Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 5 pps

designing and implementing linux firewalls and qos using netfilter iproute2 nat and 17 - filter

... getdirentries 51 2/0x200 51 7 ls CALL getdirentries(0x5,0x8 054 000,0x1000,0x8 053 014) 51 7 ls RET getdirentries 0 51 7 ls CALL lseek(0x5,0,0,0,0) 51 7 ls RET lseek 0 51 7 ls CALL close(0x5) 51 7 ls RET ... close 0 51 7 ls CALL fchdir(0x4) 51 7 ls RET fchdir 0 51 7 ls CALL close(0x4) 51 7 ls RET close 0 51 7 ls CALL fstat(0x1,0xbfbfdea0) 51 7 ls RET fstat 0 51 7 ls CALL break(0x8 056 000) 51 7 ls RET ... execve(0xbfbfe790,0xbfbfecdc,0xbfbfece4) 51 7 ktrace NAMI "/bin/ls" 51 7 ktrace NAMI "/libexec/ld-elf.so.1" 51 7 ls RET execve 0. . . 51 7 ls CALL getdirentries(0x5,0x8 054 000,0x1000,0x8 053 014) 51 7 ls RET...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 1 pot

... (UDP)•• Designing and Implementing Linux Firewalls and QoS using netlter, iproute2, NAT, and L7-lterLearn how to secure your system and implement QoS using real-world scenarios for networks ... Conguration 147 QoS Bandwidth Allocation 150 The QoS Script 151 Verifying the QoS Conguration 152 Linux as Router for a Typical Small to Medium Company 154 Setting Up the Router 154 Dening the ... 49TCP Attacks 50 UDP Attacks 51 TCP and UDP Port Scan Attacks 51 Layer 5, 6, and 7 Security Threats 51 BIND Domain Name System (DNS) 52 Apache Web Server 52 Version Control Systems 53 Mail Transport...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 2 pps

... 255 . 255 . 255 .248 8/28 255 . 255 . 255 .240 16/27 255 . 255 . 255 .224 32/26 255 . 255 . 255 .192 64/ 25 255 . 255 . 255 .128 128/24 255 . 255 . 255 .0 256 /23 255 . 255 . 254 .0 51 2/22 255 . 255 . 252 .0 1024Chapter 1[ 39 ]A provider ... 255 . 255 . 255 . 255 /32 is used in CIDR to specify a single host or IP address. If the prex is missing, /32 is assumed/30 255 . 255 . 255 . 252 4/29 255 . 255 . 255 .248 8/28 255 . 255 . 255 .240 16/27 255 . 255 . 255 .224 ... 255 . 255 .240.0 4096/19 255 . 255 .224.0 8192/18 255 . 255 .192.0 16384/17 255 . 255 .128.0 32768/16 255 . 255 .0.0 655 36How the Internet WorksLarge providers are assigned large IP blocks for them and for their...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 4 docx

... 192.168.1.1 and netmask 255 . 255 . 255 .0, is connected to a switch that connects other devices in the 192.168.1.0/24 network.Eth1, with the IP address 1.2.3.1 and netmask 255 . 255 . 255 . 252 , is connected ... segments are described in RFC 1918, and are:10.0.0.0 - 10. 255 . 255 . 255 (10/8 prex)172.16.0.0 - 172.31. 255 . 255 (172.16/12 prex)192.168.0.0 - 192.168. 255 . 255 (192.168/16 prex)Now, since 192.168.1.0/24 ... expensive dedicated QoS machines. Using Linux, you can implement QoS in all the ways any dedicated QoS machine can and even more. Also, one can make a bridge using a good PC running Linux that can...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 5 pps

... thing. Step 1ifconfig eth1:0 192.168.20.1 netmask 255 . 255 . 255 .0Step 2route add –net 192.168.10.0 netmask 255 . 255 . 255 .0 gw 10.10.10.1Layer 7 Filtering[ 126 ]router:/usr/src/l7-protocols-YYYY-MM-DD# ... netmask 255 . 255 . 255 . 252 In a normal situation, we would have a network at the headquarters and another network at the remote location, and we would route them on the vpn1 interface and don't ... at this router, and if we have no rules in the PREROUTING chain, we don't want to forward them on the default route.Step 2route add –net 192.168.20.0 netmask 255 . 255 . 255 .0 gw 10.10.10.2This...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 6 pps

