
print("Mod Done")

if not DELETE_OLD_BACKUPS:
    for f in os.listdir(BACKUP_DIR):
        f = os.path.join(BACKUP_DIR, f)
        if os.stat(f).st_mtime < time.time() - KEEP_BACKUP_DAYS * 86400:
            if os.path.isdir(f):
                shutil.rmtree(f)

#
# Perform nginx reload if running on DSM 7.X
if open('/etc.defaults/VERSION','r').read().find('majorversion="7"') != -1:
    print("Restart service")
    os.system('systemctl restart nginx')
print("All Done")

It's work for me after reboot DSM

@JVT038
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JVT038 commented Mar 11, 2022

@thatisfree I changed your code a little bit, by adding 4 variables regarding the ports, so other users can change the values easier.
Besides that, thanks for the code! It worked for me DS918+ DSM 7.0.1-42218 Update 3

import os
import shutil
import time

print("Start OK")

HTTP_PORT=81
HTTPS_PORT=444

NGINX = "/usr/syno/share/nginx"
MUSTACHE = ["DSM.mustache","server.mustache","WWWService.mustache"]
BACKUP_FILES = True # change to false to disable backups
BACKUP_DIR = "/volume1/docker/nginx/backup"
DELETE_OLD_BACKUPS = True # change to true to automatically delete old backups.
KEEP_BACKUP_DAYS = 30
DATE = time.strftime("%Y-%m-%d_%H-%M-%S")
CURRENT_BACKUP_DIR = os.path.join(BACKUP_DIR,DATE)
NEW_HTTP_PORT=79
OLD_HTTP_PORT=80
NEW_HTTPS_PORT=444
OLD_HTTPS_PORT=443

for file in MUSTACHE:
    if BACKUP_FILES:
        os.makedirs(CURRENT_BACKUP_DIR, exist_ok=True)
        shutil.copy(os.path.join(NGINX,file),CURRENT_BACKUP_DIR)
        print("Backup Done")
    data = open(os.path.join(NGINX,file), 'rt').read().replace('listen 80', 'listen 81').replace('listen [::]:80',f'listen [::]:{NEW_HTTP_PORT}').replace('listen 443',f'listen {NEW_HTTPS_PORT}').replace('listen [::]:443', F'listen [::]:{NEW_HTTPS_PORT}')
    open(os.path.join(NGINX,file), 'wt').write(data)
print("Mod Done")

if not DELETE_OLD_BACKUPS:
    for f in os.listdir(BACKUP_DIR):
        f = os.path.join(BACKUP_DIR, f)
        if os.stat(f).st_mtime < time.time() - KEEP_BACKUP_DAYS * 86400:
            if os.path.isdir(f):
                shutil.rmtree(f)

#
# Perform nginx reload if running on DSM 7.X
if open('/etc.defaults/VERSION','r').read().find('majorversion="7"') != -1:
    print("Restart service")
    os.system('systemctl restart nginx')
print("All Done")

@kevindd992002
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kevindd992002 commented Mar 12, 2022

@thatisfree what do you mean by "it's python version" for DSM7? I used the original code on my DS1817+ DSM7 and it seems to be working fine so I want to understand what is wrong with it and what improvements you made?

@JVT038 since you added new variables, you should remove the old ones as they're no longer being used in the code:

HTTP_PORT=81
HTTPS_PORT=444

@JVT038
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JVT038 commented Mar 12, 2022

Oops yeah, forgot about those 2 vars, my bad

@cocoonkid
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cocoonkid commented Apr 1, 2022

@thatisfree thanks for the original work.
@JVT038 Thank you so much for producing a python version. You saved me the exercise :)

Works like a charm with python3.8 on my Synology DS916+.

Extremely happy I just needed that today and here it is done just 3 weeks ago! You ROCK!

@inogueira82
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inogueira82 commented Apr 18, 2022

Hi all!

I've had this script runningin my ds918+ with dsm7 and the drive where it was stored (with the backups) crashed.

Now i Want/need to access DSM at ports 80/433 but they don't work anymore. I can access by ports 5000 and 5011..

Is there anything I can do?

Thank you

@TeDz002
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TeDz002 commented Apr 18, 2022

Hi all!

I've had this script runningin my ds918+ with dsm7 and the drive where it was stored (with the backups) crashed.

Now i Want/need to access DSM at ports 80/433 but they don't work anymore. I can access by ports 5000 and 5011..

Is there anything I can do?

Thank you

You could change the values of the port variables in the script so it changes them to 80/443.

