WebJul 30, 2010 · iptables can be configured and used in a variety of ways. The following sections will outline how to configure rules by port and IP, as well as how to block or allow … WebApr 24, 2024 · echo "Block external DNS" iptables -I OUTPUT -p udp --dport 53 -j REJECT iptables -I OUTPUT -p tcp --dport 53 -j REJECT echo "Block external DoT" iptables -I OUTPUT -p tcp --dport 853 -j REJECT ... need iptables rule to accept all incoming traffic. 3. iptables rules for nfs. 1. How to mount nfs share using autofs. 2.
How to fix iptables if i have blocked all incoming and …
WebJan 19, 2024 · Iptables setting seem to block all traffic. I am trying to set up iptables to allow SSH port only from outside and all traffic from inside. Also, I'm trying to set some … WebApr 29, 2024 · I am using Ubuntu Server (Amazon EC2) and connected with ssh using putty I was setting up iptables to block all incoming and outgoing connection except my ip … ordered choice
Blocking an IP With IPTables - Server Mania
WebNov 21, 2024 · According to the Ubuntu Wiki, UFW: is a frontend for iptables and is particularly well-suited for host-based firewalls. Upon installation, ufw is disabled, so I was pretty surprised that iptables was not disabled. In fact, it was blocking a lot of traffic. Now I enabled UFW and told it what kind of traffic I expect to flow in: ufw enable ufw ... WebJul 23, 2024 · This will allow to connect only by IP address. In case you want to enable DNS resolutions add these two rules: iptables -A OUTPUT -p tcp -m tcp --dport 53 -j ACCEPT iptables -A OUTPUT -p udp -m udp --dport 53 -j ACCEPT If you know your DNS servers IP addresses, then it makes sense to allow connections only to them. WebIn Iptables, Accept incoming UDP traffic to port 53 & reject everything in the port range for ephemeral ports. The highest limit should not be too high otherwise, your server will be unable to resolve external domains (for instance when you do a "ping google.com") from inside your server. ordered class