안녕하세요.
연구실 홈페이지가 학내에서는 접속이 되는데요 학외 접속이 갑자기 안되는데요.
어디서 문제가 있는건지 모르겠어서요 ㅠ
iptables 문제인가 싶어서 아래 출력 결과도 복사해오긴 했어요.
다른 부분을 짚어볼 게 있을까요?
그리고 접속이 된다 하여도 굉장히 느린데, 이 부분은 어떤 것을 수정해야 할까요?
외주를 맡겨볼 생각도 있어요!
iptables -nL 출력 결과는 아래와 같아요.
감사합니다!!
_________________________________________
Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80
ACCEPT tcp -- 0.0.0.0/0 147.46.123.213 tcp dpt:80
ACCEPT tcp -- 0.0.0.0/0 147.46.123.213 tcp dpt:22
Chain FORWARD (policy DROP)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain ufw-after-forward (0 references)
target prot opt source destination
Chain ufw-after-input (0 references)
target prot opt source destination
ufw-skip-to-policy-input udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:137
ufw-skip-to-policy-input udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:138
ufw-skip-to-policy-input tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:139
ufw-skip-to-policy-input tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:445
ufw-skip-to-policy-input udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:67
ufw-skip-to-policy-input udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:68
ufw-skip-to-policy-input all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type BROADCAST
Chain ufw-after-logging-forward (0 references)
target prot opt source destination
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix "[UFW BLOCK] "
Chain ufw-after-logging-input (0 references)
target prot opt source destination
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix "[UFW BLOCK] "
Chain ufw-after-logging-output (0 references)
target prot opt source destination
Chain ufw-after-output (0 references)
target prot opt source destination
Chain ufw-before-forward (0 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 3
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 11
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 12
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 8
ufw-user-forward all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-before-input (0 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
ufw-logging-deny all -- 0.0.0.0/0 0.0.0.0/0 ctstate INVALID
DROP all -- 0.0.0.0/0 0.0.0.0/0 ctstate INVALID
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 3
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 11
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 12
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmptype 8
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spt:67 dpt:68
ufw-not-local all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT udp -- 0.0.0.0/0 224.0.0.251 udp dpt:5353
ACCEPT udp -- 0.0.0.0/0 239.255.255.250 udp dpt:1900
ufw-user-input all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-before-logging-forward (0 references)
target prot opt source destination
Chain ufw-before-logging-input (0 references)
target prot opt source destination
Chain ufw-before-logging-output (0 references)
target prot opt source destination
Chain ufw-before-output (0 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
ufw-user-output all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-logging-allow (0 references)
target prot opt source destination
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix "[UFW ALLOW] "
Chain ufw-logging-deny (2 references)
target prot opt source destination
RETURN all -- 0.0.0.0/0 0.0.0.0/0 ctstate INVALID limit: avg 3/min burst 10
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix "[UFW BLOCK] "
Chain ufw-not-local (1 references)
target prot opt source destination
RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL
RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type MULTICAST
RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type BROADCAST
ufw-logging-deny all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10
DROP all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-reject-forward (0 references)
target prot opt source destination
Chain ufw-reject-input (0 references)
target prot opt source destination
Chain ufw-reject-output (0 references)
target prot opt source destination
Chain ufw-skip-to-policy-forward (0 references)
target prot opt source destination
DROP all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-skip-to-policy-input (7 references)
target prot opt source destination
DROP all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-skip-to-policy-output (0 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-track-forward (0 references)
target prot opt source destination
Chain ufw-track-input (0 references)
target prot opt source destination
Chain ufw-track-output (0 references)
target prot opt source destination
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW
Chain ufw-user-forward (1 references)
target prot opt source destination
Chain ufw-user-input (1 references)
target prot opt source destination
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:22
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:80
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:8080
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:8080
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80
Chain ufw-user-limit (0 references)
target prot opt source destination
LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 5 LOG flags 0 level 4 prefix "[UFW LIMIT BLOCK] "
REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable
Chain ufw-user-limit-accept (0 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
Chain ufw-user-logging-forward (0 references)
target prot opt source destination
Chain ufw-user-logging-input (0 references)
target prot opt source destination
Chain ufw-user-logging-output (0 references)
target prot opt source destination
Chain ufw-user-output (1 references)
target prot opt source destination
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감사합니다!
학내에서 접속이 된다면 서버 방화벽 문제는 아닙니다. 아마 상위 장비에서 외부 트래픽을 막고 있는 것으로 추정됩니다. 학교 네트워크 담당자에게 문의하시면 됩니다.