@danielstorch
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danielstorch commented May 2, 2022

The script did not work for me. After executing it there where 3 files that changed: server.mustache, WWWService.mustache, DSM.mustache.
The ports 80 and 443 are still not available. They still redirect to the DSM login page running on port 5000. Reboot didn't work either.

Here my setup:
DS920+
DSM 7.0.1-42218 Update 3

Also why do i need to add the script as a scheduled task which runs at boot-up? After restarting my synology diskstaion, the changes in those files where still there.

@bruvv
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bruvv commented May 2, 2022

@danielstorch because after an update of DSM those changes will be reverted. Can you try and run this command: sudo systemctl restart nginx this will restart the whole nginx service. Reload did not work for me on DSM 7.1 maybe that also changed on Updated 3 of DSM 7.0

@danielstorch
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danielstorch commented May 2, 2022

The redirect thing doesn't seem to be true. With firefox or safari the port 80 gives me connection failed. So the Ports seem to be free. But i still can't create a docker container using the ports?
Im trying to create a container in bridge which uses port 80 and 443.

@gertvanantwerpentno
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gertvanantwerpentno commented May 3, 2022

The most elegant solution I can imagine is the following. There is no need to change configuration files of the already running nginx server. Use the following commands to redirect incoming traffic on ports 80 and 443:

iptables -t nat -A PREROUTING -i eth+ -p tcp --dport 80 -j REDIRECT --to-port 8080
iptables -t nat -A PREROUTING -i eth+ -p tcp --dport 443 -j REDIRECT --to-port 8443

When this is done, you can put your your new webserver on ports 8080 and 8443. The original webserver is still running on 80/443 but the traffic from outside will never reach it anymore.

@danielstorch
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danielstorch commented May 4, 2022

For anyone who might have the same problem. After running the script the ports where free. But i couldn't create the container with the Synology UI or Portainer. I had to create the nginx container on ports 80 and 443 with Docker cli. Now it works fine.

@ZaxLofful
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ZaxLofful commented May 16, 2022

I saw, elsewhere, that someone was running this @restart.....Is that good? Should it be run more or less often possibly?

On a related note:

The most elegant solution I can imagine is the following. There is no need to change configuration files of the already running nginx server. Use the following commands to redirect incoming traffic on ports 80 and 443:

iptables -t nat -A PREROUTING -i eth+ -p tcp --dport 80 -j REDIRECT --to-port 8080 iptables -t nat -A PREROUTING -i eth+ -p tcp --dport 443 -j REDIRECT --to-port 8443

When this is done, you can put your your new webserver on ports 8080 and 8443. The original webserver is still running on 80/443 but the traffic from outside will never reach it anymore.

While this does work, for most....I am trying to free the ports up, so that I can have another application take them over. Your solutions would actually make things much worse. (for those out there trying to do the same; e.g. Traefik)

@reclaimer5146
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reclaimer5146 commented Jun 30, 2022

@thatisfree I changed your code a little bit, by adding 4 variables regarding the ports, so other users can change the values easier. Besides that, thanks for the code! It worked for me DS918+ DSM 7.0.1-42218 Update 3

import os
import shutil
import time

print("Start OK")

HTTP_PORT=81
HTTPS_PORT=444

NGINX = "/usr/syno/share/nginx"
MUSTACHE = ["DSM.mustache","server.mustache","WWWService.mustache"]
BACKUP_FILES = True # change to false to disable backups
BACKUP_DIR = "/volume1/docker/nginx/backup"
DELETE_OLD_BACKUPS = True # change to true to automatically delete old backups.
KEEP_BACKUP_DAYS = 30
DATE = time.strftime("%Y-%m-%d_%H-%M-%S")
CURRENT_BACKUP_DIR = os.path.join(BACKUP_DIR,DATE)
NEW_HTTP_PORT=79
OLD_HTTP_PORT=80
NEW_HTTPS_PORT=444
OLD_HTTPS_PORT=443

for file in MUSTACHE:
    if BACKUP_FILES:
        os.makedirs(CURRENT_BACKUP_DIR, exist_ok=True)
        shutil.copy(os.path.join(NGINX,file),CURRENT_BACKUP_DIR)
        print("Backup Done")
    data = open(os.path.join(NGINX,file), 'rt').read().replace('listen 80', 'listen 81').replace('listen [::]:80',f'listen [::]:{NEW_HTTP_PORT}').replace('listen 443',f'listen {NEW_HTTPS_PORT}').replace('listen [::]:443', F'listen [::]:{NEW_HTTPS_PORT}')
    open(os.path.join(NGINX,file), 'wt').write(data)
print("Mod Done")

if not DELETE_OLD_BACKUPS:
    for f in os.listdir(BACKUP_DIR):
        f = os.path.join(BACKUP_DIR, f)
        if os.stat(f).st_mtime < time.time() - KEEP_BACKUP_DAYS * 86400:
            if os.path.isdir(f):
                shutil.rmtree(f)

