同樣的阿里云環(huán)境的兩臺服務器
A：

[root@izwz93tphuqvc71uly4gr2F ~]# wget https://jingyan.baidu.com/article/7908e85c725159af481ad2f7.html
--2018-03-13 16:18:43--  https://jingyan.baidu.com/article/7908e85c725159af481ad2f7.html
Resolving jingyan.baidu.com (jingyan.baidu.com)... 220.181.164.104, 106.39.162.97
Connecting to jingyan.baidu.com (jingyan.baidu.com)|220.181.164.104|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: ‘7908e85c725159af481ad2f7.html’
    [ <=>                                                         ] 109,472      680KB/s   in 0.2s

2018-03-13 16:18:43 (680 KB/s) - ‘7908e85c725159af481ad2f7.html’ saved [109472]

B：

[root@AY140220152843902sdg46ZsG ~]# wget https://jingyan.baidu.com/article/7908e85c725159af481ad2f7.html
--2018-03-13 16:24:01--  https://jingyan.baidu.com/article/7908e85c725159af481ad2f7.html
Resolving jingyan.baidu.com... 220.181.164.104, 106.39.162.97
Connecting to jingyan.baidu.com|220.181.164.104|:443... failed: Connection timed out.
Connecting to jingyan.baidu.com|106.39.162.97|:443... failed: Connection timed out.
Retrying.

--2018-03-13 16:26:08--  (try: 2)  https://jingyan.baidu.com/article/7908e85c725159af481ad2f7.html
Connecting to jingyan.baidu.com|220.181.164.104|:443... failed: Connection timed out.
Connecting to jingyan.baidu.com|106.39.162.97|:443... failed: Connection timed out.
Retrying.

--2018-03-13 16:28:16--  (try: 3)  https://jingyan.baidu.com/article/7908e85c725159af481ad2f7.html
Connecting to jingyan.baidu.com|220.181.164.104|:443... failed: Connection timed out.
Connecting to jingyan.baidu.com|106.39.162.97|:443...

簡而言之就是，凡需要請求443，就會出現(xiàn)問題。

請求例如wget http://www.acfun.cn是順利執(zhí)行的。

于是我查了一下B的openssl

[root@AY140220152843902sdg46ZsG ~]# openssl version -a
OpenSSL 1.0.1e-fips 11 Feb 2013
built on: Wed Mar 22 21:43:28 UTC 2017

雖然版本很久，但是根據(jù)built on來看，是有更新的吧。

順便附上iptables，我唯一能想到可能關聯(lián)的。

[root@AY140220152843902d46Z ~]# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     icmp --  anywhere             anywhere            state NEW,ESTABLISHED
ACCEPT     all  --  anywhere             anywhere            state NEW,RELATED,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp spt:domain state ESTABLISHED
ACCEPT     udp  --  anywhere             anywhere            udp spt:domain state ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp spt:webcache state ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp spt:http state ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp spt:ssh state ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp spt:urd state ESTABLISHED
ACCEPT     udp  --  anywhere             anywhere            udp spt:ntp state ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh state NEW,RELATED,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp spt:mysql state ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:http state NEW,RELATED,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:https state 
REJECT     all  --  anywhere             anywhere            reject-with icmp-port-unreachable

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     udp  --  anywhere             anywhere            udp dpt:domain state NEW,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:domain state NEW,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:webcache state NEW,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:http state NEW,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh state NEW,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:mysql state NEW,ESTABLISHED
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:urd state NEW,ESTABLISHED
ACCEPT     udp  --  anywhere             anywhere            udp dpt:ntp state NEW,ESTABLISHED