charles提示Denying access from address not on ACL解决方法

移动端设置代理时,charles提示Denying acess frm address not on ACL 
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charles官方解释  
可以在访问控制列表里面设置哪个设备可以连接到charles,添加单个设备的话,直接添加启对应的ip地址即可。允许所有设备可以访问charls,添加0.0.0.0/0(IPv4)或::/0(IPv6)到IP Range。 
点击charles的设置 
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选择Access Control Settings,点击Add,输入对应的IP地址,点击OK即可 
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### Cisco ACL Configuration for Allowing or Restricting Telnet Access To manage Telnet access on Cisco devices using Access Control Lists (ACLs), specific configurations must be applied to control which IP addresses can initiate a Telnet session. The configuration process involves creating an extended ACL that specifies the source and destination of traffic, as well as defining VTY lines with appropriate access rules. For configuring context-based access control related to Telnet services, one approach is by setting up an extended ACL that filters incoming packets based on protocol type and port number[^1]. Herein lies how such configurations are typically implemented: #### Creating Extended ACL Rules An example of denying all Telnet connections from a particular subnet while permitting others could look like this: ```cisco access-list 101 deny tcp 192.168.1.0 0.0.0.255 any eq telnet access-list 101 permit tcp any any eq telnet ``` In these commands: - `access-list` defines where the rule will apply. - `deny` blocks matching traffic; conversely, `permit` allows it through. - `tcp` indicates Transport Control Protocol filtering should occur. - Source address (`192.168.1.0`) along with wildcard mask (`0.0.0.255`) specify affected hosts within given range. - Destination specification uses keyword `any`. - Port equality check (`eq telnet`) targets only those TCP segments destined for standard Telnet service ports. After crafting necessary ACL entries, applying them to relevant interfaces ensures enforcement occurs at desired points in network topology: ```cisco interface GigabitEthernet0/0 ip access-group 101 in ``` This command applies previously defined ACL named '101' inward-bound direction across specified interface. Moreover, securing Virtual Terminal (VTY) sessions requires additional steps beyond simple packet-level restrictions imposed via ACLs alone. Configuring login authentication methods alongside transport input settings provides more robust security measures against unauthorized remote administration attempts: ```cisco line vty 0 4 transport input ssh login local ``` These adjustments ensure SSH rather than less secure protocols handles encrypted communication channels between administrators and managed routers or switches.
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