... we assign to Eth1 on our Linux router the IP address 1.1.2.1, netmask 255 . 255 . 255 .192, and congure the web and mail server to have 1.1.2.2, netmask 255 . 255 . 255 .192, and default gateway 1.1.2.1. ... them!^[\xe3\xc5\xe5\xd4].?.?.?.?([\x01\x02\x 05\ x14\x 15\ x16\x18\x19\x1a\x1b\x1c\x20\x21\x32\x33\x34\x 35\ x36\x38\x40\x41\x42\x43\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50\x51\x52\x53\x54\x 55\ x56\x57\x58\x5b\x5c\x60\x81\x82\x90\x91\x93\x96\x97\x98\x99\x9a\x9b\x9c\x9e\xa0\xa1\xa2\xa3\xa4]|\x59 ?[ -~]|\x96 $)# matches everything and too much# ^(\xe3|\xc5|\xd4)# ... 192.168.1.0 netmask 255 . 255 . 255 .0 { range 192.168.1.2 192.168.1.10; option domain-name-servers provider.assigned.me.one; option routers 192.168.1.1; option subnet-mask 255 . 255 . 255 .0; option broadcast-address...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 7 ppt

... 255 . 255 . 255 . 252 network 1.1.1.0 broadcast 1.1.1.3 gateway 1.1.1.2 dns-nameservers 1.1.11.1#eth1 – LAN interfaceauto eth1iface eth1 inet static address 192.168.1.1 netmask 255 . 255 . 255 .0 ... 192.168.2.1 netmask 255 . 255 . 255 .0 network 192.168.2.0 broadcast 192.168.2. 255 #tunnel to HeadQuartersauto hqiface hq inet static address 10.100.100.2 netmask 255 . 255 . 255 . 252 network 10.100.100.0 ... 192.168.1. 255 #tunnel to site Aauto siteaiface sitea inet static address 10.100.100.1 netmask 255 . 255 . 255 . 252 network 10.100.100.0Small Networks Case Studies[ 168 ] Sent 3919849 25 bytes...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 8 pps

... which needs a /30 subnet. I would allocate the IP address 1.2.3.9/30 (netmask 255 . 255 . 255 . 252 ) for the core router and 1.2.3.10/30 for the intranet server. The technical department needs public ... public IP addresses, and we don't need to NAT them; so I bring up on the core router an alias to eth3 (eth3:1) with the IP address 192.168.100.1 netmask 255 . 255 . 255 .0, and set up all those ... server. The core router would have an interface (eth1) with the IP address 1.2.3.6 and netmask 255 . 255 . 255 .248 connected to the server farm switch.The intranet server has a separate interface...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 9 pptx

... 1:100 sfq quantum 151 4b perturb 15 tc filter add dev eth0 protocol ip parent 1:0 prio 5 u32 match ip src 1.2.3.130 flowid 1:100tc filter add dev eth0 protocol ip parent 1:0 prio 5 u32 match ip ... 1:100 sfq quantum 151 4b perturb 15 tc filter add dev eth3 protocol ip parent 1:0 prio 5 u32 match ip dst 1.2.3.130 flowid 1:100tc filter add dev eth3 protocol ip parent 1:0 prio 5 u32 match ip ... parent 1:300 sfq quantum 151 4b perturb 15 tc filter add dev eth0 protocol ip parent 1:0 prio 5 handle 1 fw flowid 1:300For Eth2, we created the class 1:100 of 98Mbps and attached a tc lter to...

Designing and Implementing Linux Firewalls and QoS using netfilter, iproute2, NAT, and filter phần 10 doc

... command 75 ip addr command 75 ip addr del command 75 ip addr ush dynamic command 75 ip link command 75 ip monitor command 75 ip tunnel command 75 network conguration 74rtacct command 75 rtmon ... network, conguration 230Internet access 255 Metropolitan network access 255 national network access 255 network, overview 230 QoS implementation 255 - 257 , 259 security threats 242trafc shaping ... 52 MTA 54 secure Apache server 52 , 53 version control systems 53 ARP 22ARP attacks 45 ARP attacksabout 45 ARP spoong 45 ARP spoong 45 BBerkley Internet Name Domain. See BINDBINDabout 52 drawback...

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