PROC_NET(5) PROC_NET(5) (NAME) /proc/net - (DESCRIPTION) /proc/net netstat ip . /proc/pid/net/ ( 2.6.25) /proc/net . /proc/net/ . (ASCII) cat(1) . netstat(8) ip(8) . (network namespaces) ( network_namespaces(7)). 2.6.25 /proc/net (symlink) /proc/self/net . . /proc/net/arp ARP . ARP . : IP address HW type Flags HW address Mask Device 192.168.0.50 0x1 0x2 00:50:BF:25:68:F3 * eth0 192.168.0.250 0x1 0xc 00:00:00:00:00:00 * eth0 "IP address" IPv4 "HW type" RFC 826 . ARP ( /usr/include/linux/if_arp.h) "HW address" ( MAC) IP . /proc/net/dev . (drop) (fifo) (collisions) . ifconfig(8) ip(8) . : Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed lo: 2776770 11307 0 0 0 0 0 0 2776770 11307 0 0 0 0 0 0 eth0: 1215645 2751 0 0 0 0 0 0 1782404 4324 0 0 0 427 0 0 ppp0: 1622270 5552 1 0 0 0 0 0 354130 5669 0 0 0 0 0 0 tap0: 7714 81 0 0 0 0 0 0 7714 81 0 0 0 0 0 0 /proc/net/dev_mcast (multicast) . /usr/src/linux/net/core/dev_mcast.c: indx interface_name dmi_u dmi_g dmi_address 2 eth0 1 0 01005e000001 3 eth1 1 0 01005e000001 4 eth2 1 0 01005e000001 /proc/net/igmp (Internet Group Management Protocol). . /usr/src/linux/net/core/igmp.c. /proc/net/ip_tables_names iptables(8) ( filter, nat, mangle, raw security). . /proc/net/netstat netstat(8) nstat(8) . TcpExt ( SYN ACK ) IpExt ( IP) MPTcpExt ( TCP) . /proc/net/rarp arp rarp(8) . RARP . /proc/net/raw (RAW) . . "sl" "local_address" . "St" . "tx_queue" "rx_queue" . "tr" "tm->when" "rexmits" . "uid" (UID) . /proc/net/route IPv4 ( route(8) ip route ). : Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT enp3s0 00000000 011DEA54 0003 0 0 100 00000000 0 0 0 Iface Destination Gateway Flags ( Gateway) Metric Mask . /proc/net/snmp (MIB) IP ICMP TCP UDP (SNMP) . /proc/net/tcp TCP . "sl" "local_address" () "rem_address" ( ) . "St" ( 01 ESTABLISHED 0A LISTEN). "tx_queue" "rx_queue" . "tr" "tm->when" "rexmits" . "uid" . /proc/net/udp UDP . UDP . : sl local_address rem_address st tx_queue rx_queue tr rexmits tm->when uid 1: 01642C89:0201 0C642C89:03FF 01 00000000:00000001 01:000071BA 00000000 0 1: 00000000:0801 00000000:0000 0A 00000000:00000000 00:00000000 6F000100 0 1: 00000000:0201 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 "tr" "tm->when" "rexmits" UDP . /proc/net/unix (UNIX domain sockets) . : Num RefCount Protocol Flags Type St Inode Path 0: 00000002 00000000 00000000 0001 03 42 1: 00000001 00000000 00010000 0001 01 1948 /dev/printer : Num: . RefCount: . Protocol: 0 . Flags: . Type: SOCK_STREAM 0001 SOCK_DGRAM 0002 SOCK_SEQPACKET 0005 . St: . Inode: (inode) . Path: ( ). (abstract namespace) <<@>> . /proc/net/netfilter/nfnetlink_queue netfilter . . . 1 4207 0 2 65535 0 0 0 1 (1) (2) (3)(4) (5) (6) (7) (8) : (1) (Queue ID). --queue-num --queue-balance NFQUEUE iptables(8) . iptables-extensions(8) . (2) netlink . (3) . (4) 1 ( ) 2 ( ). (5) . (6) (queue dropped). accept drop . (7) (queue user dropped). netlink . . (8) (Sequence number). ( ) . . 1 . (SEE ALSO) cat(1), proc(5), network_namespaces(7), ifconfig(8), ip(8), iptables(8), netstat(8), route(8) man-pages PROC_NET(5)