In computer networking, a port is an endpoint of communication. Physical as well as wireless connections are terminated at ports of hardware devices. At the software level, within an operating system, a port is a logical construct that identifies a specific process or a type of network service. Ports are identified for each protocol and address combination by 16-bit unsigned numbers, commonly known as the port number. Inbound packets are received, and the port number in the header is used to decide which application is to be passed the packets.

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  1. Z

    RT6600ax RT6600ax USB port only works at USB 2 speeds

    Has anyone gotten any storage attached to the RT6600ax that works at faster than USB 2 speeds? I thought it was supposed to have a USB 3.1 GEN 2 10gbps port? I can't seem to make it go faster than USB 2 speeds. So first I tried the drives plugged straight into the RT6600ax USB port: The drives...
  2. G

    FTP != port 21 not working

    Hi. DSM 6.2.4-25556 Update 5 I changed FTP port 21 to 30021. CP > File Services > FTP > Port number setting of FTP : 30021 Port forwarding on router is correctly setup (30021/tcp->30021/tcp) This works except when I use a FQDN to access the NAS from inside (!) the LAN. There is a reason why...
  3. philthedoc

    Port number automatically added to DDNS url

    I have a DDNS domain name through No-IP that's working with DSM, and I can use https with LE certificates no problem. I want to use reverse proxy to stop so many ports being forwarded on my Netgear Orbi router. I'd be happy to just forward 443 to the nas and have everything coming through there...
  4. EAZ1964

    security of the hyper backup vault port

    Just to be sure, I would like to know your opinion on the hyperbackup-vault port. As I do run a cross backup between two online NASses, They have been setup identically. I have opened and forwarded the HB-vault port on my routers to the same port on the NAS. The NAS firewall is active, and it...
  5. B

    port forwarding from the NAS through VPN to another server on OpenVPN client side

    Hi there, I've set up successfully DDNS + OpenVPN on my Synology DS215J / DSM 7 . Internet Access "on the go" is working well. Additionally I want to route specific ports through the NAS to a server, which is connected through the OpenVPN. Meaning: I want to call DDNS:5xxx, which should be...
  6. D

    DS218+ to DS220+ = lost one USB port, need help

    Moving from my DS218+ to DS220+ and noticed (surprise!) that the DS220+ has only one rear USB port. On my DS218+ I had an external USB drive and a UPS connected to the two USB ports on the back of the drive. Since there is only one port on the rear of the DS220+, will it work if I plug in the...
  7. R

    Restrict access of services (DownloadStation, Photos, HyperBackup etc.) to specific LAN port?

    Hello, I am looking for a way to limit internet-access of download station, photos or HyperBackup to one dedicated LAN-port/NIC. I could put this NIC in another subnet or VLAN and set in my gateway/firewall (not the firewall in the DS!) that from this network/VLAN only interface WAN1 (fast...
  8. EAZ1964

    Our friends from Q have been asked to stop port forwarding

  9. Telos

    Befuddled port forwarding... Off-NAS reverse proxy confusion

    I've been toying with nginx (docker) on a Raspberry Pi, but when I forward 443 to the RPi on the same network, things don't go as I hoped. Some background... Typically, 443 is forwarded to the NAS (443>443) and the NAS internal reverse proxy works as expected. But when I edited the router 443...
  10. Jan Janowski

    Just for S & G's.... Custom Port Probe

    I just found at Gibson Research "Shield's UP" area: the "Custom Port Probe" area.... So I stuffed in the 6 new default ports I changed on the 2600ac and LAN Based NAS's (718+ & 720+ at V6.2.3 Update 3) to... Stealth on these ports, as well as first 1024 ports! Self taught, so I'm learning as I go!
  11. D

    redirect port 80

    I've got a wiki running under docker - and I'd really like to not have to go to http://synologynas:{someweirdport} - i want to have essentially a portal which can be used by the whole family - and the synology admin screen is just one thing, that probably only I will ever go to. so - bottom...
  12. D

    DSM 7.0 Docker with Traefik reverse proxy under Synology DSM 7 // free port 80 and 443

    Hi everyone, to run docker with the reverse proxy Traefik v2 on a Synology NAS, I need to be able to use port 80 and 443 on the host system. DSM 7 uses its own reverse proxy, nginx, which tries to occupy the ports on its own. Under DSM 6.2 I could change the port 80 and 443 by using a boot...
  13. S

    DSM 6.2 SyncThing installation fails on DSM 6.2.4-25556 due to port 8384 being used

    Hi all, I had synthing happily running for a long time on the system installed by the Package Center. I decided to update it to the latest version. Installation failed and asked me to reinstall. When I try to install, port 8384 (ui port for syncthing) is said to be used. As fas as I can see...
  14. P

    DDNS and Port Number

    Having finally managed to set up my DS218play on an Eero mesh network - DDNS, SSL certificate, https, port forwarding and so forth- I find I am only able to successfully log in using the DDNS name if I use the https port number appended after the DDNS name. Is that expected or have I missed a...
  15. O

    Fixing port number in share links once and for all

    Okay SynoForum, I've been all over the internet searching for a fix to this. Problem: Every time I create a share link within Drive, Moments, Video Station... the link always contains a port number (https://example.com:5001/vs/sharing/abc123) Desired outcome: I want share links to not contain...
  16. L

    Need help solving a VPN port access issue

    Hi all. Let me start by saying I've spent almost two hours scouring this forum, google, synology, and other areas trying to fix this. I've read through some of the great tutorials and threads on OpenVPN and they've helped a ton, but I have a basic issue I can't figure out. So basically, I've...
  17. Jheroen

    multiple local nas running hyperbackup vault on port 6281 problem

    Hi all, i have multiple nas running hyperbackup vault. both nas use the same 6281 port, when i try to connect from outside synology nas to one of the nas i have (probably) a port forwarding problem. my synology ddns points to the same external IP for both nas running hyperbackup vault and both...
  18. ddmunhoz

    RT2600ac Port Security - Another security layer

    Hello Everyone! I hope you are all having a nice Christmas! So today I have something new, something that bugged me for a while: Keeping VPN ports open on my router when not needed. On my case, all of our devices "call back" home VPN when away. But doing so means leaving ports open 24/7 and...
  19. NAS Newbie

    If I change DSM default ports, does that disable the default port access for mobile apps?

    So I'm still poking around my network trying to understand all the ports and how they're interacting. Eventually I'll get some reverse proxies set up, but I want to make sure I clearly understand what is going on at the base level before moving on. I had DSM set on the default 5000/5001 ports...
  20. R

    Solved Transmission 3.00-17 port issues

    Has anyone upgraded to the SynoCommunity version 3.00 of Transmission and all of a sudden, all ports that were open on the previous release are now closed? This happened on my DS918+ and well as a new install for the DS720+ using the same ports (with port forwarding from my router) that have...