#
# Perform nginx reload if running on DSM 7.X
if open('/etc.defaults/VERSION','r').read().find('majorversion="7"') != -1:
    print("Restart service")
    os.system('systemctl restart nginx')
print("All Done")

This had a hard coded value for replacing 80 with 81 which was causing the files to have 2 different ports in the configuration, port 81 and the NEW_HTTP_PORT value. It was reading "replace('listen 80', 'listen 81')" when it should have read "replace('listen 80',f'listen {NEW_HTTP_PORT}')". You can see it in the quote. Also removed the old HTTP_PORT and HTTPS_PORT values.

Here is the updated python script

import os
import shutil
import time

print("Start OK")

NGINX = "/usr/syno/share/nginx"
MUSTACHE = ["DSM.mustache","server.mustache","WWWService.mustache"]
BACKUP_FILES = True # change to false to disable backups
BACKUP_DIR = "/volume1/docker/nginx/backup"
DELETE_OLD_BACKUPS = True # change to true to automatically delete old backups.
KEEP_BACKUP_DAYS = 30
DATE = time.strftime("%Y-%m-%d_%H-%M-%S")
CURRENT_BACKUP_DIR = os.path.join(BACKUP_DIR,DATE)
NEW_HTTP_PORT=79
OLD_HTTP_PORT=80
NEW_HTTPS_PORT=444
OLD_HTTPS_PORT=443

for file in MUSTACHE:
    if BACKUP_FILES:
        os.makedirs(CURRENT_BACKUP_DIR, exist_ok=True)
        shutil.copy(os.path.join(NGINX,file),CURRENT_BACKUP_DIR)
        print("Backup Done")
    data = open(os.path.join(NGINX,file), 'rt').read().replace('listen 80',f'listen {NEW_HTTP_PORT}').replace('listen [::]:80',f'listen [::]:{NEW_HTTP_PORT}').replace('listen 443',f'listen {NEW_HTTPS_PORT}').replace('listen [::]:443', F'listen [::]:{NEW_HTTPS_PORT}')
    open(os.path.join(NGINX,file), 'wt').write(data)
print("Mod Done")

if not DELETE_OLD_BACKUPS:
    for f in os.listdir(BACKUP_DIR):
        f = os.path.join(BACKUP_DIR, f)
        if os.stat(f).st_mtime < time.time() - KEEP_BACKUP_DAYS * 86400:
            if os.path.isdir(f):
                shutil.rmtree(f)

#
# Perform nginx reload if running on DSM 7.X
if open('/etc.defaults/VERSION','r').read().find('majorversion="7"') != -1:
    print("Restart service")
    os.system('systemctl restart nginx')
print("All Done")

@stevenhaddox
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stevenhaddox commented Jul 1, 2022

Got bit by the generic system event "Some web pages cannot function properly because of web server error. Please contact Tech support..." with this script running on boot after I updated to DSM 7.1 update 2 this afternoon.

I've tweaked the original script provided by the OP (with a few suggested changes in the comments since it was posted) to enable easily resetting the ports for Nginx back to the defaults expected in addition to supporting changing the defaults to custom ports (as is the default behavior). This allowed me to reset the ports back to defaults, update my packages that were failing within Package Center, and then re-enable my custom ports and free up ports 80 and 443 for Traefik as usual.

In case anyone is interested in it, here's my modified version:

#! /bin/bash
# SRC: https://gist.github.com/hjbotha/f64ef2e0cd1e8ba5ec526dcd6e937dd7

# NEWLY ADDED BACKUP FUNCTIONALITY IS NOT FULLY TESTED YET, USE WITH CARE, ESPECIALLY DELETION
# Developed for DSM 6 - 7.0.1. Not tested on other versions.
# Steps to install
# Save this script in one of your shares
# Edit it according to your requirements
# Backup /usr/syno/share/nginx/ as follows:
# # cd /usr/syno/share/
# # tar cvfz $DOCKER_USER_DIR/.bak/nginx.bak.tar.gz nginx
# Run this script as root
# Reboot and ensure everything is still working
# If not, restore the backup and post a comment on this script's gist page
# If it did, schedule it to run as root at boot
#   through Control Panel -> Task Scheduler

