On the sharing of two LAN files connected across SDH private line

R1 cisco7200, R2 Huawei Ar28-11

After inspection, the subsidiary line router R2 connected with the port of the subsidiary intranet set the firewall rules firewall:

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Interface ethernet0/0

Description Juyuwang

IP address 10.xxx.xxx.xxx 255.255.0.0

Firewall Packet-filter 3911 Inbound

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The rule matching is inbound, that is, restricting the data flow to the local area network where the P2 is located, and the ACL access control list of the modification rules matches just a few of the ports needed for sharing: 135 137 139 445 etc. (both TCP and UDP are available), so P1 shared data to R2 The required port for sharing is closed and cannot be uploaded to the P2.

After testing, only 139 can be opened, but do not know whether there will be problems, to be further testing.

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