1/22/2023 0 Comments Hack router port 53 tcp![]() Everything works fine as i have 'ip dns server' globally enabled (as like a proxy for my internal net) But now the issue seems that my port 53 udp is open and everyone ( isp said this) could use this DNS for some attacks and so on. Also i have an acl for outgoing traffic on Dialer Interface 'ip access group 200 in ' where i allow access-list 200 permit udp any eq domain any also 'ip inspect Firewall out ' for tcp, udp, ftp ok. Thanks in advance: So what is exactly the issue? I have a router 2821 and firewall active. Hi guys, i have an issue with my config and probably not understand the whole thing right.
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