DEFAULT_HTTP_PORT=80
DEFAULT_HTTPS_PORT=443

CUSTOM_HTTP_PORT=5080  # DO NOT USE 5000 as it creates a duplicate server config block in Nginx and pukes
CUSTOM_HTTPS_PORT=5443 # DO NOT USE 5001 as it creates a duplicate server config block in Nginx and pukes

if [ "$RESET_TO_DEFAULTS" == "true" ];  then
  # Reverse the port replacement logic in the mustache files to "reset"
  HTTP_PORT_TO_REPLACE=$CUSTOM_HTTP_PORT
  HTTPS_PORT_TO_REPLACE=$CUSTOM_HTTPS_PORT
  HTTP_NEW_PORT=$DEFAULT_HTTP_PORT
  HTTPS_NEW_PORT=$DEFAULT_HTTPS_PORT
  echo "Resetting ports to default ports..."
else
  # Default behavior is to update Nginx for DSM to use ports 5000 & 50001
  HTTP_PORT_TO_REPLACE=$DEFAULT_HTTP_PORT
  HTTPS_PORT_TO_REPLACE=$DEFAULT_HTTPS_PORT
  HTTP_NEW_PORT=$CUSTOM_HTTP_PORT
  HTTPS_NEW_PORT=$CUSTOM_HTTPS_PORT
  echo "Overriding default ports..."
fi

echo "Replacing port $HTTP_PORT_TO_REPLACE with $HTTP_NEW_PORT"
echo "Replacing port $HTTPS_PORT_TO_REPLACE with $HTTPS_NEW_PORT"
echo " "


if [ "$BACKUP_FILES" == "false" ]; then
  BACKUP_FILES=false
else
  # Default to backing up all modified files
  BACKUP_FILES=true
fi

BACKUP_DIR=${HOME}/.bak/free_ports/
DELETE_OLD_BACKUPS=false # change to true to automatically delete old backups.
KEEP_BACKUP_DAYS=365

DATE=$(date +%Y-%m-%d-%H-%M-%S)
CURRENT_BACKUP_DIR="$BACKUP_DIR/$DATE"

if [ "$BACKUP_FILES" == "true" ]; then
  mkdir -p "$CURRENT_BACKUP_DIR"
  cp -r /usr/syno/share/nginx/ "$CURRENT_BACKUP_DIR"
fi

if [ "$DELETE_OLD_BACKUPS" == "true" ]; then
  find "$BACKUP_DIR/" -type d -mtime +$KEEP_BACKUP_DAYS -exec rm -r {} \;
fi

# Replace ports as desired in mustache config files
sed -i "s/^\([ \t]\+listen[ \t]\+[]:[]*\)$HTTP_PORT_TO_REPLACE\([^0-9]\)/\1$HTTP_NEW_PORT\2/" /usr/syno/share/nginx/*.mustache
sed -i "s/^\([ \t]\+listen[ \t]\+[]:[]*\)$HTTPS_PORT_TO_REPLACE\([^0-9]\)/\1$HTTPS_NEW_PORT\2/" /usr/syno/share/nginx/*.mustache

echo "Made these changes:"
diff /usr/syno/share/nginx/ $CURRENT_BACKUP_DIR 2>&1 | tee $CURRENT_BACKUP_DIR/changes.log
echo " "

echo "[ ] Updating Nginx..."
if grep -q 'majorversion="7"' "/etc.defaults/VERSION"; then
  nginx -s reload
  echo "[✔] Nginx reloaded!"
else
  if which synoservicecfg; then
    synoservicecfg --restart nginx
  else
    synosystemctl restart nginx
  fi
  echo "[✔] Nginx restarted!"
fi

exit 0

Then you would simply invoke this with sudo as usual, but pass in an ENV variable to restore the configs to their default ports:
sudo RESET_TO_DEFAULTS=true ./free_ports.sh

@firstrecall
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firstrecall commented Aug 1, 2022

Script worked good on DSM 7.0.3
Thank you

@irishj
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irishj commented Aug 18, 2022

This is exactly what I need to free up port 80/443 on my Synology box.

Thanks to all who contributed !!

@irishj
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irishj commented Sep 10, 2022

Anyone tried this on DSM 7.1-42661 Update 4 ?

Updated recently and port 443 still seems to be held by nginx

sudo netstat -tulpn | grep LISTEN | grep ':80 \|:443 '
tcp        0      0 0.0.0.0:443             0.0.0.0:*               LISTEN      15598/nginx: master 
tcp6       0      0 :::443                  :::*                    LISTEN      15598/nginx: master

@irishj
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irishj commented Sep 11, 2022

Nevermind me, I had a rogue reverse proxy entry in the DSM control panel. Removed and all good now.

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