doc:appunti:hardware:gl_ar750
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doc:appunti:hardware:gl_ar750 [2021/05/10 09:19] – [Configuring the switch from the command line] niccolo | doc:appunti:hardware:gl_ar750 [2023/09/11 09:37] (current) – niccolo | ||
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====== GL-iNet GL-AR750 Travel AC Router ====== | ====== GL-iNet GL-AR750 Travel AC Router ====== | ||
+ | |||
+ | {{gl-inet-gl-ar750.jpg? | ||
+ | |||
=== Default IP address and password === | === Default IP address and password === | ||
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===== VLAN limitations ===== | ===== VLAN limitations ===== | ||
- | VLAN ID number | + | There is a limit to **16 VLANs**, numbered from #0 to #15. Default configuration uses **VLAN #1** for **eth1.1** which is connected to bridge **br-lan**. This limitation is not visible from the LuCI web interface: any number greater than 15 will be silently accepted, but it will be not functional. |
+ | |||
+ | You can view the actual switch configuration using: | ||
+ | |||
+ | < | ||
+ | swconfig dev switch0 show | ||
+ | </ | ||
+ | |||
+ | You can check the limit issuing the following command (notice the error message): | ||
+ | |||
+ | < | ||
+ | swconfig dev switch0 vlan 16 set vid 16 | ||
+ | Failed | ||
+ | </ | ||
You cannot mix tagged and untagged VLAN on the same switch port. | You cannot mix tagged and untagged VLAN on the same switch port. | ||
+ | |||
+ | * Only one port is allowed to carry untagged traffic for a specific VLAN. | ||
+ | * You cannot mix tagged and untagged VLAN on the same port. E.g. if a port carries untagged VLAN#10, the same port cannot carries tagged VLAN#11 (depending upon the order of the commands, the settings will be changed to carry buth as tagged). | ||
+ | |||
+ | Limitation example #1: the **untagged VLAN#10** is **removed** from port **#1** and **#2**: | ||
+ | |||
+ | < | ||
+ | swconfig dev switch0 vlan 10 set ports "0t 1 2" | ||
+ | swconfig dev switch0 vlan 11 set ports "0t 1 2" | ||
+ | swconfig dev switch0 show | ||
+ | ... | ||
+ | VLAN 10: | ||
+ | vid: 10 | ||
+ | ports: 0t | ||
+ | VLAN 11: | ||
+ | vid: 11 | ||
+ | ports: 0t 1 2 | ||
+ | </ | ||
+ | |||
+ | Limitation example #2: the **untagged VLAN#10** is **changed to tagged** on **port #1** and it is removed from port **#2**: | ||
+ | |||
+ | < | ||
+ | swconfig dev switch0 vlan 10 set ports "0t 1 2" | ||
+ | swconfig dev switch0 vlan 11 set ports "0t 1t 2" | ||
+ | VLAN 10: | ||
+ | vid: 10 | ||
+ | ports: 0t 1t | ||
+ | VLAN 11: | ||
+ | vid: 11 | ||
+ | ports: 0t 1t 2 | ||
+ | </ | ||
+ | |||
+ | ===== Configuring a DMZ ===== | ||
+ | |||
+ | We used VLAN to configure a DMZ ... FIXME | ||
+ | |||
+ | ===== Configuration ===== | ||
+ | |||
+ | === Change SSH Port === | ||
+ | |||
+ | From the LuCI interface: | ||
+ | |||
+ | * System => Administration => SSH Access | ||
+ | * Port: | ||
+ | |||
+ | === Install the tcpdump package === | ||
+ | |||
+ | From the command line: | ||
+ | |||
+ | < | ||
+ | opkg update | ||
+ | # tcpdump-mini requires ??? kb: | ||
+ | opkg install tcpdump-mini | ||
+ | # coreutils-base64 requires 28 kb: | ||
+ | opkg install coreutils-base64 | ||
+ | </ | ||
+ | |||
+ | === Crontabs === | ||
+ | |||
+ | < | ||
+ | crontab -e | ||
+ | / | ||
+ | / | ||
+ | ps | grep crond | ||
+ | </ | ||
===== Web References ===== | ===== Web References ===== |
doc/appunti/hardware/gl_ar750.txt · Last modified: 2023/09/11 09:37 by niccolo