What do these "ALG" setting on my router mean, and what is "ALG"?
12 "ALG" here stands for "Application-layer Gateway". That is, firewall modules which cope with some peculiarities of those protocols. On a stateful firewall, the "state" is usually tied to just addresses and …
ipsec - Can someone help me understand ALG and VPN settings on my ...
I'm looking at the settings in my TP-LINK WDR4300 router and noticed settings for VPN passthrough and ALG. Every single option is enabled but I am hoping someone can help me understand these …
For better security, should I enable or disable these ALG firewall ...
May 18, 2020 · Those ALG rules once enabled create exceptions on the firewall to allow the related network services (example: pptp vpn, or sip telephony), if the service is not used keep them …
Why SIP-ALG in routers and modems? - Super User
Without SIP-ALG you may have one-way audio on VoIP conversations (see below). Unfortunately the SIP-ALG in many routers is poorly implemented and causes more problems than it solves. If you …
Port 21 is open but I can't connect to FTP server - Super User
Sep 1, 2015 · It's rare to find a NAT gateway with FTP ALG code to allow a server behind the NAT to be reached via Passive FTP, but it's somewhat less rare to find a NAT gateway with ALG code to allow …
wireshark - SIP ALG detector - Super User
I am trying to create a detector for SIP ALG. I really just need to know what the BEST method of testing this is so I can write a program to test whether SIP ALG is enabled or disabled. Thanks
Upgrading OpenVPN 2.4.7 to 2.5.6 results in frequent disconnects
Apr 1, 2022 · When using OpenVPN 2.4.7 on my server (Ubuntu Server 20.04) and connecting from a 2.5.6 client (also Ubuntu 20.04), I can connect with no issue. However, when I try to use OpenVPN …
wireless router - How to access Nokia FastMile 5G14-B ... - Super User
May 23, 2025 · The IP address must be the same you chose on phase 16. From the Devices menu you can check that the internal router is recognized with the static IP. Go to the Security / ALG & DMZ / …
425 Unable to build data connection FileZilla, using windows 11 FTP ...
May 9, 2023 · If your router has an "ALG" ("Application Layer Gateway") section or a "L7 protocol" section, it might be possible to change which ports are handled as "FTP ports". For passive mode, …
centos - Cannot connect to server which provides ... - Super User
Aug 15, 2024 · No, I have web app (ASP.NET) deployed on CentOS, which must connect to SqlServer on different host. SSH works fine.