WebJan 9, 2024 · I am trying to block port 433 UDP traffic, As Facebook and IG use this to send video down and at the moment this causes issues with Starlink, with video … WebNov 9, 2024 · My VM (Ubuntu) works and got internet (I can ping 8.8.8.8) but it cannot resolve DNS (trying nslookup www.google.com or dig www.google.com). Only the port 53 is blocked. I thought it was the "security group" fault but it doesn't change anything when I make a rule. Inbound & outbound : port 53 -> to 53 protocol any.
flood of outbound dns quiries on domain controller - IT Security
WebSep 13, 2024 · The command lsof -i TCP:53 will give the active sessions on port 53. The command netstat -vanp tcp grep 53 will give information on the processes that are … WebOct 21, 2024 · 53 – Domain Name System (DNS) 80 – Hypertext Transfer Protocol (HTTP) 110 – Post Office Protocol (POP3) 143 – Internet Message Access Protocol (IMAP) 443 – HTTP Secure (HTTPS) Since there are so … fsa right to reply
Configure firewall for AD domain and trusts - Windows Server
WebPort 68/UDP: Port 68 is used to obtain dynamic IP address information from a dynamic host configuration protocol (DHCP) server. Port 68 may be blocked to eliminate the risk of exposure to a rogue DHCP server. Port 123/UDP: Network Time Protocol (NTP) is used to accurately synchronize computer time of day to a reference time server. Some aspects ... WebMay 25, 2014 · My previous router, a Draytek model, had a rule in its firewall that blocked local port 137-139 connecting to remote port 53. I have heard port 53 mentioned a few times in various threads. Should I have a rule like this in my new routers firewall and if so, what should I put in the various boxes? WebThings get a bit more complex with the VPN, blocking port 53 might be irreverent depending on what the router is able to see. Generally speaking a VPN can be used to … giftly coupon code